nixops: remove juno

update sb backup key
Revert "Break cycle dependency of tunnel netdev services on network setup"
2024-11-27 18:52:28 +08:00 · 2024-11-26 21:46:47 +08:00 · 2024-11-25 12:11:36 +08:00 · 2024-11-22 15:34:23 +08:00 · 2024-11-16 18:49:26 +08:00 · 2024-11-06 15:25:21 +08:00
60 changed files with 12159 additions and 1027 deletions
--- a/backupdl-module.nix
+++ b/backupdl-module.nix
@ -0,0 +1,56 @@
+{ config, pkgs, lib, ... }:
+with lib;
+let
+  makeBackup = pkgs.writeScript "make-backupdl" ''
+    #!${pkgs.bash}/bin/bash
+
+    set -e
+
+    export PATH=${pkgs.rsync}/bin:${pkgs.openssh}/bin
+
+    FILENAME=backup-`${pkgs.coreutils}/bin/date +%F`.tar.bz2.gpg
+
+    ssh nixbld.m-labs.hk mlabs-backup > /hdd/backupdl/backupdl/$FILENAME
+    rsync -az nixbld.m-labs.hk:/var/lib/nextcloud/data /hdd/backupdl/nextcloud
+  '';
+
+  cfg = config.services.backupdl;
+in
+{
+  options.services.backupdl = {
+    enable = mkOption {
+      type = types.bool;
+      default = false;
+      description = "Enable backups";
+    };
+  };
+
+  config = mkIf cfg.enable {
+    systemd.services.backupdl = {
+      description = "Nixbld backups download";
+      serviceConfig = {
+        Type = "oneshot";
+        User = "backupdl";
+        Group = "backupdl";
+        ExecStart = "${makeBackup}";
+      };
+    };
+
+    users.users.backupdl = {
+      name = "backupdl";
+      group = "backupdl";
+      description = "Nixbld backups download";
+      isSystemUser = true;
+      createHome = true;
+      home = "/hdd/backupdl";
+      useDefaultShell = true;
+    };
+    users.extraGroups.backupdl = {};
+
+    systemd.timers.backupdl = {
+      description = "Nixbld backups download";
+      wantedBy = [ "timers.target" ];
+      timerConfig.OnCalendar = "wednesday,sunday *-*-* 08:00:00";
+    };
+  };
+}
--- a/m-labs-intl/60-tunnels.yaml
+++ b/m-labs-intl/60-tunnels.yaml
@ -0,0 +1,18 @@
+network:
+   version: 2
+   renderer: networkd
+   ethernets:
+     eth0:
+       addresses:
+       - 5.78.86.156/32
+       - 2a01:4ff:1f0:83de::2/64
+       - 2a01:4ff:1f0:83de::3/64
+       - 2a01:4ff:1f0:83de::4/64
+   tunnels:
+     gre1:
+       mode: gre
+       local: 5.78.86.156
+       remote: 94.190.212.123
+       addresses:
+        - 10.47.3.0/31
+
--- a/m-labs-intl/gretun.service
+++ b/m-labs-intl/gretun.service
@ -0,0 +1,14 @@
+[Unit]
+Description=GRE tunnel to the main host
+After=network.target
+
+[Service]
+Type=simple
+User=root
+ExecStart=/root/gretun.sh
+ExecStop=/root/gretun_down.sh
+Restart=on-failure
+RemainAfterExit=yes
+
+[Install]
+WantedBy=multi-user.target
--- a/m-labs-intl/gretun.sh
+++ b/m-labs-intl/gretun.sh
@ -0,0 +1,10 @@
+#!/bin/bash
+
+/usr/sbin/iptables -t nat -A PREROUTING -p tcp -i eth0 --dport 25 -j DNAT --to-destination 10.47.3.1:25
+/usr/sbin/iptables -A FORWARD -p tcp -d 10.47.3.1/31 --dport 25 -j ACCEPT
+
+/usr/sbin/iptables -t nat -A PREROUTING -p tcp -i eth0 --dport 587 -j DNAT --to-destination 10.47.3.1:587
+/usr/sbin/iptables -A FORWARD -p tcp -d 10.47.3.1/31 --dport 587 -j ACCEPT
+
+/usr/sbin/iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
+/usr/sbin/iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
--- a/m-labs-intl/gretun_down.sh
+++ b/m-labs-intl/gretun_down.sh
@ -0,0 +1,10 @@
+#!/bin/bash
+
+/usr/sbin/iptables -t nat -D PREROUTING -p tcp -i eth0 --dport 25 -j DNAT --to-destination 10.47.3.1:25
+/usr/sbin/iptables -D FORWARD -p tcp -d 10.47.3.1/31 --dport 25 -j ACCEPT
+
+/usr/sbin/iptables -t nat -D PREROUTING -p tcp -i eth0 --dport 587 -j DNAT --to-destination 10.47.3.1:587
+/usr/sbin/iptables -D FORWARD -p tcp -d 10.47.3.1/31 --dport 587 -j ACCEPT
+
+/usr/sbin/iptables -D FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
+/usr/sbin/iptables -t nat -D POSTROUTING -o eth0 -j MASQUERADE
--- a/m-labs-intl/m-labs-intl.com
+++ b/m-labs-intl/m-labs-intl.com
@ -0,0 +1,81 @@
+upstream rfq_server {
+    server 127.0.0.1:5000;
+}
+
+server {
+    limit_conn addr 5;
+
+    root /var/www/m-labs-intl.com/html;
+    index index.html index.htm index.nginx-debian.html;
+
+    server_name m-labs-intl.com;
+
+    location / {
+        try_files $uri $uri/ =404;
+    }
+
+    listen [::]:443 ssl ipv6only=on; # managed by Certbot
+    listen 443 ssl; # managed by Certbot
+    ssl_certificate /etc/letsencrypt/live/m-labs-intl.com/fullchain.pem; # managed by Certbot
+    ssl_certificate_key /etc/letsencrypt/live/m-labs-intl.com/privkey.pem; # managed by Certbot
+    include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
+    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot
+}
+
+server {
+    server_name www.m-labs-intl.com;
+    return 301 https://m-labs-intl.com$request_uri;
+
+    listen [::]:443 ssl; # managed by Certbot
+    listen 443 ssl; # managed by Certbot
+    ssl_certificate /etc/letsencrypt/live/m-labs-intl.com/fullchain.pem; # managed by Certbot
+    ssl_certificate_key /etc/letsencrypt/live/m-labs-intl.com/privkey.pem; # managed by Certbot
+    include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
+    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot
+}
+
+server {
+    server_name hooks.m-labs-intl.com;
+    limit_conn addr 5;
+
+    location /rfq {
+        proxy_pass http://rfq_server/rfq;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_read_timeout 30;
+        proxy_connect_timeout 30;
+        proxy_send_timeout 30;
+    }
+
+    location / {
+        return 418;
+    }
+
+    listen [::]:443 ssl; # managed by Certbot
+    listen 443 ssl; # managed by Certbot
+    ssl_certificate /etc/letsencrypt/live/m-labs-intl.com/fullchain.pem; # managed by Certbot
+    ssl_certificate_key /etc/letsencrypt/live/m-labs-intl.com/privkey.pem; # managed by Certbot
+    include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
+    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot
+}
+
+server {
+    limit_conn addr 5;
+    if ($host = m-labs-intl.com) {
+        return 301 https://$host$request_uri;
+    } # managed by Certbot
+
+
+    if ($host = www.m-labs-intl.com) {
+        return 301 https://m-labs-intl.com$request_uri;
+    } # managed by Certbot
+
+
+    listen 80;
+    listen [::]:80;
+
+    server_name m-labs-intl.com www.m-labs-intl.com hooks.m-labs-intl.com;
+    return 301 https://$host$request_uri;
+}
--- a/m-labs-intl/m-labs.hk.conf
+++ b/m-labs-intl/m-labs.hk.conf
@ -0,0 +1,34 @@
+
+
+connections {
+  m_labs {
+    version = 2
+    encap = no
+    mobike = no
+    send_certreq = no
+    proposals = aes128gcm128-sha256-prfsha256-curve25519,aes128gcm128-sha256-prfsha256-ecp256
+    local_addrs = 5.78.86.156
+    remote_addrs = 94.190.212.123
+    local {
+      auth = pubkey
+      id = fqdn:m-labs-intl.com
+      pubkeys = m-labs-intl.com
+    }
+    remote {
+      auth = pubkey
+      id = fqdn:m-labs.hk
+      pubkeys = m-labs.hk
+    }
+    children {
+      con1 {
+        mode = transport
+        ah_proposals = sha256-curve25519,sha256-ecp256
+        esp_proposals =
+        local_ts = 5.78.86.156[gre]
+        remote_ts = 94.190.212.123[gre]
+        start_action = start
+        close_action = none
+      }
+    }
+  } 
+}
--- a/m-labs-intl/mail.secret
+++ b/m-labs-intl/mail.secret
--- a/m-labs-intl/nginx.conf
+++ b/m-labs-intl/nginx.conf
@ -0,0 +1,65 @@
+user www-data;
+worker_processes auto;
+pid /run/nginx.pid;
+error_log /var/log/nginx/error.log;
+include /etc/nginx/modules-enabled/*.conf;
+
+events {
+	worker_connections 768;
+	# multi_accept on;
+}
+
+http {
+
+	##
+	# Basic Settings
+	##
+
+	sendfile on;
+	tcp_nopush on;
+	types_hash_max_size 2048;
+	# server_tokens off;
+
+	server_names_hash_bucket_size 64;
+	# server_name_in_redirect off;
+
+	include /etc/nginx/mime.types;
+	default_type application/octet-stream;
+
+	##
+	# SSL Settings
+	##
+
+	ssl_protocols TLSv1 TLSv1.1 TLSv1.2 TLSv1.3; # Dropping SSLv3, ref: POODLE
+	ssl_prefer_server_ciphers on;
+
+	# Rate limiting
+	limit_conn_zone $binary_remote_addr zone=addr:10m;
+
+	##
+	# Logging Settings
+	##
+
+	access_log /var/log/nginx/access.log;
+
+	##
+	# Gzip Settings
+	##
+
+	gzip on;
+
+	# gzip_vary on;
+	# gzip_proxied any;
+	# gzip_comp_level 6;
+	# gzip_buffers 16 8k;
+	# gzip_http_version 1.1;
+	gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
+
+	##
+	# Virtual Host Configs
+	##
+
+	include /etc/nginx/conf.d/*.conf;
+	include /etc/nginx/sites-enabled/*;
+}
+
--- a/m-labs-intl/rfq.service
+++ b/m-labs-intl/rfq.service
@ -0,0 +1,12 @@
+[Unit]
+Description=RFQ service
+After=network.target
+
+[Service]
+Type=simple
+User=rfqserver
+ExecStart=/home/rfqserver/runrfq.sh
+Restart=on-failure
+
+[Install]
+WantedBy=multi-user.target
--- a/m-labs-intl/runrfq.sh
+++ b/m-labs-intl/runrfq.sh
@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+
+export FLASK_DEBUG=0
+export FLASK_MAIL_SERVER=mail.m-labs.hk
+export FLASK_MAIL_PORT=465
+export FLASK_MAIL_USE_SSL=True
+export FLASK_MAIL_USERNAME=sysop-intl@m-labs-intl.com
+export FLASK_MAIL_PASSWORD_FILE=/home/rfqserver/mail.secret
+export FLASK_MAIL_RECIPIENT=sales@m-labs.hk
+export FLASK_MAIL_SENDER=sysop-intl@m-labs-intl.com
+
+cd /home/rfqserver/web2019/server
+source venv/bin/activate
+python3 -m flask --app rfq run --port=5000
--- a/m-labs-intl/setup.md
+++ b/m-labs-intl/setup.md
@ -0,0 +1,99 @@
+# Setup m-labs-intl.com server
+
+```shell
+# Install required packages
+apt install git nginx-full python3 python3.12-venv python3-pip iptables ufw \
+  strongswan strongswan-swanctl strongswan-pki strongswan-libcharon
+snap install --classic certbot
+ln -s /snap/bin/certbot /usr/bin/certbot
+
+# Set up networks (includes GRE)
+cp 60-tunnels.yaml /etc/netplan/
+netplan apply
+
+# set up IPsec-AH connection
+cp m-labs.hk.conf /etc/swanctl/conf.d/
+echo 'net.ipv4.ip_forward=1' >> /etc/sysctl.conf
+sysctl -p
+cp m-labs.hk /etc/swanctl/pubkey/m-labs.hk # get pubkey from nixbld
+pki --gen --type rsa --size 4096 --outform pem > /etc/swanctl/private/m-labs-intl.com
+pki --pub --in /etc/swanctl/private/m-labs-intl.com --outform pem > /etc/swanctl/pubkey/m-labs-intl.com
+cp /etc/swanctl/pubkey/m-labs-intl.com m-labs-intl.com # add it to the nixbld
+systemctl enable strongswan --now
+systemctl restart strongswan
+
+# Set up website
+cp m-labs-intl.com /etc/nginx/sites-available/
+cp nginx.conf /etc/nginx/
+ln -s /etc/nginx/sites-available/m-labs-intl.com /etc/nginx/sites-enabled/
+systemctl enable nginx --now
+service nginx restart
+
+# Issue SSL certificate - website only, the mail is on the HK side
+certbot --nginx
+service nginx restart
+
+# Create a user for automatic website deployment from nixbld
+useradd -m zolaupd
+mkdir -p /var/www/m-labs-intl.com/html
+chown -R zolaupd /var/www/m-labs-intl.com/
+sudo -u zolaupd sh -c '
+  cd /home/zolaupd;
+  mkdir /home/zolaupd/.ssh;
+  echo -n "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIP1OJJM8g/1ffxDjN31XKEfGmrYaW03lwpyTa1UGWqVx
+  ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIF6R6XK0IiuAKxVKvSABm4m9bfOlvfJcMvTpjenuXUPv" > /home/zolaupd/.ssh/authorized_keys
+  chmod 700 .ssh/
+  chmod 600 .ssh/authorized_keys
+  '
+
+# Create a user for RFQ hooks service
+useradd -m rfqserver
+cp runrfq.sh /home/rfqserver/
+cp mail.secret /home/rfqserver/
+chown rfqserver /home/rfqserver/runrfq.sh
+chmod +x /home/rfqserver/runrfq.sh
+chown rfqserver /home/rfqserver/mail.secret
+
+sudo -u rfqserver sh -c '
+  cd /home/rfqserver;
+  git clone https://git.m-labs.hk/M-Labs/web2019.git;
+  cd web2019;
+  python3 -m venv ./venv;
+  source venv/bin/activate;
+  pip install -r requirements.txt;
+'
+cp rfq.service /etc/systemd/system/
+
+# Automate port forwarding rules creation
+cp gretun.sh /root/gretun.sh
+cp gretun_down.sh /root/gretun_down.sh
+chmod u+x /root/gretun.sh
+chmod u+x /root/gretun_down.sh
+cp gretun.service /etc/systemd/system/
+
+# Enable custom services
+systemctl daemon-reload
+systemctl enable rfq.service --now
+systemctl enable gretun.service --now
+
+# Setup basic firewall rules  
+ufw default deny
+ufw default allow outgoing
+
+ufw allow from 94.190.212.123
+ufw allow from 2001:470:f891:1::/64
+ufw allow from 202.77.7.238
+ufw allow from 2001:470:18:390::2
+ufw allow "Nginx HTTP"
+ufw allow "Nginx HTTPS"
+ufw limit OpenSSH
+ufw allow 25/tcp
+ufw allow 587/tcp
+ufw limit 500,4500/udp
+
+ufw route allow in on gre1 out on eth0
+ufw allow from 10.47.3.0/31
+
+ufw show added
+ufw enable
+```
--- a/nixbld-etc-nixos/afws-module.nix
+++ b/nixbld-etc-nixos/afws-module.nix
@ -0,0 +1,66 @@
+{ config, pkgs, lib, ... }:
+with lib;
+let
+  afws = pkgs.callPackage ./afws { inherit pkgs; };
+in
+{
+  options.services.afws = {
+    enable = mkOption {
+      type = types.bool;
+      default = false;
+      description = "Enable AFWS server";
+    };
+    logFile = mkOption {
+      type = types.str;
+      default = "/var/lib/afws/logs/afws.log";
+      description = "Path to the log file";
+    };
+    logBackupCount = mkOption {
+      type = types.int;
+      default = 30;
+      description = "Number of daily log files to keep";
+    };
+  };
+
+  config = mkIf config.services.afws.enable {
+    systemd.services.afws = {
+      description = "AFWS server";
+      wantedBy = [ "multi-user.target" ];
+      preStart = ''
+        mkdir -p "$(dirname ${config.services.afws.logFile})"
+        chown afws:afws "$(dirname ${config.services.afws.logFile})"
+      '';
+      serviceConfig = {
+        User = "afws";
+        Group = "afws";
+        ExecStart = ''
+          ${afws}/bin/afws_server \
+            --log-file ${config.services.afws.logFile} \
+            --log-backup-count ${toString config.services.afws.logBackupCount}
+        '';
+        ExecReload = "${pkgs.coreutils}/bin/kill -USR1 $MAINPID";
+      };
+      path = [ pkgs.nix pkgs.git ];
+    };
+
+    security.acme.certs."afws.m-labs.hk".postRun =
+      ''
+      mkdir -p /var/lib/afws/cert
+      cp cert.pem /var/lib/afws/cert
+      cp key.pem /var/lib/afws/cert
+      chown -R afws:afws /var/lib/afws/cert
+      '';
+    security.acme.certs."afws.m-labs.hk".reloadServices = [ "afws.service" ];
+
+    users.users.afws = {
+      name = "afws";
+      group = "afws";
+      description = "AFWS server user";
+      isSystemUser = true;
+      createHome = false;
+      home = "/var/lib/afws";
+      useDefaultShell = true;
+    };
+    users.extraGroups.afws = {};
+  };
+}
--- a/nixbld-etc-nixos/backup-module.nix
+++ b/nixbld-etc-nixos/backup-module.nix
@ -1,31 +1,37 @@
 { config, pkgs, lib, ... }:
 with lib;
 let
+  excludePaths = [
+    "/var/lib/gitea/repositories/*/*.git/archives"
+    "/var/lib/gitea/data/repo-archive"
+    "/var/lib/gitea/data/indexers"
+    "/var/vmail/m-labs.hk/js"
+    "/var/lib/afws/.cache"
+    "/var/lib/mattermost/data/2019*"
+    "/var/lib/mattermost/data/2020*"
+    "/var/lib/mattermost/data/2021*"
+    "/var/lib/mattermost/data/2022*"
+    "/var/lib/mattermost/data/2023*"
+  ];
  makeBackup = pkgs.writeScript "make-backup" ''
-    #!${pkgs.bash}/bin/bash
+    #!${pkgs.bash}/bin/bash -p

    set -e
    umask 0077

-    FILENAME=backup-`date +%F`.tar.bz2.gpg
-
    DBDUMPDIR=`mktemp -d`
-    pushd $DBDUMPDIR
+    trap "rm -rf $DBDUMPDIR" EXIT
+    cd $DBDUMPDIR

-    ${config.services.mysql.package}/bin/mysqldump --single-transaction flarum > flarum.sql
-    ${pkgs.sudo}/bin/sudo -u mattermost ${config.services.postgresql.package}/bin/pg_dump mattermost > mattermost.sql
-    ${pkgs.sudo}/bin/sudo -u rt ${config.services.postgresql.package}/bin/pg_dump rt5 > rt.sql
+    ${config.services.mysql.package}/bin/mysqldump --user=root --single-transaction flarum > flarum.sql
+    ${config.services.postgresql.package}/bin/pg_dump mattermost > mattermost.sql
+    ${config.services.postgresql.package}/bin/pg_dump rt5 > rt.sql
+    ${config.services.postgresql.package}/bin/pg_dump gitea > gitea.sql

-    ${pkgs.gnutar}/bin/tar cf - --exclude "/var/lib/gitea/repositories/*/*.git/archives" --exclude "/var/lib/gitea/data/repo-archive" /etc/nixos /var/lib/gitea /var/lib/mattermost/data flarum.sql mattermost.sql rt.sql | \
+    exec 6< /etc/nixos/secret/backup-passphrase
+    ${pkgs.gnutar}/bin/tar cf - ${lib.concatMapStringsSep " " (p: "--exclude \"${p}\"") excludePaths} /etc/nixos /var/vmail /var/lib/hedgedoc /var/lib/gitea /var/lib/afws /var/lib/mattermost/data /var/www/193thz flarum.sql mattermost.sql rt.sql gitea.sql | \
        ${pkgs.bzip2}/bin/bzip2 | \
-        ${pkgs.gnupg}/bin/gpg --symmetric --batch --passphrase-file /etc/nixos/secret/backup-passphrase > /home/backupdl/$FILENAME
-
-    popd
-    rm -rf $DBDUMPDIR
-
-    chown backupdl.users /home/backupdl/$FILENAME
-
-    echo Backup done
+        ${pkgs.gnupg}/bin/gpg --symmetric --batch --passphrase-fd 6
  '';
  cfg = config.services.mlabs-backup;
 in
@ -39,20 +45,20 @@ in
  };

  config = mkIf cfg.enable {
-    systemd.services.mlabs-backup = {
-      description = "M-Labs backup";
-      serviceConfig = {
-        Type = "oneshot";
-        User = "root";
-        Group = "root";
-        ExecStart = "${makeBackup}";
-      };
+    users.extraGroups.backupdl = { };
+    users.extraUsers.backupdl = {
+      isNormalUser = true;
+      extraGroups = ["backupdl" "nextcloud"];
+      openssh.authorizedKeys.keys = [
+        "ssh-rsa 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 backupdl@minipc"
+      ];
    };
-
-    systemd.timers.mlabs-backup = {
-      description = "M-Labs backup";
-      wantedBy = [ "timers.target" ];
-      timerConfig.OnCalendar = "tuesday,friday";
+    security.wrappers.mlabs-backup = {
+      source = makeBackup;
+      setuid = true;
+      owner = "root";
+      group = "backupdl";
+      permissions = "g+x";
    };
  };
 }
--- a/nixbld-etc-nixos/configuration.nix
+++ b/nixbld-etc-nixos/configuration.nix
--- a/nixbld-etc-nixos/flarum/composer.lock
+++ b/nixbld-etc-nixos/flarum/composer.lock
--- a/nixbld-etc-nixos/flarum/default.nix
+++ b/nixbld-etc-nixos/flarum/default.nix
@ -0,0 +1,39 @@
+{
+  lib,
+  php,
+  fetchFromGitHub,
+  fetchpatch,
+}:
+
+php.buildComposerProject (finalAttrs: {
+  pname = "flarum";
+  version = "1.8.1";
+
+  src = fetchFromGitHub {
+    owner = "flarum";
+    repo = "flarum";
+    rev = "v${finalAttrs.version}";
+    hash = "sha256-kigUZpiHTM24XSz33VQYdeulG1YI5s/M02V7xue72VM=";
+  };
+
+  patches = [
+    # Add useful extensions from https://github.com/FriendsOfFlarum
+    # Extensions included: fof/upload, fof/polls, fof/subscribed
+    ./fof-extensions.patch
+  ];
+
+  composerLock = ./composer.lock;
+  composerStrictValidation = false;
+  vendorHash = "sha256-z3KVGmILw8MZ4aaSf6IP/0l16LI/Y2yMzY2KMHf4qSg=";
+
+  meta = with lib; {
+    changelog = "https://github.com/flarum/framework/blob/main/CHANGELOG.md";
+    description = "Flarum is a delightfully simple discussion platform for your website";
+    homepage = "https://github.com/flarum/flarum";
+    license = lib.licenses.mit;
+    maintainers = with maintainers; [
+      fsagbuya
+      jasonodoom
+    ];
+  };
+})
--- a/nixbld-etc-nixos/flarum/fof-extensions.patch
+++ b/nixbld-etc-nixos/flarum/fof-extensions.patch
@ -0,0 +1,16 @@
+diff --git a/composer.json b/composer.json
+index c63b5f8..5ad1186 100644
+--- a/composer.json
+++ b/composer.json
+@@ -37,7 +37,10 @@
+         "flarum/sticky": "*",
+         "flarum/subscriptions": "*",
+         "flarum/suspend": "*",
+-        "flarum/tags": "*"
+        "flarum/tags": "*",
+        "fof/polls": "*",
+        "fof/subscribed": "*",
+        "fof/upload": "*"
+     },
+     "config": {
+         "preferred-install": "dist",
--- a/nixbld-etc-nixos/hydra-hack-allowed-uris.patch
+++ b/nixbld-etc-nixos/hydra-hack-allowed-uris.patch
@ -1,13 +0,0 @@
-diff --git a/src/hydra-eval-jobs/hydra-eval-jobs.cc b/src/hydra-eval-jobs/hydra-eval-jobs.cc
-index 934bf42e..48f2d248 100644
--- a/src/hydra-eval-jobs/hydra-eval-jobs.cc
-+++ b/src/hydra-eval-jobs/hydra-eval-jobs.cc
-@@ -281,6 +281,8 @@ int main(int argc, char * * argv)
-            to the environment. */
-         evalSettings.restrictEval = true;
- 
-+        evalSettings.allowedUris = {"https://github.com/m-labs/misoc.git"};
-+
-         /* When building a flake, use pure evaluation (no access to
-            'getEnv', 'currentSystem' etc. */
-         evalSettings.pureEval = myArgs.flake;
--- a/nixbld-etc-nixos/hydra-msys2.patch
+++ b/nixbld-etc-nixos/hydra-msys2.patch
@ -0,0 +1,122 @@
+diff --git a/src/root/product-list.tt b/src/root/product-list.tt
+index 4d545b3e..6049c2a6 100644
+--- a/src/root/product-list.tt
+++ b/src/root/product-list.tt
+@@ -162,6 +162,11 @@
+             <img src="[% c.uri_for("/static/images/iso.png") %]" alt="ISO" />
+           </td>
+           <td>ISO-9660 CD/DVD image</td>
+        [% CASE "msys2" %]
+          <td>
+            <img src="[% c.uri_for("/static/images/msys2.svg") %]" alt="MSYS2" width="32" height="32" />
+          </td>
+          <td>MSYS2 package</td>
+         [% CASE "binary-dist" %]
+           <td>
+             <img src="[% c.uri_for("/static/images/binary-dist.png") %]" alt="Binary distribution" />
+diff --git a/src/root/static/images/msys2.svg b/src/root/static/images/msys2.svg
+new file mode 100644
+index 00000000..46baff50
+--- /dev/null
+++ b/src/root/static/images/msys2.svg
+@@ -0,0 +1,100 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   width="36.777081mm"
+   height="36.777081mm"
+   viewBox="0 0 36.77708 36.777081"
+   version="1.1"
+   id="svg8"
+   inkscape:version="1.1.1 (3bf5ae0d25, 2021-09-20)"
+   sodipodi:docname="msys2_logo.svg"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:dc="http://purl.org/dc/elements/1.1/">
+  <defs
+     id="defs2" />
+  <sodipodi:namedview
+     id="base"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageopacity="0.0"
+     inkscape:pageshadow="2"
+     inkscape:zoom="3.959798"
+     inkscape:cx="121.34457"
+     inkscape:cy="27.274119"
+     inkscape:document-units="mm"
+     inkscape:current-layer="layer1"
+     showgrid="false"
+     fit-margin-top="0"
+     fit-margin-left="0"
+     fit-margin-right="0"
+     fit-margin-bottom="0"
+     inkscape:window-width="2560"
+     inkscape:window-height="1371"
+     inkscape:window-x="0"
+     inkscape:window-y="32"
+     inkscape:window-maximized="1"
+     inkscape:pagecheckerboard="true" />
+  <metadata
+     id="metadata5">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     inkscape:label="Layer 1"
+     inkscape:groupmode="layer"
+     id="layer1"
+     transform="translate(-122.70998,-169.48973)">
+    <rect
+       style="fill:#894c84;fill-opacity:1;stroke-width:0"
+       id="rect946"
+       width="36.777081"
+       height="36.777081"
+       x="122.70998"
+       y="169.48973" />
+    <path
+       style="fill:#d35e64;fill-opacity:1;stroke-width:0.133635"
+       d="m 142.72948,201.89184 c -0.32408,-0.25492 -0.35455,-0.35395 -0.3187,-1.03567 l 0.0396,-0.75379 h 0.45908 c 0.44506,0 0.45934,0.0163 0.46772,0.53453 l 0.009,0.53454 0.70308,0.0405 c 0.53885,0.031 0.7217,-0.008 0.78281,-0.16735 0.15971,-0.41619 -0.10726,-0.89779 -0.98636,-1.77935 -0.49365,-0.49504 -1.03351,-1.07713 -1.19967,-1.29353 -0.38599,-0.50269 -0.40844,-1.38334 -0.0467,-1.83013 0.23417,-0.28918 0.35554,-0.31548 1.45595,-0.31548 1.36938,0 1.67817,0.15986 1.80376,0.93383 0.11523,0.71006 -0.0673,1.20433 -0.44479,1.20433 -0.26632,0 -0.34178,-0.0979 -0.46372,-0.60136 -0.13305,-0.54937 -0.1843,-0.60509 -0.59283,-0.64461 -0.24596,-0.0238 -0.58921,-0.008 -0.76279,0.036 -0.59536,0.14942 -0.37642,0.57816 0.95393,1.86806 l 1.26953,1.23092 v 0.90178 c 0,1.37811 -0.0436,1.41874 -1.52348,1.41874 -1.06598,0 -1.29877,-0.0409 -1.60514,-0.28187 z"
+       id="path3828"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:#d35e64;fill-opacity:1;stroke-width:0.133635"
+       d="m 148.05027,204.08841 c 0.0471,-0.28134 0.11947,-1.05275 0.16076,-1.71424 0.0703,-1.12643 0.0353,-1.35529 -0.55133,-3.60814 -0.34453,-1.32299 -0.6573,-2.54073 -0.69504,-2.70611 -0.0594,-0.26014 -0.0147,-0.30067 0.33149,-0.30067 0.22006,0 0.46737,0.081 0.54957,0.18007 0.0822,0.099 0.30254,0.86578 0.48964,1.70385 0.41743,1.86975 0.45345,1.99148 0.58914,1.99148 0.15912,0 0.35622,-0.563 0.74822,-2.13717 0.38958,-1.56447 0.48518,-1.73823 0.9564,-1.73823 0.39274,0 0.46132,-0.43504 -0.70121,4.4477 -0.46869,1.96849 -0.93011,3.74249 -1.02539,3.94223 -0.11781,0.24694 -0.29559,0.37716 -0.55559,0.40696 -0.37406,0.0429 -0.38048,0.0327 -0.29666,-0.46773 z"
+       id="path3830"
+       inkscape:connector-curvature="0" />
+    <path
+       style="fill:#d35e64;fill-opacity:1;stroke-width:0.133635"
+       d="m 155.37958,199.87478 -0.001,1.04324 c 0,0 0.0415,0.99571 -0.10812,1.13694 -0.15218,0.14363 -0.72994,0.11875 -1.5324,0.11875 -1.39413,0 -1.4684,-0.0143 -1.66996,-0.32193 -0.14282,-0.21797 -0.19775,-0.55241 -0.17012,-1.03567 0.0397,-0.69411 0.0518,-0.71373 0.43989,-0.71373 0.2965,0 0.40947,0.0687 0.43951,0.26726 0.13121,0.86712 0.13264,0.86863 0.81803,0.86863 1.33065,0 1.18669,-0.7429 -0.41998,-2.16732 -0.98712,-0.87515 -1.3045,-1.34704 -1.30163,-1.93531 0.005,-1.02426 0.44219,-1.37639 1.70885,-1.37639 1.4449,0 1.89746,0.36739 1.89746,1.54037 0,0.85 -0.80733,1.01376 -0.94108,0.1909 -0.113,-0.69515 -0.21979,-0.79583 -0.84414,-0.79583 -0.59087,0 -0.88668,0.17572 -0.88861,0.52786 -5.3e-4,0.11392 0.5857,0.76291 1.30294,1.44221"
+       id="path3832"
+       inkscape:connector-curvature="0"
+       sodipodi:nodetypes="ccssccscsccsssscc" />
+    <path
+       inkscape:connector-curvature="0"
+       id="path3826"
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+       style="fill:#f9f9f9;stroke-width:0.133635" />
+    <g
+       id="g957"
+       transform="translate(36.843901,36.777081)"
+       style="fill:#999999">
+      <path
+         style="fill:#999999;fill-opacity:1;stroke-width:0.264583"
+         d="m 118.48002,154.38963 c -0.21263,-0.77937 -0.60053,-0.53763 -3.77862,-0.53763 -4.23812,0 -4.51001,0.21718 -2.65413,-2.44723 2.45703,-3.52744 3.4906,-5.92399 2.80851,-6.96499 -0.4719,-0.72022 -1.01247,-0.62449 -1.92709,0.34127 -0.84859,0.89603 -1.86894,0.41779 -1.86894,-0.95587 0,-2.01205 2.80561,-3.99992 5.38938,-3.9922 1.61399,0.005 2.43642,0.4039 3.21581,1.56044 1.12027,1.66236 0.73145,3.8557 -1.134,6.39695 -1.54383,2.10311 -0.73385,3.61259 0.95572,1.78109 1.46292,-1.68793 1.55952,0.86073 1.49098,1.70283 -0.2309,2.69619 -2.07701,4.65709 -2.49762,3.11534 z"
+         id="path961"
+         inkscape:connector-curvature="0"
+         sodipodi:nodetypes="sscccscccccs" />
+    </g>
+  </g>
+</svg>
--- a/nixbld-etc-nixos/named/193thz.com
+++ b/nixbld-etc-nixos/named/193thz.com
@ -0,0 +1,29 @@
+$TTL 7200
+
+@						SOA	ns.193thz.com. sb.m-labs.hk. (
+							2024060201
+							7200
+							3600
+							86400
+							600)
+
+
+						NS		ns.193thz.com.
+						NS		ns1.he.net.
+
+						A		94.190.212.123
+						A		202.77.7.238
+						AAAA	2001:470:18:390::2
+						MX		10 mail.m-labs.hk.
+						TXT		"v=spf1 mx a:router.alt.m-labs.hk -all"
+						TXT		"google-site-verification=5eIjLyhM_siRg5Fc2Z3AMSbheH0JFOn5iR3TCEXakqU"
+						CAA		0 issue "letsencrypt.org; accounturi=https://acme-v02.api.letsencrypt.org/acme/acct/1758987512"
+
+
+ns						A		94.190.212.123
+ns						AAAA	2001:470:18:390::2
+
+mail._domainkey			TXT	"v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC9T0cONxGXeyETE0bJ6NJVGT58fVFrfb+WxQhMskCN/mJhODyDTkRCjzE8ZnKhZGjkFZNG+PoSZlW+kpSS1LvMwzQpMRaH4zAzIexffR0l7rJR1MuQiVMsfGWpO2SLEuN74L2qH8SUBHZjrRpeSaFxwQm+prIOzZe5wTZStt/6qQIDAQAB"
+_dmarc					TXT	"v=DMARC1; p=none"
+
+www						CNAME	@
--- a/nixbld-etc-nixos/named/200-29.98.206.103.in-addr.arpa
+++ b/nixbld-etc-nixos/named/200-29.98.206.103.in-addr.arpa
@ -0,0 +1,20 @@
+$TTL 7200
+
+@						SOA	NS.XN--WBTZ5WPQAJ35CFXC.XN--J6W193G. sb.m-labs.hk. (
+							2024060201
+							7200
+							3600
+							86400
+							600)
+
+
+						NS		NS.XN--WBTZ5WPQAJ35CFXC.XN--J6W193G.
+						NS		ns1.he.net.
+						CAA		0 issue "letsencrypt.org; accounturi=https://acme-v02.api.letsencrypt.org/acme/acct/1758987512"
+
+200	PTR	router.alt.m-labs.hk.
+201	PTR	stewardship1.alt.m-labs.hk.
+202	PTR	stewardship2.alt.m-labs.hk.
+203	PTR	atse.alt.m-labs.hk.
+204	PTR	nasty-gareth.alt.m-labs.hk.
+205	PTR	zynq.alt.m-labs.hk.
--- a/nixbld-etc-nixos/named/m-labs-intl.com
+++ b/nixbld-etc-nixos/named/m-labs-intl.com
@ -0,0 +1,30 @@
+$TTL 7200
+
+@						SOA	ns.m-labs-intl.com. sb.m-labs.hk. (
+							2024101401
+							7200
+							3600
+							86400
+							600)
+
+
+						NS		ns.m-labs-intl.com.
+						NS		ns1.he.net.
+						NS		ns1.qnetp.net.
+
+						A		5.78.86.156
+						AAAA	2a01:4ff:1f0:83de::1
+						MX		10 mail.m-labs-intl.com.
+						TXT		"v=spf1 mx -all"
+						TXT		"google-site-verification=BlQd5_5wWW7calKC7bZA0GdoxR8-zj4gwJEg9sGJ3l8"
+						CAA		0 issue "letsencrypt.org; accounturi=https://acme-v02.api.letsencrypt.org/acme/acct/1768317117"
+
+ns						A		94.190.212.123
+ns						AAAA	2001:470:18:390::2
+
+mail					A		5.78.86.156
+mail._domainkey			IN	TXT	"v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDJVPuhSGXghO7ib8Em/Se3jfCCIJK5g4zn5pGZ3/e0I0f+zGHMuvwpjkAKf6eSmo/AAXEaco28pDi3qE5xfV512AJsORCfPoPFyNhLsj/qtri6hc5KVSWW0Ja3MSFBINDCaX78c7PXPY+3jJJGpwSBDLjdxj9AQwtfiCVlH4qE/QIDAQAB"
+_dmarc					TXT		"v=DMARC1; p=none"
+
+www						CNAME	@
+hooks					CNAME	@
--- a/nixbld-etc-nixos/named/m-labs.hk
+++ b/nixbld-etc-nixos/named/m-labs.hk
@ -0,0 +1,53 @@
+$TTL 7200
+
+@						SOA	NS.XN--WBTZ5WPQAJ35CFXC.XN--J6W193G. sb.m-labs.hk. (
+							2024080501
+							7200
+							3600
+							86400
+							600)
+
+
+						NS		NS.XN--WBTZ5WPQAJ35CFXC.XN--J6W193G.
+						NS		ns1.qnetp.net.
+						NS		ns1.he.net.
+
+						A		94.190.212.123
+						A		202.77.7.238
+						AAAA	2001:470:18:390::2
+						MX		10 mail.m-labs.hk.
+						TXT		"v=spf1 mx a:router.alt.m-labs.hk -all"
+						TXT		"google-site-verification=Tf_TEGZLG7-2BE70hMjLnzjDZ1qUeUZ6vxzbl1sagT8"
+						CAA		0 issue "letsencrypt.org; accounturi=https://acme-v02.api.letsencrypt.org/acme/acct/1758987512"
+
+
+mail					A		94.190.212.123
+mail					A		202.77.7.238
+mail					AAAA	2001:470:18:390::2
+mail._domainkey			TXT		"v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCl38A/Z0IInVU157qzrWgMfYm2iDHoWZsTyiiOoZdT7kHMzS/M2OMXMt7r5g1/7pCPClsGUDJvKGqVMmjJuPleMyKHwpGeT92qDNEFpt6ahneap/oYx5eBYM/vGcgmleNxyIoBHsptaZvqD4vCEFaC22f8UL5QAgQD3wCH3FwlpQIDAQAB"
+_dmarc					TXT		"v=DMARC1; p=none"
+
+lab						CNAME	@
+www						CNAME	@
+nixbld					CNAME	@
+msys2					CNAME	@
+conda					CNAME	@
+afws					CNAME	@
+git						CNAME	@
+chat					CNAME	@
+hooks					CNAME	@
+forum					CNAME	@
+perso					CNAME	@
+rt						CNAME	@
+files					CNAME	@
+docs					CNAME	@
+
+rpi-1					AAAA	2001:470:f891:1:dea6:32ff:fe8a:6a93
+rpi-4					AAAA	2001:470:f891:1:dea6:32ff:fe14:fce9
+
+router.alt				A		103.206.98.200
+stewardship1.alt		A		103.206.98.201
+stewardship2.alt		A		103.206.98.202
+atse.alt				A		103.206.98.203
+nasty-gareth.alt		A		103.206.98.204
+zynq.alt				A		103.206.98.205
--- a/nixbld-etc-nixos/named/m-labs.ph
+++ b/nixbld-etc-nixos/named/m-labs.ph
@ -0,0 +1,28 @@
+$TTL 7200
+
+@						SOA	ns1.m-labs.ph. sb.m-labs.hk. (
+							2024060201
+							7200
+							3600
+							86400
+							600)
+
+
+						NS		ns1.m-labs.ph.
+						NS		ns1.he.net.
+
+						A		94.190.212.123
+						A		202.77.7.238
+						AAAA	2001:470:18:390::2
+						MX		10 mail.m-labs.hk.
+						TXT		"v=spf1 mx a:router.alt.m-labs.hk -all"
+						TXT		"google-site-verification=g2k8M1fhbYOPs4C37SeGCfNlD6paWcexamji1DXrp0o"
+						CAA		0 issue "letsencrypt.org; accounturi=https://acme-v02.api.letsencrypt.org/acme/acct/1758987512"
+
+ns1						A		94.190.212.123
+ns1						AAAA	2001:470:18:390::2
+
+mail._domainkey			TXT		"v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDPUlkoA4Gucsin6P5LSohSOpPbpOELkbKDz9MmB4Zzj4QdcQNtMzU3Uis8WZwVXknQ/6URoDdTa4aR8+PwMi5fjKpLM8ZAnnHJHYebZPDRq6lQo3VGdaCu9NhdjYwFhvK9VRyhwI9i7DUptdLsu/OzbgTlCdWQTOr+MFEkYwmxLQIDAQAB"
+_dmarc					TXT		"v=DMARC1; p=none"
+
+www						CNAME	@
--- a/nixbld-etc-nixos/named/malloctech.fr
+++ b/nixbld-etc-nixos/named/malloctech.fr
@ -0,0 +1,23 @@
+$TTL 7200
+
+@						SOA	ns.malloctech.fr. sb.m-labs.hk. (
+							2024060201
+							7200
+							3600
+							86400
+							600)
+
+
+						NS		ns.malloctech.fr.
+						NS		ns1.he.net.
+
+						MX		10 mail.m-labs.hk.
+						TXT		"v=spf1 mx a:router.alt.m-labs.hk -all"
+						TXT		"google-site-verification=LALF-fafTnmkL-18m3CzwFjSwEV1C7NeKexiNfMYsOw"
+						CAA		0 issue "letsencrypt.org; accounturi=https://acme-v02.api.letsencrypt.org/acme/acct/1758987512"
+
+ns						A		94.190.212.123
+ns						AAAA	2001:470:18:390::2
+
+mail._domainkey			TXT	"v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC+Op2B9cdVxwyweChOBJtk4LGkLUfxunI3a7sSL0aVnntfPWkKgY7zTL8iOJaqdt/DkkvOz++HEsn3AzleXsdibaTC9x6kgrMVgkrsYOKA4bWDLJiUfgq7vvRMdkw6rOqlJp9+faXKIKwtMG9Ckd1+rHBsaFwe7EE0coLbhGZaQQIDAQAB"
+_dmarc					TXT	"v=DMARC1; p=none"
--- a/nixbld-etc-nixos/nix-3-networked-derivations.patch
+++ b/nixbld-etc-nixos/nix-3-networked-derivations.patch
@ -1,82 +0,0 @@
-diff -Naur /nix/store/32wd1lrf55ymaz1aysrqffpxfgkwl6m4-source/src/libstore/build/local-derivation-goal.cc nix3/src/libstore/build/local-derivation-goal.cc
--- /nix/store/32wd1lrf55ymaz1aysrqffpxfgkwl6m4-source/src/libstore/build/local-derivation-goal.cc	1970-01-01 08:00:01.000000000 +0800
-+++ nix3/src/libstore/build/local-derivation-goal.cc	2021-04-24 16:29:52.493166702 +0800
-@@ -395,6 +395,8 @@
-     additionalSandboxProfile = parsedDrv->getStringAttr("__sandboxProfile").value_or("");
- #endif
- 
-+    networked = parsedDrv->getBoolAttr("__networked");
-+
-     /* Are we doing a chroot build? */
-     {
-         auto noChroot = parsedDrv->getBoolAttr("__noChroot");
-@@ -412,7 +414,7 @@
-         else if (settings.sandboxMode == smDisabled)
-             useChroot = false;
-         else if (settings.sandboxMode == smRelaxed)
-            useChroot = !(derivationIsImpure(derivationType)) && !noChroot;
-+            useChroot = !allowNetwork() && !(derivationIsImpure(derivationType)) && !noChroot;
-     }
- 
-     auto & localStore = getLocalStore();
-@@ -623,7 +625,7 @@
-                 "nogroup:x:65534:\n", sandboxGid()));
- 
-         /* Create /etc/hosts with localhost entry. */
-        if (!(derivationIsImpure(derivationType)))
-+        if (!allowNetwork() && !(derivationIsImpure(derivationType)))
-             writeFile(chrootRootDir + "/etc/hosts", "127.0.0.1 localhost\n::1 localhost\n");
- 
-         /* Make the closure of the inputs available in the chroot,
-@@ -810,7 +812,7 @@
-            us.
-         */
- 
-        if (!(derivationIsImpure(derivationType)))
-+        if (!allowNetwork() && !(derivationIsImpure(derivationType)))
-             privateNetwork = true;
- 
-         userNamespaceSync.create();
-@@ -1066,7 +1068,7 @@
-        to the builder is generally impure, but the output of
-        fixed-output derivations is by definition pure (since we
-        already know the cryptographic hash of the output). */
-    if (derivationIsImpure(derivationType)) {
-+    if (allowNetwork() || derivationIsImpure(derivationType)) {
-         for (auto & i : parsedDrv->getStringsAttr("impureEnvVars").value_or(Strings()))
-             env[i] = getEnv(i).value_or("");
-     }
-@@ -1702,7 +1704,7 @@
-             /* Fixed-output derivations typically need to access the
-                network, so give them access to /etc/resolv.conf and so
-                on. */
-            if (derivationIsImpure(derivationType)) {
-+            if (allowNetwork() || derivationIsImpure(derivationType)) {
-                 // Only use nss functions to resolve hosts and
-                 // services. Don’t use it for anything else that may
-                 // be configured for this system. This limits the
-@@ -1943,7 +1945,7 @@
- 
-                 sandboxProfile += "(import \"sandbox-defaults.sb\")\n";
- 
-                if (derivationIsImpure(derivationType))
-+                if (allowNetwork() || derivationIsImpure(derivationType))
-                     sandboxProfile += "(import \"sandbox-network.sb\")\n";
- 
-                 /* Add the output paths we'll use at build-time to the chroot */
-diff -Naur /nix/store/32wd1lrf55ymaz1aysrqffpxfgkwl6m4-source/src/libstore/build/local-derivation-goal.hh nix3/src/libstore/build/local-derivation-goal.hh
--- /nix/store/32wd1lrf55ymaz1aysrqffpxfgkwl6m4-source/src/libstore/build/local-derivation-goal.hh	1970-01-01 08:00:01.000000000 +0800
-+++ nix3/src/libstore/build/local-derivation-goal.hh	2021-04-24 16:35:23.060968488 +0800
-@@ -40,6 +40,12 @@
- 
-     Path chrootRootDir;
- 
-+    bool networked;
-+    bool allowNetwork()
-+    {
-+        return derivationIsFixed(drv->type()) || networked;
-+    }
-+
-     /* RAII object to delete the chroot directory. */
-     std::shared_ptr<AutoDelete> autoDelChroot;
- 
--- a/nixbld-etc-nixos/nix-networked-derivations.patch
+++ b/nixbld-etc-nixos/nix-networked-derivations.patch
@ -0,0 +1,80 @@
+diff --git a/src/libstore/build/local-derivation-goal.cc b/src/libstore/build/local-derivation-goal.cc
+index 763045a80..d7c5cc82e 100644
+--- a/src/libstore/build/local-derivation-goal.cc
+++ b/src/libstore/build/local-derivation-goal.cc
+@@ -190,6 +190,8 @@ void LocalDerivationGoal::tryLocalBuild()
+ 
+     assert(derivationType);
+ 
+    networked = parsedDrv->getBoolAttr("__networked");
+
+     /* Are we doing a chroot build? */
+     {
+         auto noChroot = parsedDrv->getBoolAttr("__noChroot");
+@@ -207,7 +209,7 @@ void LocalDerivationGoal::tryLocalBuild()
+         else if (settings.sandboxMode == smDisabled)
+             useChroot = false;
+         else if (settings.sandboxMode == smRelaxed)
+-            useChroot = derivationType->isSandboxed() && !noChroot;
+            useChroot = !networked && derivationType->isSandboxed() && !noChroot;
+     }
+ 
+     auto & localStore = getLocalStore();
+@@ -717,7 +719,7 @@ void LocalDerivationGoal::startBuilder()
+                 "nogroup:x:65534:\n", sandboxGid()));
+ 
+         /* Create /etc/hosts with localhost entry. */
+-        if (derivationType->isSandboxed())
+        if (!networked && derivationType->isSandboxed())
+             writeFile(chrootRootDir + "/etc/hosts", "127.0.0.1 localhost\n::1 localhost\n");
+ 
+         /* Make the closure of the inputs available in the chroot,
+@@ -921,7 +923,7 @@ void LocalDerivationGoal::startBuilder()
+            us.
+         */
+ 
+-        if (derivationType->isSandboxed())
+        if (!networked && derivationType->isSandboxed())
+             privateNetwork = true;
+ 
+         userNamespaceSync.create();
+@@ -1160,7 +1162,7 @@ void LocalDerivationGoal::initEnv()
+        to the builder is generally impure, but the output of
+        fixed-output derivations is by definition pure (since we
+        already know the cryptographic hash of the output). */
+-    if (!derivationType->isSandboxed()) {
+    if (networked || !derivationType->isSandboxed()) {
+         for (auto & i : parsedDrv->getStringsAttr("impureEnvVars").value_or(Strings()))
+             env[i] = getEnv(i).value_or("");
+     }
+@@ -1829,7 +1831,7 @@ void LocalDerivationGoal::runChild()
+             /* Fixed-output derivations typically need to access the
+                network, so give them access to /etc/resolv.conf and so
+                on. */
+-            if (!derivationType->isSandboxed()) {
+            if (networked || !derivationType->isSandboxed()) {
+                 // Only use nss functions to resolve hosts and
+                 // services. Don’t use it for anything else that may
+                 // be configured for this system. This limits the
+@@ -2071,7 +2073,7 @@ void LocalDerivationGoal::runChild()
+                 #include "sandbox-defaults.sb"
+                 ;
+ 
+-            if (!derivationType->isSandboxed())
+            if (networked || !derivationType->isSandboxed())
+                 sandboxProfile +=
+                     #include "sandbox-network.sb"
+                     ;
+diff --git a/src/libstore/build/local-derivation-goal.hh b/src/libstore/build/local-derivation-goal.hh
+index 86b86c01e..95b03aae8 100644
+--- a/src/libstore/build/local-derivation-goal.hh
+++ b/src/libstore/build/local-derivation-goal.hh
+@@ -82,6 +82,8 @@ struct LocalDerivationGoal : public DerivationGoal
+      */
+     Path chrootRootDir;
+ 
+    bool networked;
+
+     /**
+      * RAII object to delete the chroot directory.
+      */
--- a/nixbld-etc-nixos/rfq/src/rfq/init.py
+++ b/nixbld-etc-nixos/rfq/src/rfq/init.py
@ -14,6 +14,13 @@ from werkzeug.middleware.proxy_fix import ProxyFix

 load_dotenv()

+mail_password_file = getenv("FLASK_MAIL_PASSWORD_FILE")
+if mail_password_file is not None:
+    with open(mail_password_file, "r") as f:
+        mail_password = f.read().strip()
+else:
+    mail_password = None
+
 app = Flask(__name__)
 app.config.update(
    DEBUG=getenv("FLASK_DEBUG") == "True",
@ -22,7 +29,7 @@ app.config.update(
    MAIL_USE_SSL=getenv("FLASK_MAIL_USE_SSL"),
    MAIL_DEBUG=False,
    MAIL_USERNAME=getenv("FLASK_MAIL_USERNAME"),
-    MAIL_PASSWORD=getenv("FLASK_MAIL_PASSWORD"),
+    MAIL_PASSWORD=mail_password,
    MAIL_RECIPIENT=getenv("FLASK_MAIL_RECIPIENT"),
    MAIL_SENDER=getenv("FLASK_MAIL_SENDER")
 )
--- a/nixbld-etc-nixos/rfq/uwsgi-config.nix
+++ b/nixbld-etc-nixos/rfq/uwsgi-config.nix
@ -7,13 +7,13 @@ in {
  pythonPackages = self: [ pkg ];
  module = "rfq:app";
  env = [
-    "FLASK_MAIL_SERVER=ssl.serverraum.org"
+    "FLASK_MAIL_SERVER=mail.m-labs.hk"
    "FLASK_MAIL_PORT=465"
    "FLASK_MAIL_USE_SSL=True"
-    "FLASK_MAIL_USERNAME=sales@m-labs.hk"
-    "FLASK_MAIL_PASSWORD=${import /etc/nixos/secret/sales_password.nix}"
+    "FLASK_MAIL_USERNAME=sysop@m-labs.hk"
+    "FLASK_MAIL_PASSWORD_FILE=/etc/nixos/secret/rfqpassword"
    "FLASK_MAIL_RECIPIENT=sales@m-labs.hk"
-    "FLASK_MAIL_SENDER=sales@m-labs.hk"
+    "FLASK_MAIL_SENDER=sysop@m-labs.hk"
  ];
  socket = "${config.services.uwsgi.runDir}/uwsgi-rfq.sock";
  # allow access from nginx
--- a/nixbld-etc-nixos/rt.nix
+++ b/nixbld-etc-nixos/rt.nix
@ -19,14 +19,9 @@ let
      Set($Timezone, '${cfg.timeZone}');

      Set($DatabaseType, 'Pg');
-      Set($DatabaseHost, 'localhost');
-      Set($DatabaseUser, 'rt_user');
+      Set($DatabaseHost, '/run/postgresql');
+      Set($DatabaseUser, 'rt');
      Set($DatabaseName, 'rt5');
-      # Read database password from file
-      open my $fh, '<', '${cfg.dbPasswordFile}' or die 'Can\'t open file $!';
-      my $dbpw = do { local $/; <$fh> };
-      $dbpw =~ s/^\s+|\s+$//g;
-      Set($DatabasePassword, $dbpw);

      # System (Logging)
      Set($LogToSTDERR, undef); # Don't log twice
@ -35,7 +30,7 @@ let
      Set($OwnerEmail, '${cfg.ownerEmail}');
      Set($MaxAttachmentSize, 15360000);
      Set($CheckMoreMSMailHeaders, 1);
-      Set($RTAddressRegexp, '^(helpdesk|sales)\@(m-labs.hk)$');
+      Set($RTAddressRegexp, '^(helpdesk)\@(m-labs.hk|m-labs-intl.com)$');
      Set($LoopsToRTOwner, 0);

      # System (Outgoing mail)
@ -154,13 +149,6 @@ in {
      type = str;
    };

-    dbPasswordFile = mkOption {
-      description = "File containing the database password";
-      type = str;
-      default = "/etc/nixos/secret/rtpasswd";
-      internal = true;
-    };
-
    domain = mkOption {
      description = "Which domain RT is running on";
      type = str;
@ -245,8 +233,6 @@ in {

          PrivateNetwork = false;
          MemoryDenyWriteExecute = false;
-
-          ReadOnlyPaths = [ cfg.dbPasswordFile ];
        };

        environment = {
--- a/nixops/athena-hardware-configuration.nix
+++ b/nixops/athena-hardware-configuration.nix
@ -0,0 +1,45 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+
+  boot.kernelPackages = pkgs.linuxPackages_latest;
+  boot.initrd.availableKernelModules = [ "xhci_pci" "thunderbolt" "ahci" "nvme" "usbhid" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-intel" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-uuid/89463254-b38d-45db-92b6-0f7d92a44f47";
+      fsType = "ext4";
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/F84B-ACC5";
+      fsType = "vfat";
+      options = [ "fmask=0022" "dmask=0022" ];
+    };
+
+  swapDevices = [ ];
+
+  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
+  # (the default) this is the recommended approach. When using systemd-networkd it's
+  # still possible to use this option, but it's recommended to use it in conjunction
+  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
+  networking.useDHCP = lib.mkDefault true;
+  # networking.interfaces.enp86s0.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.efi.canTouchEfiVariables = true;
+
+  hardware.cpu.intel.updateMicrocode = true;
+
+  system.stateVersion = "23.11";
+}
--- a/nixops/avscan-module.nix
+++ b/nixops/avscan-module.nix
@ -0,0 +1,45 @@
+{ config, pkgs, lib, ... }:
+with lib;
+let
+  avscan = pkgs.writeScript "avscan" ''
+    #!${pkgs.bash}/bin/bash
+
+    for user in $(cut -d":" -f1 /etc/passwd); do
+      if [ -d "/home/$user" ]; then
+          nice -15 ${pkgs.sudo}/bin/sudo -u $user ${pkgs.clamav}/bin/clamscan --recursive --quiet --infected /home/$user
+      fi
+    done
+  '';
+  cfg = config.services.avscan;
+in
+{
+  options.services.avscan = {
+    enable = mkOption {
+      type = types.bool;
+      default = false;
+      description = "Enable antivirus scan";
+    };
+  };
+
+  config = mkIf cfg.enable {
+    services.clamav.updater.enable = true;
+    services.clamav.updater.interval = "daily";
+    services.clamav.updater.frequency = 1;
+
+    systemd.services.avscan = {
+      description = "Antivirus scan";
+      serviceConfig = {
+        Type = "oneshot";
+        User = "root";
+        Group = "root";
+        ExecStart = "${avscan}";
+      };
+    };
+
+    systemd.timers.avscan = {
+      description = "Antivirus scan";
+      wantedBy = [ "timers.target" ];
+      timerConfig.OnCalendar = "Mon *-*-* 13:00:00";
+    };
+  };
+}
--- a/nixops/chiron-hardware-configuration.nix
+++ b/nixops/chiron-hardware-configuration.nix
@ -18,15 +18,18 @@
  fileSystems."/boot" =
    { device = "/dev/disk/by-uuid/060C-8772";
      fsType = "vfat";
+      options = [ "fmask=0022" "dmask=0022" ];
    };

  swapDevices = [ ];

-  nix.maxJobs = lib.mkDefault 16;
+  nix.settings.max-jobs = lib.mkDefault 16;
  powerManagement.cpuFreqGovernor = lib.mkDefault "powersave";

  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;

+  hardware.cpu.intel.updateMicrocode = true;
+
  system.stateVersion = "19.03";
 }
--- a/nixops/cnc-hardware-configuration.nix
+++ b/nixops/cnc-hardware-configuration.nix
@ -1,31 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-{
-  imports =
-    [ <nixpkgs/nixos/modules/installer/scan/not-detected.nix>
-    ];
-
-  boot.initrd.availableKernelModules = [ "ata_generic" "uhci_hcd" "ehci_pci" "ahci" "usb_storage" "usbhid" "floppy" "sd_mod" "sr_mod" ];
-  boot.initrd.kernelModules = [ ];
-  boot.kernelModules = [ "kvm-intel" ];
-  boot.extraModulePackages = [ ];
-
-  fileSystems."/" =
-    { device = "/dev/disk/by-uuid/35d9c50c-e479-43a9-8324-b8ded5b71844";
-      fsType = "ext4";
-    };
-
-  swapDevices =
-    [ { device = "/dev/disk/by-uuid/d8480389-c558-4c46-a58f-00207315dbdd"; }
-    ];
-
-  nix.maxJobs = lib.mkDefault 2;
-
-  boot.loader.grub.enable = true;
-  boot.loader.grub.version = 2;
-  boot.loader.grub.device = "/dev/sda";
-
-  services.xserver.videoDrivers = ["intel"];
-
-  system.stateVersion = "19.03";
-}
--- a/nixops/common-users.nix
+++ b/nixops/common-users.nix
@ -3,16 +3,16 @@
 {
  root = {
    openssh.authorizedKeys.keys = [
-      "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCyPk5WyFoWSvF4ozehxcVBoZ+UHgrI7VW/OoQfFFwIQe0qvetUZBMZwR2FwkLPAMZV8zz1v4EfncudEkVghy4P+/YVLlDjqDq9zwZnh8Nd/ifu84wmcNWHT2UcqnhjniCdshL8a44memzABnxfLLv+sXhP2x32cJAamo5y6fukr2qLp2jbXzR+3sv3klE0ruUXis/BR1lLqNJEYP8jB6fLn2sLKinnZPfn6DwVOk10mGeQsdME/eGl3phpjhODH9JW5V2V5nJBbC0rBnq+78dyArKVqjPSmIcSy72DEIpTctnMEN1W34BGrnsDd5Xd/DKxKxHKTMCHtZRwLC2X0NWN"
-      "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCMALVC8RDTHec+PC8y1s3tcpUAODgq6DEzQdHDf/cyvDMfmCaPiMxfIdmkns5lMa03hymIfSmLUF0jFFDc7biRp7uf9AAXNsrTmplHii0l0McuOOZGlSdZM4eL817P7UwJqFMxJyFXDjkubhQiX6kp25Kfuj/zLnupRCaiDvE7ho/xay6Jrv0XLz935TPDwkc7W1asLIvsZLheB+sRz9SMOb9gtrvk5WXZl5JTOFOLu+JaRwQLHL/xdcHJTOod7tqHYfpoC5JHrEwKzbhTOwxZBQBfTQjQktKENQtBxXHTe71rUEWfEZQGg60/BC4BrRmh4qJjlJu3v4VIhC7SSHn1"
+      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBF/YybP+fQ0J+bNqM5Vgx5vDmVqVWsgUdF1moUxghv7d73GZAFaM6IFBdrXTAa33AwnWwDPMrTgP1V6SXBkb3ciJo/lD1urJGbydbSI5Ksq9d59wvOeANvyWYrQw6+eqTQ=="
+      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBDf6+TFaUtITiiU7b6DOiT4/C8fzCq70j9DGnNyo/+5bS7ffRezTS0AqqltHQs9/lbjUbtP+Iil7RUGF0o0X6v5y/Gt/GdV9QR+Nv1mJCF1KVOeMKm/vB0jjN+ncwHU+BA=="
    ];
  };
  sb = {
    isNormalUser = true;
    extraGroups = ["wheel" "plugdev" "dialout" "libvirtd"];
    openssh.authorizedKeys.keys = [
-      "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCyPk5WyFoWSvF4ozehxcVBoZ+UHgrI7VW/OoQfFFwIQe0qvetUZBMZwR2FwkLPAMZV8zz1v4EfncudEkVghy4P+/YVLlDjqDq9zwZnh8Nd/ifu84wmcNWHT2UcqnhjniCdshL8a44memzABnxfLLv+sXhP2x32cJAamo5y6fukr2qLp2jbXzR+3sv3klE0ruUXis/BR1lLqNJEYP8jB6fLn2sLKinnZPfn6DwVOk10mGeQsdME/eGl3phpjhODH9JW5V2V5nJBbC0rBnq+78dyArKVqjPSmIcSy72DEIpTctnMEN1W34BGrnsDd5Xd/DKxKxHKTMCHtZRwLC2X0NWN"
-      "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCMALVC8RDTHec+PC8y1s3tcpUAODgq6DEzQdHDf/cyvDMfmCaPiMxfIdmkns5lMa03hymIfSmLUF0jFFDc7biRp7uf9AAXNsrTmplHii0l0McuOOZGlSdZM4eL817P7UwJqFMxJyFXDjkubhQiX6kp25Kfuj/zLnupRCaiDvE7ho/xay6Jrv0XLz935TPDwkc7W1asLIvsZLheB+sRz9SMOb9gtrvk5WXZl5JTOFOLu+JaRwQLHL/xdcHJTOod7tqHYfpoC5JHrEwKzbhTOwxZBQBfTQjQktKENQtBxXHTe71rUEWfEZQGg60/BC4BrRmh4qJjlJu3v4VIhC7SSHn1"
+      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBF/YybP+fQ0J+bNqM5Vgx5vDmVqVWsgUdF1moUxghv7d73GZAFaM6IFBdrXTAa33AwnWwDPMrTgP1V6SXBkb3ciJo/lD1urJGbydbSI5Ksq9d59wvOeANvyWYrQw6+eqTQ=="
+      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBDf6+TFaUtITiiU7b6DOiT4/C8fzCq70j9DGnNyo/+5bS7ffRezTS0AqqltHQs9/lbjUbtP+Iil7RUGF0o0X6v5y/Gt/GdV9QR+Nv1mJCF1KVOeMKm/vB0jjN+ncwHU+BA=="
    ];
  };
  rj = {
@ -33,42 +33,13 @@
      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBPsv4UMEFV0UHeHdA9R3sC+qoMxrqhcuFqwqWMI4AF/lixwcbRyA8QKiu/7R22m2u6pp+Zk6hYqcxdgClI4uN2oQhVjJX6wEgfT94vC/67OKJI/NNVsR8G0lr0ufCo4Lbw=="
    ];
  };
-  pca006132 = {
-    isNormalUser = true;
-    extraGroups = ["plugdev" "dialout" "wireshark"];
-    openssh.authorizedKeys.keys = [
-      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBE/sPOOiw3843+rrcYV2pOVkffNc1xsOgnuCUmy1Fa2VF8x9kqmgQv61sxsuKRkKKoinvqrASxLkWVd6nkiiDuEISibEXs8r1BwuT05cS7RkEhCakSMZ6y/iqOtjt2bx+A=="
-      "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAACAQCrC43AF/aHv9NHormDMw18m/iE3luNc4CIwgPgTClly4b9yRyQGhm4mKkKix07fP9SfdyvUPPrYhwoHhf0zGkfFNE26FIG2Bul9UkZVP3ygnIXHD7sKUJP7Ra4UID6Naf3Mr2Dckh7rAiw8WN2QB+oO2tni3PyceEOdu8OoEsmSu8qusJFVhnaoYJyQflgGl3bFUZkhaf1JKQmv9C92sfKQkrfSNb2dNrc3Oe1uP5VokhLhjsOoDWyJ45a7ru6lr4/Co5sF9xX59cOOBU+ktiOakDI8NLI5AO7R0dCKLW55wUnml5boeCV45p1MPXVEznX8IM6kRgOhVx3fnd0TqV5M8xeY0dk7aTWTFSkIz82xHhKFbce5xx+9MFrlvUgHYVpbIUQTq6HS6cLZEeWHDLuUqbRFB4J7UfieiRZfxWw74Tgyq+HlvlNg/cVn0nhouq6+sY6QI9MGbwbEnjkD5KbSUHUCSeLgNc8pb0RxLkAqPGh8QkYrb6Nudl8HjWfIuZFGrRhcGBySt/oaYUDrUg5VNA98FjQL2QfKRVepvpGgUEGW6eZK9IrYz1Ct30Sb65QujUMRuDnWq1CeulAXCZQHc32wOrHRkMEUdhfOgNojZRTGduPayHXoDq7XB249D2VjH/vEuiLfWNLr+rabGyMUPpQaDypeBgOsUTbceKbDw=="
-    ];
-    shell = pkgs.zsh;
-  };
  occheung = {
    isNormalUser = true;
-    extraGroups = ["plugdev" "dialout" "wireshark"];
+    extraGroups = ["plugdev" "dialout"];
    openssh.authorizedKeys.keys = [
      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBPEvmWmxpFpMgp5fpjKud8ev0cyf/+X5fEpQt/YD/+u4mbvZYPE300DLqQ0h/qjgvaGMz1ndf4idYnRdy+plJEC/+hmlRW5NlcpAr3S/LYAisacgKToFVl+MlBo+emS9Ig=="
    ];
  };
-  ak = {
-    isNormalUser = true;
-    openssh.authorizedKeys.keys = [
-      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBLTzNGqfswE9QF28fuSzpTFAKs4gXQA1LcRsB9WVoYxcLMoqqEAmzEqqzIAQFocMLZHB4A0YnSK9wKDdRWYjKRAfqKfWb/2b5w1OLaYz+Idho8KAOYxDfhXusYPq7Z9/rA=="
-    ];
-  };
-  ychenfo = {
-    isNormalUser = true;
-    extraGroups = ["plugdev" "dialout"];
-    openssh.authorizedKeys.keys = [
-      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBJDEHOerlYRjkTaaa9HLLjTRuLAkPdhcRiizUkmANKgKdO17xZ7Or05dAGeeivv+TEmJShSK0EljhGv/+pTHrf/L0d7pExSjyb0m08iYb8gLCoQVx7hcFLIGiYnNoLab9g=="
-    ];
-  };
-  geekzjk = {
-    isNormalUser = true;
-    extraGroups = ["plugdev" "dialout"];
-    openssh.authorizedKeys.keys = [
-      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBJkGRYVmOXvPSne2xUYbC8XyotTQ4pr6dwR7IiRgOSHqwm6ECHRtjMM2hneI+lBv91YCg/l5WXE111dNXw6vniBIEqjrErz3MmjEZ5aFJI6l9KiyJ4zueRubuUyBVevaEw=="
-    ];
-  };
  spaqin = {
    isNormalUser = true;
    extraGroups = ["plugdev" "dialout"];
@ -77,32 +48,67 @@
    ];
    shell = pkgs.zsh;
  };
-  therobs12 = {
+  srayman89 = {
    isNormalUser = true;
-    extraGroups = ["libvirtd"];
+    extraGroups = ["plugdev" "dialout" "libvirtd"];
    openssh.authorizedKeys.keys = [
-      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBGKbLMWCWrcUIVDKc7wrkn1Oo1PCH3K0HWIXnPjgASqKdzrNkgrHcg8UsXS0tLKtoYWbWisVUU+V05p6RKMOP7TP6hc2xoVRov6fBMuKHnVJbR9BAkn3O2EaJ7Rlo0y8aQ=="
+      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBMoGOV9HoFkm6S6zMfOc8ivUcGzKFxuqpmOXKQtg2nn5Kh6ByMuuAHFlvKISILBaWgXN8lPQN9VjLuXV93oG4Pe7u8EVw20IGbA6RZ4Pnnr1xQBESPbye+72taLvyQlxGA=="
    ];
  };
-  ciciwu = {
+  esavkin = {
+    isNormalUser = true;
+    extraGroups = ["plugdev" "dialout" "libvirtd" "wireshark"];
+    openssh.authorizedKeys.keys = [
+      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBLDJI4GFLBmScbeR8Jh4Gi8A/2nuGlYtFTJVT+Es/bzdiPRk8DLG62T0hyRR+8LfHjbrCsDuYFNztT8hHGXd7h3xp3y2X7ArkJo8xUK5QxGd5D2Zn4ANfZTTVkoGlEHbFA=="
+    ];
+  };
+  flo = {
    isNormalUser = true;
    extraGroups = ["plugdev" "dialout"];
    openssh.authorizedKeys.keys = [
-      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBIzRznRnbyIfo64IVlZNS6ZisPNYKoIeadkXz0dhvp4RBzOKbIOj/9wVbtmMvbScuDJw79dSk0cviaTU8hfMfSplzm3iZGqX4N4JWPtPQAu28e3P6Cu89AiKKjT3dUM50Q=="
+      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBF4ZYNBYqJPQCKBYjMatFj5eGMyzh/X2TSraJEG6XBdg3jnJ3WcsOd7sm+vx+o9Y1EJ2kvwW/Vy9c3OYVU2U45njox//sKtt8Eyzszws3EYJqHQ6KAwXtW9ao4aamRtK3Q=="
    ];
  };
-  stevefan1999 = {
+  srenblad = {
    isNormalUser = true;
-    extraGroups = ["plugdev" "dialout" "wireshark"];
+    extraGroups = ["plugdev" "dialout"];
    openssh.authorizedKeys.keys = [
-      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBCxQXT1Qd9ysrCAgJl+81UpiL7/32CzYXvZeByG7MatJ1o2DOBZmm5r4GEwz2F9bRc/KIc9UyurX0jWS6O5FhAYLg4ekCrm5bvLEgl8py4Cd+VZY8wM3nQGyDTFQzeg4lQ=="
+      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBLoMzO8XIkUTKUC0R05EmXn3V6gm2oMvXhh+j68G9TDBeb8x0WFkz16NPclsXdMcb2dFhtLmxUHwB5L4zWSuyYkqr0YRrtly3uwXe5Wnyz1ZAkxoq7YjQlanWSri11U8xw=="
    ];
  };
-  topquark12 = {
+  linuswck = {
    isNormalUser = true;
    extraGroups = ["plugdev" "dialout" "wireshark" "libvirtd"];
    openssh.authorizedKeys.keys = [
-      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBGtaB32Ri1O7zRVG+1ADXmhwbK0r8R+c5W1RJd7cab5O9jp10wI+0JArFgK8u4m9oaR1rrVy4ym8wWMNu8vGKVTgyK+6UK87qTD96pnzwTyvzKCMOIHVBAPsnVfdOSKXLQ=="
+      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBAFYwmik6/xY1vb9aKBOpKklKOwSJJ0PEgNwWNULghZGJ0g4CTk04LXLSMYBm1SW74df8YMgaE/eoidq6smN6hKIgo8s3qPQGZAi4UXffMs2ciqXNa/zZcCu3PyZvyksxA=="
+    ];
+  };
+  morgan = {
+    isNormalUser = true;
+    extraGroups = ["plugdev" "dialout" "wireshark" "libvirtd"];
+    openssh.authorizedKeys.keys = [
+      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBDXMbJEPn0mM2Bgt6eMAd+c0J5oPSvquZG+BxKdUf0qbeQldRaoB26NHMZnLte/fS00U/cqStLWDiwtEvH5WlbbawsMBymm65zbWMByebXhBDjdr6a1kkOFcKJvAL9qVBQ=="
+    ];
+  };
+  atse = {
+    isNormalUser = true;
+    extraGroups = ["plugdev" "dialout"];
+    openssh.authorizedKeys.keys = [
+      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBJHMX1YDnBPQfZyGVtc93u4TIFWqnHEe6WB/eTeiOjFulitXzGfhsODZ08GzTi2+YKk7spRiPKNwRPTKFuW2PPe3Xig8b75qRMIeIVX3b7e0i6xP85eg4jdiz0LD2YGUHQ=="
+    ];
+  };
+  derppening = {
+    isNormalUser = true;
+    extraGroups = ["plugdev" "dialout"];
+    openssh.authorizedKeys.keys = [
+      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBOKwN4ui94QfouYYlkI1lc3WgtjURVYLTdAizJIBnY3dNRNblAiuvTD4pQ+LEI+eOTg4SnQz1NeqH4YOQhbT5+/nZojvGTb3UVN13ZYND+Gci3DdqB2mwIYop7kMXwHgLQ=="
+    ];
+  };
+  therobs12 = {
+    isNormalUser = true;
+    extraGroups = ["plugdev" "dialout"];
+    openssh.authorizedKeys.keys = [
+      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBK1tUg7TtceARRnGI80Ai5kNFolFfZ++LH9v1UoRCiJdxeQWPdNYO0Gj7+ejJvgZXwvN4yHGgcZHraEml4Mj/dKrEMFygfuYLDRmXtPFwX6TNMrWlxMhPzuNY+yCaxlqYg=="
    ];
  };

@ -113,11 +119,4 @@
      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBGChLocYJi8XcSJkIjT2Olm3jPGjtRq5aORa5G9F3OqmjCfvav9Q5+2Mc64XqHtNTffnJuDe4gv+lVJatC0URvPs2HyxXmxRK0jgkkLSUsV2SYLlgMqHW3jsrdh6wKBmkg=="
    ];
  };
-  tom = {
-    isNormalUser = true;
-    extraGroups = ["plugdev" "dialout"];
-    openssh.authorizedKeys.keys = [
-      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIDCK1oOnVC5VJYQhmo8AvuKeApoEIbosJaEj81uBVt11"
-    ];
-  };
 }
--- a/nixops/demeter-hardware-configuration.nix
+++ b/nixops/demeter-hardware-configuration.nix
@ -0,0 +1,46 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "xhci_pci" "thunderbolt" "ahci" "nvme" "usbhid" "usb_storage" "sd_mod" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-intel" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-uuid/c7fa9c3e-56ca-4258-a49c-3f064efbd58c";
+      fsType = "ext4";
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/76A2-F01F";
+      fsType = "vfat";
+      options = [ "fmask=0022" "dmask=0022" ];
+    };
+
+  swapDevices = [ ];
+
+  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
+  # (the default) this is the recommended approach. When using systemd-networkd it's
+  # still possible to use this option, but it's recommended to use it in conjunction
+  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
+  networking.useDHCP = lib.mkDefault true;
+  # networking.interfaces.enp86s0.useDHCP = lib.mkDefault true;
+  # networking.interfaces.wlo1.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  powerManagement.cpuFreqGovernor = lib.mkDefault "powersave";
+
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.efi.canTouchEfiVariables = true;
+
+  hardware.cpu.intel.updateMicrocode = true;
+
+  system.stateVersion = "23.05";
+}
--- a/nixops/desktop.nix
+++ b/nixops/desktop.nix
@ -2,13 +2,7 @@

 { config, pkgs, ... }:
 let
-  m-labs = import (fetchTarball https://nixbld.m-labs.hk/channel/custom/artiq/full/artiq-full/nixexprs.tar.xz) { inherit pkgs; };
-  pkgs-unstable = import (pkgs.fetchFromGitHub {
-    owner = "nixos";
-    repo = "nixpkgs";
-    rev = "2ec0c698eaf3e7a4d13988538f08d65b3d006f40";
-    sha256 = "137py5fhmjs3p1dgqmd7cxsxzzs67nrqqijxmflb0ck1fnfzrij7";
-  }) {};
+  artiq = builtins.getFlake git+https://github.com/m-labs/artiq.git;
 in
 {
  deployment.targetHost = host;
@ -16,19 +10,35 @@ in
  nix.nixPath = [ "nixpkgs=${pkgs.path}" ];
  programs.command-not-found.dbPath = "${pkgs.path}/programs.sqlite";

+  boot.loader.systemd-boot.memtest86.enable = true;
+  boot.loader.grub.memtest86.enable = true;
+
  imports =
    [
      (./. + "/${host}-hardware-configuration.nix")
+      ./avscan-module.nix
    ];
  nixpkgs.config.packageOverrides = super: let self = super.pkgs; in {
+    libp11 = super.libp11.override({ openssl = super.openssl_1_1; });
    pam_p11 = super.pam_p11.overrideAttrs(oa: {
-      patchPhase = oa.patchPhase or "" + ''
-          substituteInPlace src/match_openssh.c --replace \
-            '"%s/.ssh/authorized_keys", pw->pw_dir)' \
-            '"/etc/ssh/authorized_keys.d/%s", pw->pw_name)'
+      patches = [];
+      postPatch = ''
+        substituteInPlace src/match_openssh.c --replace \
+          '"%s/.ssh/authorized_keys", pw->pw_dir)' \
+          '"/etc/ssh/authorized_keys.d/%s", pw->pw_name)'
        '';
    });
+    gnome = super.gnome // {
+       gnome-keyring = super.gnome.gnome-keyring.overrideAttrs(oa: {
+          configureFlags = oa.configureFlags ++ ["--disable-ssh-agent"];
+        });
+    };
  };
+  nixpkgs.config.permittedInsecurePackages = [
+    "openssl-1.1.1w"
+  ];
+
+  boot.binfmt.emulatedSystems = [ "armv7l-linux" ];

  networking.hostName = host;
  networking.firewall.allowedTCPPorts = [ 1883 ];
@ -41,25 +51,32 @@ in
  nixpkgs.config.allowUnfree = true;
  environment.systemPackages = with pkgs; [
    opensc yubikey-manager yubikey-manager-qt yubico-piv-tool
-    wget vim gitAndTools.gitFull sshfs firefox chromium thunderbird hexchat
+    wget vim gitAndTools.gitFull sshfs
+    firefox
+    thunderbird
+    chromium
    usbutils pciutils uhubctl file lm_sensors audacious acpi
    gimp imagemagick
-    (python3.withPackages(ps: with ps; [ numpy scipy matplotlib qtconsole regex ]))
+    (python3.withPackages(ps: with ps; [ numpy scipy matplotlib qtconsole regex jinja2 ]))
+    texlive.combined.scheme-full
    mosh psmisc libreoffice-fresh
-    gtkwave telnet unzip zip gnupg
-    gnome3.gnome-tweaks
+    inkscape
+    xournal
+    xsane
+    gtkwave unzip zip gnupg
+    gnome-tweaks
+    ghex
    jq sublime3 rink qemu_kvm
-    tmux xc3sprog m-labs.openocd screen gdb minicom picocom tigervnc
+    tmux screen gdb minicom picocom
+    artiq.packages.x86_64-linux.openocd-bscanspi
+    xc3sprog
+    gqrx
    emacs bat ripgrep
-    xpra
-    rust-analyzer
-    (vscode-with-extensions.override {
-      vscodeExtensions = [
-        vscode-extensions.matklad.rust-analyzer
-      ];
-    })
-    pkgs-unstable.joplin-desktop
+    guake
+    vscodium
+    waypipe
    virt-manager spice-gtk
+    kicad
    any-nix-shell
  ];
  programs.wireshark.enable = true;
@ -73,9 +90,11 @@ in
    setuid = true;
  };

+  services.avscan.enable = true;
+
  services.openssh.enable = true;
-  services.openssh.forwardX11 = true;
-  services.openssh.passwordAuthentication = false;
+  services.openssh.authorizedKeysInHomedir = false;
+  services.openssh.settings.PasswordAuthentication = false;
  services.openssh.extraConfig =
    ''
    StreamLocalBindUnlink yes
@ -88,7 +107,6 @@ in
    PKCS11Provider "${pkgs.opensc}/lib/opensc-pkcs11.so"
    '';
  programs.ssh.startAgent = true;
-  services.gnome.gnome-keyring.enable = pkgs.lib.mkForce false;
  programs.ssh.agentPKCS11Whitelist = "${pkgs.opensc}/lib/opensc-pkcs11.so";
  security.pam.p11.enable = true;

@ -108,31 +126,21 @@ in
  };
  services.avahi = {
    enable = true;
-    nssmdns = true;
+    nssmdns4 = true;
  };

-  # Enable sound.
-  sound.enable = true;
-  hardware.pulseaudio = {
-    enable = true;
-    extraModules = [ pkgs.pulseaudio-modules-bt ];
-    package = pkgs.pulseaudioFull;
-  };
+  hardware.graphics.enable32Bit = true;

-  i18n.inputMethod = {
-    enabled = "fcitx";
-    fcitx.engines = with pkgs.fcitx-engines; [ table-extra m17n ];
-  };
-  fonts.fonts = [ pkgs.noto-fonts pkgs.noto-fonts-cjk pkgs.noto-fonts-emoji pkgs.noto-fonts-extra pkgs.emacs-all-the-icons-fonts ];
+  fonts.packages = [ pkgs.noto-fonts pkgs.noto-fonts-cjk-sans pkgs.noto-fonts-emoji pkgs.noto-fonts-extra pkgs.emacs-all-the-icons-fonts ];

  # Enable the X11 windowing system.
  services.xserver.enable = true;
-  services.xserver.layout = "us";
-  services.xserver.xkbOptions = "eurosign:e";
+  services.xserver.xkb.layout = "us";
+  services.xserver.xkb.options = "eurosign:e";

  services.xserver.displayManager.gdm.enable = true;
  services.xserver.desktopManager.gnome.enable = true;
-  environment.gnome.excludePackages = [ pkgs.epiphany pkgs.gnome3.geary ];
+  environment.gnome.excludePackages = [ pkgs.epiphany ];

  systemd.suppressedSystemUnits = [
      "hibernate.target"
@ -148,6 +156,7 @@ in

  hardware.bluetooth.enable = true;

+  programs.zsh.enable = true;
  programs.fish.enable = true;
  programs.fish.promptInit = ''
    any-nix-shell fish --info-right | source
@ -157,15 +166,14 @@ in
  users.extraGroups.plugdev = { };
  users.extraUsers = import ./common-users.nix { inherit pkgs; };
  security.sudo.wheelNeedsPassword = false;
-  services.udev.packages = [ m-labs.openocd ];
+  services.udev.packages = [ artiq.packages.x86_64-linux.openocd-bscanspi ];
  services.udev.extraRules = (import ./extra-udev.nix);

-  nix.binaryCachePublicKeys = ["nixbld.m-labs.hk-1:5aSRVA5b320xbNvu30tqxVPXpld73bhtOeH6uAjRyHc="];
-  nix.binaryCaches = ["https://nixbld.m-labs.hk" "https://cache.nixos.org"];
-  nix.sandboxPaths = ["/opt"];
+  nix.settings.trusted-public-keys = ["nixbld.m-labs.hk-1:5aSRVA5b320xbNvu30tqxVPXpld73bhtOeH6uAjRyHc="];
+  nix.settings.substituters = ["https://nixbld.m-labs.hk?priority=10"];
+  nix.settings.extra-sandbox-paths = ["/opt"];

-  nix.package = pkgs.nix_2_4;
  nix.extraOptions = ''
-    experimental-features = nix-command flakes
+    experimental-features = nix-command flakes impure-derivations
  '';
 }
--- a/nixops/device-tree-module.nix
+++ b/nixops/device-tree-module.nix
@ -1,67 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
-
-let
-  cfg = config.hardware.deviceTree;
-in {
-  options = {
-      hardware.deviceTree = {
-        enable = mkOption {
-          default = pkgs.stdenv.hostPlatform.platform.kernelDTB or false;
-          type = types.bool;
-          description = ''
-            Build device tree files. These are used to describe the
-            non-discoverable hardware of a system.
-          '';
-        };
-
-        base = mkOption {
-          default = "${config.boot.kernelPackages.kernel}/dtbs";
-          defaultText = "\${config.boot.kernelPackages.kernel}/dtbs";
-          example = literalExample "pkgs.device-tree_rpi";
-          type = types.path;
-          description = ''
-            The path containing the base device-tree (.dtb) to boot. Contains
-            device trees bundled with the Linux kernel by default.
-          '';
-        };
-
-        name = mkOption {
-          default = null;
-          example = "some-dtb.dtb";
-          type = types.nullOr types.str;
-          description = ''
-            The name of an explicit dtb to be loaded, relative to the dtb base.
-            Useful in extlinux scenarios if the bootloader doesn't pick the
-            right .dtb file from FDTDIR.
-          '';
-        };
-
-        overlays = mkOption {
-          default = [];
-          example = literalExample
-            "[\"\${pkgs.device-tree_rpi.overlays}/w1-gpio.dtbo\"]";
-          type = types.listOf types.path;
-          description = ''
-            A path containing device tree overlays (.dtbo) to be applied to all
-            base device-trees.
-          '';
-        };
-
-        package = mkOption {
-          default = null;
-          type = types.nullOr types.path;
-          internal = true;
-          description = ''
-            A path containing the result of applying `overlays` to `base`.
-          '';
-        };
-      };
-  };
-
-  config = mkIf (cfg.enable) {
-    hardware.deviceTree.package = if (cfg.overlays != [])
-      then pkgs.deviceTree.applyOverlays cfg.base cfg.overlays else cfg.base;
-  };
-}
--- a/nixops/device-tree-pkg.nix
+++ b/nixops/device-tree-pkg.nix
@ -1,17 +0,0 @@
-{ lib, stdenvNoCC, dtc, findutils }:
-
-with lib; {
-  applyOverlays = (base: overlays: stdenvNoCC.mkDerivation {
-    name = "device-tree-overlays";
-    nativeBuildInputs = [ dtc findutils ];
-    buildCommand = let
-      quotedDtbos = concatMapStringsSep " " (o: "\"${toString o}\"") (toList overlays);
-    in ''
-      for dtb in $(find ${base} -name "*.dtb" ); do
-        outDtb=$out/$(realpath --relative-to "${base}" "$dtb")
-        mkdir -p "$(dirname "$outDtb")"
-        fdtoverlay -o "$outDtb" -i "$dtb" ${quotedDtbos};
-      done
-    '';
-  });
-}
--- a/nixops/experimental-users.nix
+++ b/nixops/experimental-users.nix
@ -1,10 +0,0 @@
-{ pkgs, ... }:
-
-{
-  creotech = {
-    isNormalUser = true;
-    openssh.authorizedKeys.keys = [
-      "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCz2zz2tzQS+jzORA+D/KiVFCXNBV9xwQRAblnyUaUODje62t3/22b/60btrl2GvtPh2MAoZ7GBjbR85WZFUJ2MvLVSyTWfVnB5bjsi2o4se+TN0xCtoZJCWQG9H6wYfXMrc9gY98in6zxxTI4qUENGV/1qQpURgpFd9aUVmA8biz53DA7In2oongImhCz6gDf+eZw2iaBjrtYqzPanMWvIKlCfTcfc71RqdHSpChcGUEmtq1fXmyoyqgAHd0xEoMq7sJR89IdQ+rGND5vXCbqvS8MhYpwNjlYRCMJWgMhcf4tK5diOHH9pIj+aIgfTq60E3K+uAz+bIqiTVB5N46kx"
-    ];
-  };
-}
--- a/nixops/extra-udev.nix
+++ b/nixops/extra-udev.nix
@ -1,11 +1,4 @@
 ''
-# leaf maple
-SUBSYSTEM=="usb", ATTRS{idVendor}=="1eaf", ATTRS{idProduct}=="0003", MODE="0660", GROUP="plugdev"
-SUBSYSTEM=="usb", ATTRS{idVendor}=="1eaf", ATTRS{idProduct}=="0004", MODE="0660", GROUP="plugdev"
-# STM32 devkit
-SUBSYSTEM=="usb", ATTRS{idVendor}=="0483", ATTRS{idProduct}=="374e", MODE="0660", GROUP="plugdev"
-# glasgow
-SUBSYSTEM=="usb", ATTRS{idVendor}=="20b7", ATTRS{idProduct}=="9db1", MODE="0660", GROUP="plugdev"
 # hackrf
 SUBSYSTEM=="usb", ATTRS{idVendor}=="1d50", ATTRS{idProduct}=="6089", MODE="0660", GROUP="plugdev"
 # bladerf
@ -25,6 +18,10 @@ SUBSYSTEM=="usb", ATTRS{idVendor}=="0483", ATTRS{idProduct}=="df11", MODE="0660"
 # Renkforce USB hub with power control
 SUBSYSTEM=="usb", ATTRS{idVendor}=="2109", ATTRS{idProduct}=="0812", MODE="0660", GROUP="plugdev"
 SUBSYSTEM=="usb", ATTRS{idVendor}=="2109", ATTRS{idProduct}=="2812", MODE="0660", GROUP="plugdev"
-# Shenzhen logic analyzer
+# LibreVNA
+SUBSYSTEM=="usb", ATTRS{idVendor}=="0483", ATTRS{idProduct}=="4121", MODE="0660", GROUP="plugdev"
+SUBSYSTEM=="usb", ATTRS{idVendor}=="1209", ATTRS{idProduct}=="4121", MODE="0660", GROUP="plugdev"
+# DSLogic
 SUBSYSTEM=="usb", ATTRS{idVendor}=="2a0e", ATTRS{idProduct}=="0020", MODE="0660", GROUP="plugdev"
+SUBSYSTEM=="usb", ATTRS{idVendor}=="2a0e", ATTRS{idProduct}=="0034", MODE="0660", GROUP="plugdev"
 ''
--- a/nixops/franz-hardware-configuration.nix
+++ b/nixops/franz-hardware-configuration.nix
@ -10,10 +10,10 @@

  boot.initrd.availableKernelModules = [ "xhci_pci" "thunderbolt" "ahci" "nvme" "usbhid" "usb_storage" "sd_mod" "rtsx_pci_sdmmc" ];
  boot.initrd.kernelModules = [ ];
-  boot.kernelPackages = pkgs.linuxPackages_5_15;
  boot.kernelModules = [ "kvm-intel" ];
  boot.blacklistedKernelModules = [ "iwlwifi" ];
  boot.extraModulePackages = [ ];
+  boot.kernelParams = ["intel_idle.max_cstate=1"];

  fileSystems."/" =
    { device = "/dev/disk/by-uuid/37e69920-a60d-4cb0-ae2f-b812f7a35dc8";
@ -23,6 +23,7 @@
  fileSystems."/boot" =
    { device = "/dev/disk/by-uuid/A33B-F001";
      fsType = "vfat";
+      options = [ "fmask=0022" "dmask=0022" ];
    };

  swapDevices = [ ];
@ -32,5 +33,7 @@
  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;

+  hardware.cpu.intel.updateMicrocode = true;
+
  system.stateVersion = "21.05";
 }
--- a/nixops/hera-hardware-configuration.nix
+++ b/nixops/hera-hardware-configuration.nix
@ -18,25 +18,18 @@
  fileSystems."/boot" =
    { device = "/dev/disk/by-uuid/8C30-F6DC";
      fsType = "vfat";
+      options = [ "fmask=0022" "dmask=0022" ];
    };

  swapDevices = [ ];

-  nix.maxJobs = lib.mkDefault 16;
+  nix.settings.max-jobs = lib.mkDefault 16;
  powerManagement.cpuFreqGovernor = lib.mkDefault "powersave";

  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;

-  virtualisation.libvirtd.allowedBridges = [ "virbr0" "br0" ];
-  networking.bridges = {
-    br0 = {
-      interfaces = [ "eno1" ];
-    };
-  };
-  networking.networkmanager.enable = false;
-  networking.useDHCP = false;
-  networking.interfaces.br0.useDHCP = true;
+  hardware.cpu.intel.updateMicrocode = true;

  system.stateVersion = "19.03";
 }
--- a/nixops/hestia-hardware-configuration.nix
+++ b/nixops/hestia-hardware-configuration.nix
@ -18,15 +18,18 @@
  fileSystems."/boot" =
    { device = "/dev/disk/by-uuid/E085-5F21";
      fsType = "vfat";
+      options = [ "fmask=0022" "dmask=0022" ];
    };

  swapDevices = [ ];

-  nix.maxJobs = lib.mkDefault 16;
+  nix.settings.max-jobs = lib.mkDefault 16;
  powerManagement.cpuFreqGovernor = lib.mkDefault "powersave";

  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;

+  hardware.cpu.intel.updateMicrocode = true;
+
  system.stateVersion = "19.03";
 }
--- a/nixops/juno-hardware-configuration.nix
+++ b/nixops/juno-hardware-configuration.nix
@ -1,32 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-{
-  imports =
-    [ <nixpkgs/nixos/modules/installer/scan/not-detected.nix>
-    ];
-
-  boot.initrd.availableKernelModules = [ "xhci_pci" "ehci_pci" "ahci" "usbhid" "usb_storage" "sd_mod" "sr_mod" ];
-  boot.initrd.kernelModules = [ ];
-  boot.kernelModules = [ "kvm-intel" ];
-  boot.extraModulePackages = [ ];
-
-  fileSystems."/" =
-    { device = "/dev/disk/by-uuid/62a38d9c-452c-4648-be12-6131e95b8276";
-      fsType = "ext4";
-    };
-
-  fileSystems."/boot" =
-    { device = "/dev/disk/by-uuid/88F6-46F2";
-      fsType = "vfat";
-    };
-
-  swapDevices = [ ];
-
-  nix.maxJobs = lib.mkDefault 8;
-  powerManagement.cpuFreqGovernor = lib.mkDefault "powersave";
-
-  boot.loader.systemd-boot.enable = true;
-  boot.loader.efi.canTouchEfiVariables = true;
-
-  system.stateVersion = "19.03";
-}
--- a/nixops/jupiter-hardware-configuration.nix
+++ b/nixops/jupiter-hardware-configuration.nix
@ -0,0 +1,43 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "xhci_pci" "thunderbolt" "ahci" "nvme" "usbhid" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-intel" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-uuid/315af039-6799-43ac-8999-7da69a6fbd1e";
+      fsType = "ext4";
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/45B7-790E";
+      fsType = "vfat";
+      options = [ "fmask=0022" "dmask=0022" ];
+    };
+
+  swapDevices = [ ];
+
+  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
+  # (the default) this is the recommended approach. When using systemd-networkd it's
+  # still possible to use this option, but it's recommended to use it in conjunction
+  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
+  networking.useDHCP = lib.mkDefault true;
+  # networking.interfaces.enp86s0.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  hardware.cpu.intel.updateMicrocode = true;
+  
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.efi.canTouchEfiVariables = true;
+  
+  system.stateVersion = "24.05";
+}
--- a/nixops/light.nix
+++ b/nixops/light.nix
@ -1,141 +0,0 @@
-{ host }:
-
-{ config, pkgs, ... }:
-let
-  m-labs = import (fetchTarball https://nixbld.m-labs.hk/channel/custom/artiq/full/artiq-full/nixexprs.tar.xz) { inherit pkgs; };
-in
-{
-  deployment.targetHost = host;
-  deployment.hasFastConnection = true;
-  nix.nixPath = [ "nixpkgs=${pkgs.path}" ];
-  programs.command-not-found.dbPath = "${pkgs.path}/programs.sqlite";
-
-  imports =
-    [
-      (./. + "/${host}-hardware-configuration.nix")
-    ];
-  nixpkgs.config.packageOverrides = super: let self = super.pkgs; in {
-    pam_p11 = super.pam_p11.overrideAttrs(oa: {
-      patchPhase = oa.patchPhase or "" + ''
-          substituteInPlace src/match_openssh.c --replace \
-            '"%s/.ssh/authorized_keys", pw->pw_dir)' \
-            '"/etc/ssh/authorized_keys.d/%s", pw->pw_name)'
-        '';
-    });
-  };
-
-  networking.hostName = host;
-
-  time.timeZone = "Asia/Hong_Kong";
-
-  # List packages installed in system profile. To search, run:
-  # $ nix search wget
-  documentation.enable = false;
-  nixpkgs.config.allowUnfree = true;
-  environment.systemPackages = with pkgs; [
-    opensc
-    wget vim git firefox usbutils pciutils file lm_sensors acpi
-    gimp imagemagick
-    evince
-    (python3.withPackages(ps: with ps; [ numpy scipy ]))
-    psmisc
-    telnet unzip zip gnupg
-    sublime3 rink
-    tmux screen tigervnc
-    any-nix-shell
-  ];
-  programs.wireshark.enable = true;
-
-  services.openssh.enable = true;
-  services.openssh.forwardX11 = true;
-  services.openssh.passwordAuthentication = false;
-  services.openssh.extraConfig =
-    ''
-    StreamLocalBindUnlink yes
-    '';
-  programs.mosh.enable = true;
-
-  services.pcscd.enable = true;
-  programs.ssh.extraConfig =
-    ''
-    PKCS11Provider "${pkgs.opensc}/lib/opensc-pkcs11.so"
-    '';
-  programs.ssh.startAgent = true;
-  programs.ssh.agentPKCS11Whitelist = "${pkgs.opensc}/lib/opensc-pkcs11.so";
-  security.pam.p11.enable = true;
-
-  # Enable CUPS to print documents.
-  services.printing = {
-    enable = true;
-    extraConf =
-      ''
-      Browsing Off
-      BrowseLocalProtocols none
-      '';
-    browsedConf =
-      ''
-      BrowseRemoteProtocols none
-      BrowseProtocols none
-      '';
-  };
-  services.avahi = {
-    enable = true;
-    nssmdns = true;
-  };
-
-  # Enable sound.
-  sound.enable = true;
-  hardware.pulseaudio = {
-    enable = true;
-    extraModules = [ pkgs.pulseaudio-modules-bt ];
-    package = pkgs.pulseaudioFull;
-  };
-
-  i18n.inputMethod = {
-    enabled = "fcitx";
-    fcitx.engines = with pkgs.fcitx-engines; [ table-extra m17n ];
-  };
-  fonts.fonts = [ pkgs.noto-fonts pkgs.noto-fonts-cjk pkgs.noto-fonts-emoji pkgs.noto-fonts-extra ];
-
-  # Enable the X11 windowing system.
-  services.xserver.enable = true;
-  services.xserver.layout = "us";
-  services.xserver.xkbOptions = "eurosign:e";
-
-  services.xserver.displayManager.lightdm.enable = true;
-  services.xserver.desktopManager.xfce.enable = true;
-
-  systemd.suppressedSystemUnits = [
-      "hibernate.target"
-      "suspend.target"
-      "suspend-then-hibernate.target"
-      "sleep.target"
-      "hybrid-sleep.target"
-      "systemd-hibernate.service"
-      "systemd-hybrid-sleep.service"
-      "systemd-suspend.service"
-      "systemd-suspend-then-hibernate.service"
-  ];
-
-  programs.fish.enable = true;
-  programs.fish.promptInit = ''
-    any-nix-shell fish --info-right | source
-  '';
-  users.mutableUsers = false;
-  users.defaultUserShell = pkgs.fish;
-  users.extraGroups.plugdev = { };
-  users.extraUsers = import ./common-users.nix { inherit pkgs; };
-  
-  security.sudo.wheelNeedsPassword = false;
-  services.udev.packages = [ m-labs.openocd ];
-  services.udev.extraRules = (import ./extra-udev.nix);
-
-  nix.binaryCachePublicKeys = ["nixbld.m-labs.hk-1:5aSRVA5b320xbNvu30tqxVPXpld73bhtOeH6uAjRyHc="];
-  nix.binaryCaches = ["https://nixbld.m-labs.hk" "https://cache.nixos.org"];
-  nix.sandboxPaths = ["/opt"];
-
-  nix.package = pkgs.nix_2_4;
-  nix.extraOptions = ''
-    experimental-features = nix-command flakes
-  '';
-}
--- a/nixops/nixops.nix
+++ b/nixops/nixops.nix
@ -6,16 +6,17 @@
  network.enableRollback = true;

  rpi-1 = import ./rpi.nix { host = "rpi-1"; rpi4 = true; };
-  rpi-2 = import ./rpi.nix { host = "rpi-2"; rpi4 = false; experimental-users = true; };
-  rpi-3 = import ./rpi.nix { host = "rpi-3"; rpi4 = true; };
  rpi-4 = import ./rpi.nix { host = "rpi-4"; rpi4 = true; };
-  rpi-ext = import ./rpi-server.nix { host = "rpi-ext"; rpi4 = true; };
-  juno = import ./desktop.nix { host = "juno"; };
  zeus = import ./desktop.nix { host = "zeus"; };
  hera = import ./desktop.nix { host = "hera"; };
  hestia = import ./desktop.nix { host = "hestia"; };
  chiron = import ./desktop.nix { host = "chiron"; };
  old-nixbld = import ./desktop.nix { host = "old-nixbld"; };
  franz = import ./desktop.nix { host = "franz"; };
-  cnc = import ./light.nix { host = "cnc"; };
+  demeter = import ./desktop.nix { host = "demeter"; };
+  vulcan = import ./desktop.nix { host = "vulcan"; };
+  rc = import ./desktop.nix { host = "rc"; };
+  athena = import ./desktop.nix { host = "athena"; };
+  jupiter = import ./desktop.nix { host = "jupiter"; };
+  saturn = import ./desktop.nix { host = "saturn"; };
 }
--- a/nixops/old-nixbld-hardware-configuration.nix
+++ b/nixops/old-nixbld-hardware-configuration.nix
@ -8,34 +8,27 @@
    [ <nixpkgs/nixos/modules/installer/scan/not-detected.nix>
    ];

-  boot.initrd.availableKernelModules = [ "xhci_pci" "ahci" "nvme" "usb_storage" "usbhid" "sd_mod" ];
+  boot.initrd.availableKernelModules = [ "nvme" "xhci_pci" "ahci" "usbhid" ];
  boot.initrd.kernelModules = [ ];
-  boot.kernelModules = [ "kvm-intel" ];
+  boot.kernelModules = [ "kvm-amd" ];
  boot.extraModulePackages = [ ];

  fileSystems."/" =
-    { device = "/dev/disk/by-uuid/e8aa18dc-70de-440c-885f-652a123acb15";
+    { device = "/dev/disk/by-uuid/69b15848-1cfc-4e3e-91de-1df0d2fc7a80";
      fsType = "ext4";
    };

  fileSystems."/boot" =
-    { device = "/dev/disk/by-uuid/19DD-B26F";
+    { device = "/dev/disk/by-uuid/D0A3-DDAE";
      fsType = "vfat";
+      options = [ "fmask=0022" "dmask=0022" ];
    };

-  swapDevices =
-    [ { device = "/dev/disk/by-uuid/86b091d2-9e61-4938-bcd9-6417e69a98b3"; }
-    ];
-
-  nix.maxJobs = lib.mkDefault 12;
  powerManagement.cpuFreqGovernor = lib.mkDefault "powersave";
+  hardware.cpu.amd.updateMicrocode = true;

  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;

-  hardware.nvidia.package = config.boot.kernelPackages.nvidiaPackages.legacy_470;
-  services.xserver.videoDrivers = [ "nvidia" ];
-  services.xserver.displayManager.gdm.wayland = false;
-
-  system.stateVersion = "19.03";
+  system.stateVersion = "22.05";
 }
--- a/nixops/rc-hardware-configuration.nix
+++ b/nixops/rc-hardware-configuration.nix
@ -0,0 +1,50 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "xhci_pci" "ahci" "usbhid" "sd_mod" "rtsx_usb_sdmmc" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-intel" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-uuid/348c924c-1d86-44ff-84af-2594f414e7d0";
+      fsType = "ext4";
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/1BDC-44BB";
+      fsType = "vfat";
+      options = [ "fmask=0022" "dmask=0022" ];
+    };
+
+  fileSystems."/opt" =
+    { device = "/dev/disk/by-uuid/cf0f51b6-7b95-4c74-9390-37dc4c86f32b";
+      fsType = "ext4";
+    };
+
+  swapDevices = [ ];
+
+  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
+  # (the default) this is the recommended approach. When using systemd-networkd it's
+  # still possible to use this option, but it's recommended to use it in conjunction
+  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
+  networking.useDHCP = lib.mkDefault true;
+  # networking.interfaces.enp1s0.useDHCP = lib.mkDefault true;
+  # networking.interfaces.wlp2s0.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.efi.canTouchEfiVariables = true;
+
+  hardware.cpu.intel.updateMicrocode = true;
+
+  system.stateVersion = "23.11";
+}
--- a/nixops/rpi-server.nix
+++ b/nixops/rpi-server.nix
@ -1,153 +0,0 @@
-{ host, rpi4 }:
-
-{ config, pkgs, ... }:
-{
-  deployment.targetHost = host;
-  deployment.hasFastConnection = true;
-  nix.nixPath = [ "nixpkgs=${pkgs.path}" ];
-  programs.command-not-found.dbPath = "${pkgs.path}/programs.sqlite";
-  nixpkgs.system = "aarch64-linux";
-
-  boot.loader.grub.enable = false;
-  boot.loader.generic-extlinux-compatible.enable = true;
-  boot.loader.raspberryPi = pkgs.lib.mkIf rpi4 {
-    enable = true;
-    version = 4;
-  };
-  boot.kernelParams = ["cma=64M"]; # work around https://github.com/raspberrypi/linux/issues/3208
-  boot.kernelPackages = if rpi4 then pkgs.linuxPackages_rpi4 else pkgs.linuxPackages_rpi3;
-  boot.initrd.includeDefaultModules = false;
-
-  # work around https://github.com/NixOS/nixpkgs/issues/125354
-  disabledModules = [ "hardware/device-tree.nix" ];
-  imports = [ ./device-tree-module.nix ];
-  nixpkgs.config.packageOverrides = super: let self = super.pkgs; in {
-    deviceTree = super.callPackage ./device-tree-pkg.nix {};
-  };
-  hardware.deviceTree.enable = true;
-  hardware.deviceTree.base = pkgs.device-tree_rpi;
-  hardware.deviceTree.overlays = [ "${pkgs.device-tree_rpi.overlays}/rpi-poe.dtbo" ];
-
-
-  fileSystems = {
-    "/" = {
-      device = "/dev/disk/by-label/NIXOS_SD";
-      fsType = "ext4";
-    };
-  };
-
-  services.openssh.enable = true;
-  services.openssh.passwordAuthentication = false;
-  services.openssh.extraConfig =
-    ''
-    StreamLocalBindUnlink yes
-    '';
-  programs.mosh.enable = true;
-
-  networking.hostName = host;
-  time.timeZone = "Asia/Hong_Kong";
-
-  hardware.enableRedistributableFirmware = true;
-  services.hostapd = {
-    enable        = true;
-    interface     = "wlan0";
-    hwMode        = "g";
-    ssid          = "M-Labs-ext";
-    wpaPassphrase = (import /etc/nixos/secret/wifi_ext_password.nix);
-    extraConfig   = ''
-      ieee80211d=1
-      country_code=HK
-      ieee80211n=1
-      wmm_enabled=1
-      auth_algs=1
-      wpa_key_mgmt=WPA-PSK
-      rsn_pairwise=CCMP
-    '';
-  };
-  networking.interfaces.eth0 = {
-    ipv4.addresses = [{
-      address = "192.168.1.30";
-      prefixLength = 24;
-    }];
-    ipv6.addresses = [{
-      address = "2001:470:f821:1:dea6:32ff:fe95:2fcf";
-      prefixLength = 64;
-    }];
-    ipv4.routes = [{
-      address = "0.0.0.0";
-      prefixLength = 0;
-      via = "192.168.1.1";
-    }];
-    ipv6.routes = [{
-      address = "::";
-      prefixLength = 0;
-      via = "fe80::523e:aaff:fe0c:e49d";
-    }];
-  };
-  networking.interfaces.wlan0 = {
-    ipv4.addresses = [{
-      address = "192.168.13.1";
-      prefixLength = 24;
-    }];
-    ipv6.addresses = [{
-      address = "2001:470:f821:3::";
-      prefixLength = 64;
-    }];
-  };
-  services.dnsmasq = {
-    enable = true;
-    servers = ["192.168.1.1#53"];
-    extraConfig = ''
-      interface=wlan0
-      bind-interfaces
-      dhcp-range=192.168.13.10,192.168.13.254,24h
-      enable-ra
-      dhcp-range=::,constructor:wlan0,ra-only
-      no-resolv
-    '';
-  };
-  boot.kernel.sysctl."net.ipv4.ip_forward" = 1;
-  boot.kernel.sysctl."net.ipv6.conf.all.forwarding" = "1";
-  boot.kernel.sysctl."net.ipv6.conf.default.forwarding" = "1";
-
-  users.extraGroups.plugdev = { };
-  users.mutableUsers = false;
-  users.defaultUserShell = pkgs.fish;
-  users.extraUsers = import ./common-users.nix { inherit pkgs; };
-  security.sudo.wheelNeedsPassword = false;
-  services.udev.extraRules = (import ./extra-udev.nix);
-
-  documentation.enable = false;
-  environment.systemPackages = with pkgs; [
-    psmisc wget vim git sshfs usbutils lm_sensors file telnet mosh tmux
-    imagemagick
-  ];
-  programs.fish.enable = true;
-
-  services.avahi.enable = true;
-  services.avahi.publish.enable = true;
-  services.avahi.publish.userServices = true;
-  services.printing.enable = true;
-  services.printing.drivers = [ pkgs.hplip ];
-  services.printing.browsing = true;
-  services.printing.listenAddresses = [ "192.168.1.30:631" "192.168.13.1:631" ];
-  services.printing.defaultShared = true;
-  hardware.sane.enable = true;
-  hardware.sane.extraBackends = [ pkgs.hplip ];
-  systemd.sockets.cups.wants = [ "network-setup.service" ];
-  systemd.sockets.cups.after = [ "network-setup.service" ];
-  systemd.sockets.cups.wantedBy = [ "multi-user.target" ];
-  systemd.services.cups.wantedBy = [ "multi-user.target" ];
-
-  networking.firewall.allowedTCPPorts = [ 631 ];
-  networking.firewall.interfaces.wlan0.allowedUDPPorts = [ 53 67 ];
-
-  nix.binaryCachePublicKeys = ["nixbld.m-labs.hk-1:5aSRVA5b320xbNvu30tqxVPXpld73bhtOeH6uAjRyHc="];
-  nix.binaryCaches = ["https://cache.nixos.org" "https://nixbld.m-labs.hk"];
-  nix.trustedUsers = ["root" "nix"];
-
-  nix.package = pkgs.nix_2_4;
-  nix.extraOptions = ''
-    experimental-features = nix-command flakes
-  '';
-}
--- a/nixops/rpi.nix
+++ b/nixops/rpi.nix
@ -2,7 +2,7 @@

 { config, pkgs, ... }:
 let
-  m-labs = import (fetchTarball https://nixbld.m-labs.hk/channel/custom/artiq/full/artiq-full/nixexprs.tar.xz) { inherit pkgs; };
+  artiq = builtins.getFlake git+https://github.com/m-labs/artiq.git;
 in
 {
  deployment.targetHost = host;
@ -14,20 +14,8 @@ in
  boot.loader.grub.enable = false;
  boot.loader.generic-extlinux-compatible.enable = true;
  boot.kernelParams = if rpi4 then ["cma=64M"] else []; # work around https://github.com/raspberrypi/linux/issues/3208
-  boot.kernelPackages = if rpi4 then pkgs.linuxPackages_rpi4 else pkgs.linuxPackages_rpi3;
  boot.initrd.includeDefaultModules = false;

-  # work around https://github.com/NixOS/nixpkgs/issues/125354
-  disabledModules = [ "hardware/device-tree.nix" ];
-  imports = [ ./device-tree-module.nix ];
-  nixpkgs.config.packageOverrides = super: let self = super.pkgs; in {
-    deviceTree = super.callPackage ./device-tree-pkg.nix {};
-  };
-  hardware.deviceTree.enable = true;
-  hardware.deviceTree.base = pkgs.device-tree_rpi;
-  hardware.deviceTree.overlays = [ "${pkgs.device-tree_rpi.overlays}/rpi-poe.dtbo" ];
-
-
  fileSystems = {
    "/" = {
      device = "/dev/disk/by-label/NIXOS_SD";
@ -36,8 +24,9 @@ in
  };

  services.openssh.enable = true;
-  services.openssh.passwordAuthentication = false;
-  services.openssh.gatewayPorts = "clientspecified";
+  services.openssh.authorizedKeysInHomedir = false;
+  services.openssh.settings.PasswordAuthentication = false;
+  services.openssh.settings.GatewayPorts = "clientspecified";
  services.openssh.extraConfig =
    ''
    StreamLocalBindUnlink yes
@ -46,18 +35,12 @@ in

  networking.hostName = host;

-  networking.firewall.allowedTCPPorts = if host == "rpi-2" then [ 6000 ] else [];
-
  time.timeZone = "Asia/Hong_Kong";

  users.extraGroups.plugdev = { };
  users.mutableUsers = false;
  users.defaultUserShell = pkgs.fish;
-  users.extraUsers = (import ./common-users.nix { inherit pkgs; }) //
-    (pkgs.lib.optionalAttrs experimental-users (import ./experimental-users.nix { inherit pkgs; })) // {
-    nix = {
-      isNormalUser = true;
-    };
+  users.extraUsers = (import ./common-users.nix { inherit pkgs; }) // {
    nixbld = {
      isNormalUser = true;
      extraGroups = ["plugdev" "dialout"];
@ -67,22 +50,25 @@ in
    };
  };
  security.sudo.wheelNeedsPassword = false;
-  services.udev.packages = [ m-labs.openocd ];
+  services.udev.packages = [ artiq.packages.aarch64-linux.openocd-bscanspi ];
  services.udev.extraRules = (import ./extra-udev.nix);

  documentation.enable = false;
  environment.systemPackages = with pkgs; [
-    psmisc wget vim git sshfs usbutils uhubctl lm_sensors file telnet mosh tmux xc3sprog m-labs.openocd screen gdb minicom picocom
+    psmisc wget vim git sshfs usbutils uhubctl lm_sensors file mosh tmux
+    artiq.packages.aarch64-linux.openocd-bscanspi
+    xc3sprog
+    screen gdb minicom picocom
  ];
+  programs.zsh.enable = true;
  programs.fish.enable = true;
  programs.wireshark.enable = true;

-  nix.binaryCachePublicKeys = ["nixbld.m-labs.hk-1:5aSRVA5b320xbNvu30tqxVPXpld73bhtOeH6uAjRyHc="];
-  nix.binaryCaches = ["https://cache.nixos.org" "https://nixbld.m-labs.hk"];
-  nix.trustedUsers = ["root" "nix" "sb"];
+  nix.settings.trusted-public-keys = ["nixbld.m-labs.hk-1:5aSRVA5b320xbNvu30tqxVPXpld73bhtOeH6uAjRyHc="];
+  nix.settings.substituters = ["https://nixbld.m-labs.hk?priority=10"];
+  nix.settings.trusted-users = ["root" "sb"];

-  nix.package = pkgs.nix_2_4;
  nix.extraOptions = ''
-    experimental-features = nix-command flakes
+    experimental-features = nix-command flakes impure-derivations
  '';
 }
--- a/nixops/saturn-hardware-configuration.nix
+++ b/nixops/saturn-hardware-configuration.nix
@ -0,0 +1,43 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "xhci_pci" "thunderbolt" "ahci" "nvme" "usbhid" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-intel" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-uuid/51d521ec-4807-4b71-8a89-116b89f72d2e";
+      fsType = "ext4";
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/877D-AF6A";
+      fsType = "vfat";
+      options = [ "fmask=0022" "dmask=0022" ];
+    };
+
+  swapDevices = [ ];
+
+  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
+  # (the default) this is the recommended approach. When using systemd-networkd it's
+  # still possible to use this option, but it's recommended to use it in conjunction
+  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
+  networking.useDHCP = lib.mkDefault true;
+  # networking.interfaces.enp86s0.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  hardware.cpu.intel.updateMicrocode = true;
+  
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.efi.canTouchEfiVariables = true;
+  
+  system.stateVersion = "24.05";
+}
--- a/nixops/vulcan-hardware-configuration.nix
+++ b/nixops/vulcan-hardware-configuration.nix
@ -0,0 +1,41 @@
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "xhci_pci" "ahci" "nvme" "usbhid" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-intel" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-uuid/67168ae0-6448-4b40-b278-406290224b4f";
+      fsType = "ext4";
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/8F4B-AD84";
+      fsType = "vfat";
+      options = [ "fmask=0022" "dmask=0022" ];
+    };
+
+  swapDevices = [ ];
+
+  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
+  # (the default) this is the recommended approach. When using systemd-networkd it's
+  # still possible to use this option, but it's recommended to use it in conjunction
+  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
+  networking.useDHCP = lib.mkDefault true;
+  # networking.interfaces.eno1.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.efi.canTouchEfiVariables = true;
+
+  hardware.cpu.intel.updateMicrocode = true;
+  
+  system.stateVersion = "23.05";
+}
--- a/nixops/zeus-hardware-configuration.nix
+++ b/nixops/zeus-hardware-configuration.nix
@ -18,15 +18,18 @@
  fileSystems."/boot" =
    { device = "/dev/disk/by-uuid/91B4-E546";
      fsType = "vfat";
+      options = [ "fmask=0022" "dmask=0022" ];
    };

  swapDevices = [ ];

-  nix.maxJobs = lib.mkDefault 16;
+  nix.settings.max-jobs = lib.mkDefault 16;
  powerManagement.cpuFreqGovernor = lib.mkDefault "powersave";

  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;

+  hardware.cpu.intel.updateMicrocode = true;
+
  system.stateVersion = "19.03";
 }
--- a/remote-ipsec.txt
+++ b/remote-ipsec.txt
@ -0,0 +1,49 @@
+connections {
+  bypass-ipsec {
+    remote_addrs = 127.0.0.1
+    children {
+      bypass-isakmp-v4 {
+        local_ts = 0.0.0.0/0[udp/isakmp]
+        remote_ts = 0.0.0.0/0[udp/isakmp]
+        mode = pass
+        start_action = trap
+      }
+      bypass-isakmp-v6 {
+        local_ts = ::/0[udp/isakmp]
+        remote_ts = ::/0[udp/isakmp]
+        mode = pass
+        start_action = trap
+      }
+    }
+  }
+  m_labs {
+    version = 2
+    encap = no
+    mobike = no
+    send_certreq = no
+    proposals = aes128gcm128-sha256-prfsha256-curve25519,aes128gcm128-sha256-prfsha256-ecp256
+    local_addrs = 103.206.98.1
+    remote_addrs = 94.190.212.123
+    local {
+      auth = pubkey
+      id = fqdn:igw0.hkg.as150788.net
+      pubkeys = igw0.hkg.as150788.net
+    }
+    remote {
+      auth = pubkey
+      id = fqdn:m-labs.hk
+      pubkeys = m-labs.hk
+    }
+    children {
+      con1 {
+        mode = transport
+        ah_proposals = sha256-curve25519,sha256-ecp256
+        esp_proposals =
+        local_ts = 103.206.98.1[gre]
+        remote_ts = 94.190.212.123[gre]
+        start_action = none
+        close_action = none
+      }
+    }
+  }
+}
--- a/vlan-settings-1.png
+++ b/vlan-settings-1.png
--- a/vlan-settings-2.png
+++ b/vlan-settings-2.png
--- a/vlan-settings-3.png
+++ b/vlan-settings-3.png