Force SSL for main website instead of optional SSL

https://nixos.wiki/wiki/Nginx Signed-off-by: Egor Savkin <es@m-labs.hk>
2024-01-25 15:51:33 +08:00
45 changed files with 223 additions and 10884 deletions
--- a/m-labs-intl/60-tunnels.yaml
+++ b/m-labs-intl/60-tunnels.yaml
@ -1,18 +0,0 @@
-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
@ -1,14 +0,0 @@
-[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
@ -1,10 +0,0 @@
-#!/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
@ -1,10 +0,0 @@
-#!/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
@ -1,81 +0,0 @@
-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
@ -1,34 +0,0 @@
-
-
-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
@ -1,65 +0,0 @@
-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
@ -1,12 +0,0 @@
-[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
@ -1,14 +0,0 @@
-#!/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
@ -1,99 +0,0 @@
-# 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
@ -10,34 +10,16 @@ in
      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 ${toString config.services.afws.logBackupCount}
-        '';
+        ExecStart = "${afws}/bin/afws_server";
        ExecReload = "${pkgs.coreutils}/bin/kill -USR1 $MAINPID";
      };
      path = [ pkgs.nix pkgs.git ];
--- a/nixbld-etc-nixos/backup-module.nix
+++ b/nixbld-etc-nixos/backup-module.nix
@ -26,10 +26,9 @@ let
    ${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

    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.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 | \
        ${pkgs.bzip2}/bin/bzip2 | \
        ${pkgs.gnupg}/bin/gpg --symmetric --batch --passphrase-fd 6
  '';
--- a/nixbld-etc-nixos/configuration.nix
+++ b/nixbld-etc-nixos/configuration.nix
@ -1,14 +1,14 @@
+# Edit this configuration file to define what should be installed on
+# your system.  Help is available in the configuration.nix(5) man page
+# and in the NixOS manual (accessible by running ‘nixos-help’).
+
 { config, pkgs, ... }:

 let
  netifWan = "enp4s0";
-  netifWanBackup = "enp11s0";
  netifLan = "enp5s0f1";
  netifWifi = "wlp6s0";
  netifSit = "henet0";
-  netifUSA = "trump0";
-  netifAlt = "alt0";
-  netifAltVlan = "vlan0";
  hydraWwwOutputs = "/var/www/hydra-outputs";
 in
 {
@ -20,8 +20,8 @@ in
      ./afws-module.nix
      ./rt.nix
      (builtins.fetchTarball {
-        url = "https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/archive/29916981e7b3b5782dc5085ad18490113f8ff63b/nixos-mailserver-nixos.tar.gz";
-        sha256 = "sha256:0clvw4622mqzk1aqw1qn6shl9pai097q62mq1ibzscnjayhp278b";
+        url = "https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/archive/008d78cc21959e33d0d31f375b88353a7d7121ae/nixos-mailserver-nixos.tar.gz";
+        sha256 = "sha256:0pnfyg4icsvrw390a227m8b1j5w8awicx5aza3d0fiyyzpnrpn5a";
      })
    ];

@ -31,7 +31,7 @@ in
  boot.loader.grub.efiSupport = true;
  boot.loader.efi.canTouchEfiVariables = true;
  hardware.cpu.amd.updateMicrocode = true;
-  boot.supportedFilesystems.zfs = true;
+  boot.supportedFilesystems = ["zfs"];
  boot.kernelParams = ["zfs.l2arc_write_max=536870912"];
  boot.binfmt.emulatedSystems = [ "armv7l-linux" "aarch64-linux" ];

@ -90,35 +90,11 @@ in
    hostName = "nixbld";
    hostId = "e423f012";
    firewall = {
-      allowedTCPPorts = [ 53 80 443 2222 7402 ];
+      allowedTCPPorts = [ 53 80 443 7402 ];
      allowedUDPPorts = [ 53 67 500 4500 ];
      trustedInterfaces = [ netifLan ];
-      logRefusedConnections = false;
-      extraCommands = ''
-        iptables -A INPUT -s 5.78.86.156 -p gre -j ACCEPT
-        iptables -A INPUT -s 5.78.86.156 -p ah -j ACCEPT
-      '';
-      extraStopCommands = ''
-        iptables -D INPUT -s 5.78.86.156 -p gre -j ACCEPT
-        iptables -D INPUT -s 5.78.86.156 -p ah -j ACCEPT
-      '';
-    };
-    useDHCP = false;
-    interfaces."${netifWan}".useDHCP = true;  # PCCW - always wants active DHCP lease or cuts you off
-    interfaces."${netifWanBackup}" = {        # HKBN - no DHCP with static IP service
-      ipv4.addresses = [{
-        address = "202.77.7.238";
-        prefixLength = 30;
-      }];
-      ipv4.routes = [
-        {
-          address = "0.0.0.0";
-          prefixLength = 0;
-          via = "202.77.7.237";
-          options.table = "2";
-        }
-      ];
    };
+    interfaces."${netifWan}".useDHCP = true;
    interfaces."${netifLan}" = {
      ipv4.addresses = [{
        address = "192.168.1.1";
@ -136,11 +112,6 @@ in
          prefixLength = 24;
          options.table = "1";
        }
-        {
-          address = "192.168.1.0";
-          prefixLength = 24;
-          options.table = "2";
-        }
      ];
    };
    interfaces."${netifWifi}" = {
@ -152,19 +123,6 @@ in
        address = "2001:470:f891:2::";
        prefixLength = 64;
      }];
-      # same hack as above
-      ipv4.routes = [
-        {
-          address = "192.168.12.0";
-          prefixLength = 24;
-          options.table = "1";
-        }
-        {
-          address = "192.168.12.0";
-          prefixLength = 24;
-          options.table = "2";
-        }
-      ];
    };
    nat = {
      enable = true;
@ -177,6 +135,11 @@ in
        { sourcePort = 2204; destination = "192.168.1.204:22"; proto = "tcp"; }
      ];
      extraCommands = ''
+        iptables -w -N block-lan-from-wifi
+        iptables -w -A block-lan-from-wifi -i ${netifLan} -o ${netifWifi} -j DROP
+        iptables -w -A block-lan-from-wifi -i ${netifWifi} -o ${netifLan} -j DROP
+        iptables -w -A FORWARD -j block-lan-from-wifi
+
        iptables -w -N block-insecure-devices
        iptables -w -A block-insecure-devices -m mac --mac-source 00:20:0c:6c:ee:ba -j DROP  # keysight SA
        iptables -w -A block-insecure-devices -m mac --mac-source 74:5b:c5:20:c1:5f -j DROP  # siglent scope
@ -188,21 +151,15 @@ in
        iptables -w -A block-insecure-devices -m mac --mac-source d8:9c:67:ab:83:e7 -j DROP  # HP printer, wifi
        iptables -w -A block-insecure-devices -m mac --mac-source f4:39:09:f7:3c:d7 -j DROP  # HP printer, ethernet
        iptables -w -A FORWARD -j block-insecure-devices
-
-        iptables -w -N pccw-sucks
-        iptables -A pccw-sucks -o ${netifSit} -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --set-mss 1440
-        iptables -A pccw-sucks -o ${netifAlt} -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --set-mss 1380
-        iptables -A pccw-sucks -o ${netifUSA} -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --set-mss 1380
-        iptables -w -A FORWARD -j pccw-sucks
      '';
      extraStopCommands = ''
+        iptables -w -D FORWARD -j block-lan-from-wifi 2>/dev/null|| true
+        iptables -w -F block-lan-from-wifi 2>/dev/null|| true
+        iptables -w -X block-lan-from-wifi 2>/dev/null|| true
+
        iptables -w -D FORWARD -j block-insecure-devices 2>/dev/null|| true
        iptables -w -F block-insecure-devices 2>/dev/null|| true
        iptables -w -X block-insecure-devices 2>/dev/null|| true
-
-        iptables -w -D FORWARD -j pccw-sucks 2>/dev/null|| true
-        iptables -w -F pccw-sucks 2>/dev/null|| true
-        iptables -w -X pccw-sucks 2>/dev/null|| true
      '';
    };
    sits."${netifSit}" = {
@ -215,37 +172,14 @@ in
      addresses = [{ address = "2001:470:18:390::2"; prefixLength = 64; }];
      routes = [{ address = "::"; prefixLength = 0; }];
    };
-    greTunnels."${netifUSA}" = {
-      dev = netifWan;
-      remote = "5.78.86.156";
-      local = "94.190.212.123";
-      ttl = 255;
-      type = "tun";
-    };
-    greTunnels."${netifAlt}" = {
+    greTunnels.alt0 = {
      dev = netifWan;
      remote = "103.206.98.1";
      local = "94.190.212.123";
      ttl = 255;
      type = "tun";
    };
-    interfaces."${netifUSA}" = {
-      ipv4.addresses = [
-        {
-          address = "10.47.3.1";
-          prefixLength = 31;
-        }
-      ];
-      ipv4.routes = [
-        {
-          address = "0.0.0.0";
-          prefixLength = 0;
-          via = "10.47.3.0";
-          options.table = "3";
-        }
-      ];
-    };
-    interfaces."${netifAlt}" = {
+    interfaces.alt0 = {
      ipv4.addresses = [
        {
          address = "103.206.98.227";
@ -262,12 +196,12 @@ in
      ];
    };
    vlans = {
-      "${netifAltVlan}" = {
+      vlan0 = {
        id = 2;
        interface = netifLan;
      };
    };
-    interfaces."${netifAltVlan}" = {
+    interfaces.vlan0 = {
      ipv4.addresses = [{
        address = "103.206.98.200";
        prefixLength = 29;
@ -300,7 +234,7 @@ in
      id = "fqdn:igw0.hkg.as150788.net";
      pubkeys = [ "/etc/swanctl/pubkey/igw0.hkg.as150788.net" ];
    };
-    children."${netifAlt}" = {
+    children.alt0 = {
      mode = "transport";
      ah_proposals = [ "sha256-curve25519" ];
      remote_ts = [ "103.206.98.1[gre]" ];
@ -308,52 +242,13 @@ in
      start_action = "start";
    };
  };
-  services.strongswan-swanctl.swanctl.connections.usa = {
-    local_addrs = [ "94.190.212.123" ];
-    remote_addrs = [ "5.78.86.156" ];
-    local.main = {
-      auth = "pubkey";
-      id = "fqdn:m-labs.hk";
-      pubkeys = [ "/etc/swanctl/pubkey/m-labs.hk" ];
-    };
-    remote.main = {
-      auth = "pubkey";
-      id = "fqdn:m-labs-intl.com";
-      pubkeys = [ "/etc/swanctl/pubkey/m-labs-intl.com" ];
-    };
-    children."${netifUSA}" = {
-      mode = "transport";
-      ah_proposals = [ "sha256-curve25519" ];
-      remote_ts = [ "5.78.86.156[gre]" ];
-      local_ts = [ "94.190.212.123[gre]" ];
-      start_action = "start";
-    };
-  };

-  systemd.services.network-custom-route-backup = {
+  systemd.services.custom-network-setup = {
    wantedBy = [ "network.target" ];
    serviceConfig = {
      Type = "oneshot";
      RemainAfterExit = true;
-      ExecStart = "${pkgs.iproute2}/bin/ip rule add from 202.77.7.238/30 table 2";
-      ExecStop = "${pkgs.iproute2}/bin/ip rule del table 2";
-    };
-  };
-  systemd.services.network-custom-route-usa = {
-    wantedBy = [ "network.target" ];
-    serviceConfig = {
-      Type = "oneshot";
-      RemainAfterExit = true;
-      ExecStart = "${pkgs.iproute2}/bin/ip rule add from 10.47.3.0/31 table 3";
-      ExecStop = "${pkgs.iproute2}/bin/ip rule del table 3";
-    };
-  };
-  systemd.services.network-custom-route-alt = {
-    wantedBy = [ "network.target" ];
-    serviceConfig = {
-      Type = "oneshot";
-      RemainAfterExit = true;
-      ExecStart = "${pkgs.iproute2}/bin/ip rule add from 103.206.98.200/29 table 1";
+      ExecStart = "${pkgs.iproute2}/bin/ip rule add from 103.206.98.0/24 table 1";
      ExecStop = "${pkgs.iproute2}/bin/ip rule del table 1";
    };
  };
@ -381,13 +276,11 @@ in
           also-notify {
             213.239.220.50;  # ns1.qnetp.net
             216.218.130.2;   # ns1.he.net
-             88.198.32.245;   # new qnetp
           };
           '';
        slaves = [
          "213.239.220.50" "2a01:4f8:a0:7041::1"  # ns1.qnetp.net
          "216.218.133.2" "2001:470:600::2"       # slave.dns.he.net
-          "88.198.32.245"                         # new qnetp
        ];
      };
      "m-labs.ph" = {
@ -439,27 +332,6 @@ in
          "216.218.133.2" "2001:470:600::2"       # slave.dns.he.net
        ];
      };
-      "m-labs-intl.com" = {
-        name = "m-labs-intl.com";
-        master = true;
-        file = "/etc/nixos/named/m-labs-intl.com";
-        extraConfig =
-           ''
-           dnssec-policy "default";
-           inline-signing yes;
-           notify explicit;
-           also-notify {
-             216.218.130.2;   # ns1.he.net
-             213.239.220.50;  # ns1.qnetp.net
-             88.198.32.245;   # new qnetp
-           };
-           '';
-        slaves = [
-          "216.218.133.2" "2001:470:600::2"       # slave.dns.he.net
-          "213.239.220.50" "2a01:4f8:a0:7041::1"  # ns1.qnetp.net
-          "88.198.32.245"                         # new qnetp
-        ];
-      };
      "200-29.98.206.103.in-addr.arpa" = {
        name = "200-29.98.206.103.in-addr.arpa";
        master = true;
@ -540,6 +412,11 @@ in
        "/kasli/192.168.1.70"
        "/kasli-customer/192.168.1.75"
        "/stabilizer-customer/192.168.1.76"
+
+        # Google can't do DNS geolocation correctly and slows down websites of everyone using
+        # their shitty font cloud hosting. In HK, you sometimes get IPs behind the GFW that you
+        # cannot reach.
+        "/fonts.googleapis.com/142.250.207.74"
      ];

      dhcp-match = "set:ipxe,175"; # https://forum.ipxe.org/showthread.php?tid=6077
@ -565,23 +442,10 @@ in
  # List packages installed in system profile. To search, run:
  # $ nix search wget
  environment.systemPackages = with pkgs; [
-    lm_sensors
-    acpi
-    usbutils
-    pciutils
+    wget vim git file lm_sensors acpi pciutils psmisc nixopsUnstable
+    irssi tmux usbutils imagemagick jq zip unzip
    iw
    nvme-cli
-    smartmontools
-    psmisc
-
-    wget
-    vim
-    git
-    file
-    imagemagick
-    jq
-
-    nixops_unstable_minimal
    borgbackup
    bind
    waypipe
@ -608,10 +472,7 @@ in
  services.openssh.enable = true;
  services.openssh.settings.PasswordAuthentication = false;
  services.openssh.settings.GatewayPorts = "clientspecified";
-  services.openssh.settings.X11Forwarding = true;
-  services.openssh.authorizedKeysInHomedir = false;
  programs.mosh.enable = true;
-  programs.tmux.enable = true;

  programs.fish.enable = true;
  programs.zsh.enable = true;
@ -638,97 +499,76 @@ in
    SUBSYSTEM=="usb", ATTRS{idVendor}=="07cf", ATTRS{idProduct}=="4204", MODE="0660", GROUP="lp"
    '';

-  sound.enable = true;
-  services.mpd.enable = true;
-  services.mpd.musicDirectory = "/tank/sb-public/FLAC";
-  services.mpd.network.listenAddress = "192.168.1.1";
-  services.mpd.extraConfig =
-    ''
-    audio_output_format "192000:24:2"
-    audio_output {
-      type "alsa"
-      name "alsa"
-      device "hw:1,1"
-    }
-    '';
-
  users.extraUsers.root = {
    openssh.authorizedKeys.keys = [
      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBNdIiLvP2hmDUFyyE0oLOIXrjrMdWWpBV9/gPR5m4AiARx4JkufIDZzmptdYQ5FhJORJ4lluPqp7dAmahoSwg4lv9Di0iNQpHMJvNGZLHYKM1H1FWCCFIEDJ8bD4SVfrDg=="
-      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBDf6+TFaUtITiiU7b6DOiT4/C8fzCq70j9DGnNyo/+5bS7ffRezTS0AqqltHQs9/lbjUbtP+Iil7RUGF0o0X6v5y/Gt/GdV9QR+Nv1mJCF1KVOeMKm/vB0jjN+ncwHU+BA=="
+      "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCMALVC8RDTHec+PC8y1s3tcpUAODgq6DEzQdHDf/cyvDMfmCaPiMxfIdmkns5lMa03hymIfSmLUF0jFFDc7biRp7uf9AAXNsrTmplHii0l0McuOOZGlSdZM4eL817P7UwJqFMxJyFXDjkubhQiX6kp25Kfuj/zLnupRCaiDvE7ho/xay6Jrv0XLz935TPDwkc7W1asLIvsZLheB+sRz9SMOb9gtrvk5WXZl5JTOFOLu+JaRwQLHL/xdcHJTOod7tqHYfpoC5JHrEwKzbhTOwxZBQBfTQjQktKENQtBxXHTe71rUEWfEZQGg60/BC4BrRmh4qJjlJu3v4VIhC7SSHn1"
    ];
    shell = pkgs.fish;
  };
  # https://github.com/NixOS/nixpkgs/issues/155357
  security.sudo.enable = true;

-  # M-Labs HK
  users.extraUsers.sb = {
    isNormalUser = true;
-    extraGroups = ["lp" "scanner" "afws" "audio"];
+    extraGroups = ["lp" "scanner" "afws"];
    openssh.authorizedKeys.keys = [
      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBF/YybP+fQ0J+bNqM5Vgx5vDmVqVWsgUdF1moUxghv7d73GZAFaM6IFBdrXTAa33AwnWwDPMrTgP1V6SXBkb3ciJo/lD1urJGbydbSI5Ksq9d59wvOeANvyWYrQw6+eqTQ=="
-      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBDf6+TFaUtITiiU7b6DOiT4/C8fzCq70j9DGnNyo/+5bS7ffRezTS0AqqltHQs9/lbjUbtP+Iil7RUGF0o0X6v5y/Gt/GdV9QR+Nv1mJCF1KVOeMKm/vB0jjN+ncwHU+BA=="
+      "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCMALVC8RDTHec+PC8y1s3tcpUAODgq6DEzQdHDf/cyvDMfmCaPiMxfIdmkns5lMa03hymIfSmLUF0jFFDc7biRp7uf9AAXNsrTmplHii0l0McuOOZGlSdZM4eL817P7UwJqFMxJyFXDjkubhQiX6kp25Kfuj/zLnupRCaiDvE7ho/xay6Jrv0XLz935TPDwkc7W1asLIvsZLheB+sRz9SMOb9gtrvk5WXZl5JTOFOLu+JaRwQLHL/xdcHJTOod7tqHYfpoC5JHrEwKzbhTOwxZBQBfTQjQktKENQtBxXHTe71rUEWfEZQGg60/BC4BrRmh4qJjlJu3v4VIhC7SSHn1"
    ];
    shell = pkgs.fish;
  };
+  users.extraUsers.rj = {
+    isNormalUser = true;
+    extraGroups = ["afws"];
+  };
+  users.extraUsers.nkrackow = {
+    isNormalUser = true;
+    extraGroups = ["afws"];
+    openssh.authorizedKeys.keys = [
+      "ssh-rsa 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"
+    ];
+  };
+  users.extraUsers.occheung = {
+    isNormalUser = true;
+    openssh.authorizedKeys.keys = [
+      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBPEvmWmxpFpMgp5fpjKud8ev0cyf/+X5fEpQt/YD/+u4mbvZYPE300DLqQ0h/qjgvaGMz1ndf4idYnRdy+plJEC/+hmlRW5NlcpAr3S/LYAisacgKToFVl+MlBo+emS9Ig=="
+    ];
+  };
  users.extraUsers.spaqin = {
    isNormalUser = true;
-    extraGroups = ["lp" "afws"];
+    extraGroups = ["lp" "scanner" "afws"];
    openssh.authorizedKeys.keys = [
      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBOtmlQmIK/cEUkcwA/y9jC4AohjoEmikerpxzPhZZtOcENidN/vFum58jIcSxBvjHnILOzhfCTeLvbvGbQOFE53a7FOyEHmIzXRKS86Mg5bPHUBJxRSq9MjulGZXES3HOQ=="
    ];
    shell = pkgs.zsh;
  };
-  users.extraUsers.therobs12 = {
+  users.extraUsers.esavkin = {
    isNormalUser = true;
    extraGroups = ["lp" "afws"];
    openssh.authorizedKeys.keys = [
-      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBK1tUg7TtceARRnGI80Ai5kNFolFfZ++LH9v1UoRCiJdxeQWPdNYO0Gj7+ejJvgZXwvN4yHGgcZHraEml4Mj/dKrEMFygfuYLDRmXtPFwX6TNMrWlxMhPzuNY+yCaxlqYg=="
+      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBLDJI4GFLBmScbeR8Jh4Gi8A/2nuGlYtFTJVT+Es/bzdiPRk8DLG62T0hyRR+8LfHjbrCsDuYFNztT8hHGXd7h3xp3y2X7ArkJo8xUK5QxGd5D2Zn4ANfZTTVkoGlEHbFA=="
    ];
  };
  users.extraUsers.morgan = {
    isNormalUser = true;
+    extraGroups = ["lp"];
    openssh.authorizedKeys.keys = [
      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBDXMbJEPn0mM2Bgt6eMAd+c0J5oPSvquZG+BxKdUf0qbeQldRaoB26NHMZnLte/fS00U/cqStLWDiwtEvH5WlbbawsMBymm65zbWMByebXhBDjdr6a1kkOFcKJvAL9qVBQ=="
    ];
  };
-
-  # M-Labs PH
-  users.extraUsers.flo = {
-    isNormalUser = true;
-    extraGroups = ["afws"];
-    openssh.authorizedKeys.keys = [
-      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBF4ZYNBYqJPQCKBYjMatFj5eGMyzh/X2TSraJEG6XBdg3jnJ3WcsOd7sm+vx+o9Y1EJ2kvwW/Vy9c3OYVU2U45njox//sKtt8Eyzszws3EYJqHQ6KAwXtW9ao4aamRtK3Q=="
-    ];
-  };
-
-  # QUARTIQ
-  users.extraUsers.rj = {
-    isNormalUser = true;
-    extraGroups = ["afws"];
-    openssh.authorizedKeys.keys = [
-      "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAACAQC27krR8G8Pb59YuYm7+X2mmNnVdk/t9myYgO8LH0zfb2MeeXX5+90nW9kMjKflJss/oLl8dkD85jbJ0fRbRkfJd20pGCqCUuYAbYKkowigFVEkbrbWSLkmf+clRjzJOuBuUA0uq0XKS17uMC3qhu+dDdBOAIKb3L83NfVE8p8Pjb4BPktQrdxefM43/x4jTMuc7tgxVmTOEge3+rmVPK2GnLkUBgBn8b6S+9ElPd63HXI5J5f61v21l5N9V0mhTu1pv6PiDRdFIlFDK9dLVZcZ2qlzpKmCnFrOoreBEgre44SpfFe5/MMItxvWiVsj/rij/rHZZiol1k7JiQCnEHeCCbjjvcBBka5HxZgcb3vBZVceTOawrmjbdbA2dq35sUptz/bEgdZ1UVCmVpWsdROAlEDBmSSbcVwxzcvhoKnkpbuP4Q0V3tVKSLW053ADFNB4frtwY5nAZfsVErFLLphjwb8nlyJoDRNapQrn5syEiW0ligX2AAskZTYIl2A5AYyWPrmX6HJOPqZGatMU3qQiRMxs+hFqhyyCmBgl0kcsgW09MBKtJWk1Fbii98MHqgRUN9R7AUiYy5p78Pnv9DC8DT8Ubl9zoP0g5d40P9NGK2LAhMxLXvtckJ4ERqbSEcNZJw+q4jBrOHnMTz+NLdAUiEtru+6T2OdhaHv+eiNlFQ== robert-jordens-rsa4096"
-     "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCUdbne3NtIG+iy/jer76/OY+IksuS3BDLSXPnWrGejWnig9h+L6sUV0lEVI6dqp+W/b8jWqPB8nh5S0NZsCd3Ta3Go82k/SPPkh9lB2PpfquhCjLnmC/RNc3TgC4FuiS+NZHqXaTggYHubNwEK+8gynMqkMQXjOGU02U0CtUfsYdAm75AW60DySZCRNwOcU0Ndpn1UCpha7fL1k179Dd/OtArkYsIL24ohlfxFeOB3jGYQK6ATmzbvCRjwIKXcyECuajWwfnDg9FtDWrqHNzu5dJlvmxoWm8zCDgMj53uiA7TjujQN81MYrIJNeEwSr5jXQMqzA3mzlk4k3Z0qs3TP robert-jordens-64FEFBAF-4D0749B2-rsa2048"
-     "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIMUaB2G1jexxfkdlly3fdWslH54/s/bOuvk9AxqpjtAY robert-jordens-ed25519"
-    ];
-  };
-  users.extraUsers.eduardotenholder = {
-    isNormalUser = true;
-    extraGroups = ["afws"];
-    openssh.authorizedKeys.keys = [
-      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIu6yhjCoZ62eamYrAXtFefDhplTRUIdD4tncwlkyAEH"
-    ];
-  };
-
-  # HKUST
  users.extraUsers.derppening = {
    isNormalUser = true;
    openssh.authorizedKeys.keys = [
      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBOKwN4ui94QfouYYlkI1lc3WgtjURVYLTdAizJIBnY3dNRNblAiuvTD4pQ+LEI+eOTg4SnQz1NeqH4YOQhbT5+/nZojvGTb3UVN13ZYND+Gci3DdqB2mwIYop7kMXwHgLQ=="
    ];
  };
-
+  users.extraUsers.dpn = {
+    isNormalUser = true;
+    openssh.authorizedKeys.keys = [
+      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBGChLocYJi8XcSJkIjT2Olm3jPGjtRq5aORa5G9F3OqmjCfvav9Q5+2Mc64XqHtNTffnJuDe4gv+lVJatC0URvPs2HyxXmxRK0jgkkLSUsV2SYLlgMqHW3jsrdh6wKBmkg=="
+    ];
+  };
  users.extraUsers.nix = {
    isNormalUser = true;
  };
@ -737,6 +577,7 @@ in

  nix.settings.max-jobs = 10;
  nix.nrBuildUsers = 64;
+  nix.settings.trusted-users = ["sb"];
  services.hydra = {
    enable = true;
    useSubstitutes = true;
@ -753,10 +594,6 @@ in
        job = web:web:web
        command = [ $(jq '.buildStatus' < $HYDRA_JSON) = 0 ] && ln -sfn $(jq -r '.outputs[0].path' < $HYDRA_JSON) ${hydraWwwOutputs}/web
      </runcommand>
-      <runcommand>
-        job = web:web:web-intl
-        command = [ $(jq '.buildStatus' < $HYDRA_JSON) = 0 ] && ${pkgs.rsync}/bin/rsync -r -c $(jq -r '.outputs[0].path' < $HYDRA_JSON)/ zolaupd@10.47.3.0:/var/www/m-labs-intl.com/html/
-      </runcommand>
      <runcommand>
        job = web:web:nmigen-docs
        command = [ $(jq '.buildStatus' < $HYDRA_JSON) = 0 ] && ln -sfn $(jq -r '.outputs[0].path' < $HYDRA_JSON) ${hydraWwwOutputs}/nmigen-docs
@ -783,10 +620,6 @@ in
        job = artiq:extra-beta:conda-channel
        command = [ $(jq '.buildStatus' < $HYDRA_JSON) = 0 ] && ln -sfn $(jq -r '.outputs[0].path' < $HYDRA_JSON) ${hydraWwwOutputs}/artiq-conda-channel-beta
      </runcommand>
-      <runcommand>
-        job = artiq:extra-beta:msys2-repos
-        command = [ $(jq '.buildStatus' < $HYDRA_JSON) = 0 ] && ln -sfn $(jq -r '.outputs[0].path' < $HYDRA_JSON) ${hydraWwwOutputs}/artiq-msys2-repos-beta
-      </runcommand>

      <runcommand>
        job = artiq:main:artiq-manual-html
@ -800,21 +633,17 @@ in
        job = artiq:extra:conda-channel
        command = [ $(jq '.buildStatus' < $HYDRA_JSON) = 0 ] && ln -sfn $(jq -r '.outputs[0].path' < $HYDRA_JSON) ${hydraWwwOutputs}/artiq-conda-channel
      </runcommand>
-      <runcommand>
-        job = artiq:extra:msys2-repos
-        command = [ $(jq '.buildStatus' < $HYDRA_JSON) = 0 ] && ln -sfn $(jq -r '.outputs[0].path' < $HYDRA_JSON) ${hydraWwwOutputs}/artiq-msys2-repos
-      </runcommand>

      <runcommand>
-        job = artiq:main-legacy:artiq-manual-html
+        job = artiq:full-legacy:artiq-manual-html
        command = [ $(jq '.buildStatus' < $HYDRA_JSON) = 0 ] && ln -sfn $(jq -r '.outputs[0].path' < $HYDRA_JSON) ${hydraWwwOutputs}/artiq-manual-html-legacy
      </runcommand>
      <runcommand>
-        job = artiq:main-legacy:artiq-manual-pdf
-        command = [ $(jq '.buildStatus' < $HYDRA_JSON) = 0 ] && ln -sfn $(jq -r '.outputs[0].path' < $HYDRA_JSON) ${hydraWwwOutputs}/artiq-manual-pdf-legacy
+        job = artiq:full-legacy:artiq-manual-latexpdf
+        command = [ $(jq '.buildStatus' < $HYDRA_JSON) = 0 ] && ln -sfn $(jq -r '.outputs[0].path' < $HYDRA_JSON) ${hydraWwwOutputs}/artiq-manual-latexpdf-legacy
      </runcommand>
      <runcommand>
-        job = artiq:extra-legacy:conda-channel
+        job = artiq:full-legacy:conda-channel
        command = [ $(jq '.buildStatus' < $HYDRA_JSON) = 0 ] && ln -sfn $(jq -r '.outputs[0].path' < $HYDRA_JSON) ${hydraWwwOutputs}/artiq-conda-channel-legacy
      </runcommand>

@ -823,6 +652,11 @@ in
        command = [ $(jq '.buildStatus' < $HYDRA_JSON) = 0 ] && ln -sfn $(jq -r '.outputs[0].path' < $HYDRA_JSON) ${hydraWwwOutputs}/artiq-conda-channel-archives/$(jq -r '.build' < $HYDRA_JSON)
      </runcommand>

+      <runcommand>
+        job = artiq:extra-beta:msys2-repos
+        command = [ $(jq '.buildStatus' < $HYDRA_JSON) = 0 ] && ln -sfn $(jq -r '.outputs[0].path' < $HYDRA_JSON) ${hydraWwwOutputs}/artiq-msys2-repos-beta
+      </runcommand>
+
      <runcommand>
        job = artiq:main-nac3:msys2-repos
        command = [ $(jq '.buildStatus' < $HYDRA_JSON) = 0 ] && ln -sfn $(jq -r '.outputs[0].path' < $HYDRA_JSON) ${hydraWwwOutputs}/artiq-msys2-repos-nac3
@ -859,7 +693,6 @@ in
    secret-key-files = /etc/nixos/secret/nixbld.m-labs.hk-1
    experimental-features = nix-command flakes
  '';
-  nix.settings.allowed-uris = "github: gitlab: git+https://";  # https://github.com/NixOS/nix/issues/5039
  nix.settings.extra-sandbox-paths = ["/opt"];

  services.mlabs-backup.enable = true;
@ -868,19 +701,11 @@ in
  services.gitea = {
    enable = true;
    appName = "M-Labs Git";
-    database = {
-      type = "postgres";
-      socket = "/run/postgresql";
-    };
    mailerPasswordFile = "/etc/nixos/secret/mailerpassword";
    settings = {
      server = {
        ROOT_URL = "https://git.m-labs.hk/";
        HTTP_PORT = 3001;
-        DISABLE_SSH = false;
-        SSH_CREATE_AUTHORIZED_KEYS_FILE = false;
-        START_SSH_SERVER = true;
-        SSH_PORT = 2222;
      };

      indexer = {
@ -889,8 +714,7 @@ in

      mailer = {
        ENABLED = true;
-        SMTP_ADDR = "mail.m-labs.hk";
-        SMTP_PORT = "587";
+        HOST = "mail.m-labs.hk:587";
        FROM = "sysop@m-labs.hk";
        USER = "sysop@m-labs.hk";
      };
@ -919,20 +743,12 @@ in
    siteUrl = "https://chat.m-labs.hk/";
    mutableConfig = true;
  };
+  services.postgresql.package = pkgs.postgresql_12;
  services.matterbridge = {
    enable = true;
    configPath = "/etc/nixos/secret/matterbridge.toml";
  };
 
-  services.postgresql = {
-    package = pkgs.postgresql_15;
-    settings.listen_addresses = pkgs.lib.mkForce "";
-    identMap =
-      ''
-      rt rt rt_user
-      '';
-  };
-
  nixpkgs.config.packageOverrides = super: let self = super.pkgs; in {
    nix = super.nix.overrideAttrs(oa: {
      patches = oa.patches or [] ++ [ ./nix-networked-derivations.patch ];
@ -942,6 +758,7 @@ in
        ./hydra-conda.patch
        ./hydra-msys2.patch
        ./hydra-restrictdist.patch
+        ./hydra-hack-allowed-uris.patch  # work around https://github.com/NixOS/nix/issues/5039
      ];
      hydraPath = oa.hydraPath + ":" + super.lib.makeBinPath [ super.jq ];
      doCheck = false;  # FIXME: ldap tests fail on hydra rebuild, seems unrelated to patches above.
@ -964,7 +781,7 @@ in
    recommendedTlsSettings = true;
    virtualHosts = let
      mainWebsite = {
-        addSSL = true;
+        forceSSL = true;
        enableACME = true;
        root = "${hydraWwwOutputs}/web";
        extraConfig = ''
@ -982,7 +799,7 @@ in
            expires 60d;
          '';
        };
-        locations."/nuc-netboot/".alias = "${import ./defenestrate { prioNixbld = true; } }/";
+        locations."/nuc-netboot/".alias = "${import ./defenestrate}/";

        # legacy URLs, redirect to avoid breaking people's bookmarks
        locations."/gateware.html".extraConfig = ''
@ -1018,10 +835,10 @@ in
          alias = "${hydraWwwOutputs}/artiq-manual-pdf/ARTIQ.pdf";
        };
        locations."/artiq/manual-legacy/" = {
-          alias = "${hydraWwwOutputs}/artiq-manual-html-legacy/";
+          alias = "${hydraWwwOutputs}/artiq-manual-html-legacy/share/doc/artiq-manual/html/";
        };
        locations."=/artiq/manual-legacy.pdf" = {
-          alias = "${hydraWwwOutputs}/artiq-manual-pdf-legacy/ARTIQ.pdf";
+          alias = "${hydraWwwOutputs}/artiq-manual-latexpdf-legacy/share/doc/artiq-manual/ARTIQ.pdf";
        };

        # legacy content
@ -1057,12 +874,6 @@ in
            autoindex on;
          '';
        };
-        locations."/artiq/" = {
-          alias = "${hydraWwwOutputs}/artiq-msys2-repos/";
-          extraConfig = ''
-            autoindex on;
-          '';
-        };
        locations."/artiq-nac3/" = {
          alias = "${hydraWwwOutputs}/artiq-msys2-repos-nac3/";
          extraConfig = ''
@ -1143,14 +954,20 @@ in
      "forum.m-labs.hk" = {
        forceSSL = true;
        enableACME = true;
+        root = "/var/www/flarum/public";
+        locations."~ \.php$".extraConfig = ''
+          fastcgi_pass unix:${config.services.phpfpm.pools.flarum.socket};
+          fastcgi_index index.php;
+        '';
+        extraConfig = ''
+          index index.php;
+          include /var/www/flarum/.nginx.conf;
+        '';
      };
      "perso.m-labs.hk" = {
        addSSL = true;
        enableACME = true;
        root = "/var/www/perso";
-        extraConfig = ''
-          autoindex on;
-        '';
      };
      "rt.m-labs.hk" = {
        forceSSL = true;
@ -1214,17 +1031,23 @@ in
      };
    };
  };
-
  services.mysql = {
    enable = true;
-    package = pkgs.lib.mkForce pkgs.mariadb;
-    ensureDatabases = pkgs.lib.mkForce [];
-    ensureUsers = pkgs.lib.mkForce [];
+    package = pkgs.mariadb;
+  };
+  services.phpfpm.pools.flarum = {
+    user = "nobody";
+    settings = {
+      "listen.owner" = "nginx";
+      "listen.group" = "nginx";
+      "listen.mode" = "0600";
+      "pm" = "dynamic";
+      "pm.max_children" = 5;
+      "pm.start_servers" = 2;
+      "pm.min_spare_servers" = 1;
+      "pm.max_spare_servers" = 3;
+      "pm.max_requests" = 500;
    };
-  services.flarum = {
-    enable = true;
-    package = pkgs.callPackage ./flarum {};
-    domain = "forum.m-labs.hk";
  };

  services.rt = {
@ -1249,18 +1072,7 @@ in
      Restart = "on-failure";
      User = "rt";
      Group = "rt";
-      ExecStart = "${pkgs.bash}/bin/bash -c 'PATH=${pkgs.rt}/bin HOME=/tmp ${pkgs.fetchmail}/bin/fetchmail --pidfile /tmp/.fetchmail.pid -f /etc/nixos/secret/rt_fetchmailrc'";
-    };
-  };
-  systemd.services.rt-fetchmail-intl = {
-    description = "Fetchmail for RT (intl)";
-    wantedBy = [ "multi-user.target" ];
-    after = [ "dovecot2.service" ];
-    serviceConfig = {
-      Restart = "on-failure";
-      User = "rt";
-      Group = "rt";
-      ExecStart = "${pkgs.bash}/bin/bash -c 'PATH=${pkgs.rt}/bin HOME=/tmp ${pkgs.fetchmail}/bin/fetchmail --pidfile /tmp/.fetchmail-intl.pid -f /etc/nixos/secret/rt_fetchmailrc_intl'";
+      ExecStart = "${pkgs.bash}/bin/bash -c 'PATH=${pkgs.rt}/bin HOME=/tmp ${pkgs.fetchmail}/bin/fetchmail -f /etc/nixos/secret/rt_fetchmailrc'";
    };
  };

@ -1268,28 +1080,11 @@ in
    enable = true;
    localDnsResolver = false;  # conflicts with dnsmasq
    fqdn = "mail.m-labs.hk";
-    domains = [ "m-labs.hk" "m-labs.ph" "m-labs-intl.com" "193thz.com" "malloctech.fr" ];
+    domains = [ "m-labs.hk" "m-labs.ph" "193thz.com" "malloctech.fr" ];
    enablePop3 = true;
    enablePop3Ssl = true;
    certificateScheme = "acme-nginx";
  } // (import /etc/nixos/secret/email_settings.nix);
-  services.postfix = {
-    mapFiles."sender_transport" = builtins.toFile "sender_transport" ''
-        @m-labs-intl.com intltunnel:
-    '';
-    config = {
-      sender_dependent_default_transport_maps = "hash:/var/lib/postfix/conf/sender_transport";
-    };
-    masterConfig."intltunnel" = {
-      type = "unix";
-      command = "smtp";
-      args = [
-        "-o" "inet_interfaces=10.47.3.1"
-        "-o" "smtp_helo_name=mail.m-labs-intl.com"
-        "-o" "inet_protocols=ipv4"
-       ];
-    };
-  };
  services.roundcube = {
    enable = true;
    hostName = "mail.m-labs.hk";
@ -1302,15 +1097,12 @@ in

  services.nextcloud = {
    enable = true;
-    package = pkgs.nextcloud30;
-    extraApps = { inherit (config.services.nextcloud.package.packages.apps) forms; };
+    package = pkgs.nextcloud27;
    hostName = "files.m-labs.hk";
    https = true;
    maxUploadSize = "2G";
    config.adminpassFile = "/etc/nixos/secret/nextcloud_pass.txt";
-    settings.default_phone_region = "HK";
-    settings.log_type = "file";
-    phpOptions."opcache.interned_strings_buffer" = "12";
+    config.defaultPhoneRegion = "HK";
  };

  services.hedgedoc = {
--- 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
@ -1,39 +0,0 @@
-{
-  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-GLE5ZtzZmQ8YbitV6LG744QHoGxlj5TfC5wP2a3eFpU=";
-
-  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
@ -1,16 +0,0 @@
-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
@ -0,0 +1,13 @@
+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/", "https://git.m-labs.hk/m-labs/", "https://gitlab.com/duke-artiq/"};
+
+         /* When building a flake, use pure evaluation (no access to
+            'getEnv', 'currentSystem' etc. */
+         evalSettings.pureEval = myArgs.flake;
--- a/nixbld-etc-nixos/named/193thz.com
+++ b/nixbld-etc-nixos/named/193thz.com
@ -1,7 +1,7 @@
 $TTL 7200

@						SOA	ns.193thz.com. sb.m-labs.hk. (
-							2024060201
+							2023121301
 							7200
 							3600
 							86400
@ -12,12 +12,11 @@ $TTL 7200
 						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"
+						CAA		0 issue "letsencrypt.org; accounturi=https://acme-v02.api.letsencrypt.org/acme/acct/496268470"


 ns						A		94.190.212.123
--- 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
@ -1,7 +1,7 @@
 $TTL 7200

@						SOA	NS.XN--WBTZ5WPQAJ35CFXC.XN--J6W193G. sb.m-labs.hk. (
-							2024060201
+							2024010901
 							7200
 							3600
 							86400
@ -10,7 +10,7 @@ $TTL 7200

 						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"
+						CAA		0 issue "letsencrypt.org; accounturi=https://acme-v02.api.letsencrypt.org/acme/acct/496268470"

 200	PTR	router.alt.m-labs.hk.
 201	PTR	stewardship1.alt.m-labs.hk.
--- a/nixbld-etc-nixos/named/m-labs-intl.com
+++ b/nixbld-etc-nixos/named/m-labs-intl.com
@ -1,30 +0,0 @@
-$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
@ -1,7 +1,7 @@
 $TTL 7200

@						SOA	NS.XN--WBTZ5WPQAJ35CFXC.XN--J6W193G. sb.m-labs.hk. (
-							2024080501
+							2024010901
 							7200
 							3600
 							86400
@ -13,16 +13,14 @@ $TTL 7200
 						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"
+						CAA		0 issue "letsencrypt.org; accounturi=https://acme-v02.api.letsencrypt.org/acme/acct/496268470"


 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"
@ -43,7 +41,17 @@ files					CNAME	@
 docs					CNAME	@

 rpi-1					AAAA	2001:470:f891:1:dea6:32ff:fe8a:6a93
+rpi-2					AAAA	2001:470:f891:1:ba27:ebff:fef0:e9e6
 rpi-4					AAAA	2001:470:f891:1:dea6:32ff:fe14:fce9
+chiron					AAAA	2001:470:f891:1:7f02:9ebf:bee9:3dc7
+old-nixbld				AAAA	2001:470:f891:1:a07b:f49a:a4ef:aad9
+zeus					AAAA	2001:470:f891:1:4fd7:e70a:68bf:e9c1
+franz					AAAA	2001:470:f891:1:1b65:a743:2335:f5c6
+hera					AAAA	2001:470:f891:1:8b5e:404d:ef4e:9d92
+hestia					AAAA	2001:470:f891:1:881c:f409:a090:8401
+vulcan					AAAA	2001:470:f891:1:105d:3f15:bd53:c5ac
+
+aux						A		42.200.147.171

 router.alt				A		103.206.98.200
 stewardship1.alt		A		103.206.98.201
--- a/nixbld-etc-nixos/named/m-labs.ph
+++ b/nixbld-etc-nixos/named/m-labs.ph
@ -1,7 +1,7 @@
 $TTL 7200

@						SOA	ns1.m-labs.ph. sb.m-labs.hk. (
-							2024060201
+							2024010901
 							7200
 							3600
 							86400
@ -12,12 +12,11 @@ $TTL 7200
 						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"
+						CAA		0 issue "letsencrypt.org; accounturi=https://acme-v02.api.letsencrypt.org/acme/acct/496268470"

 ns1						A		94.190.212.123
 ns1						AAAA	2001:470:18:390::2
--- a/nixbld-etc-nixos/named/malloctech.fr
+++ b/nixbld-etc-nixos/named/malloctech.fr
@ -1,7 +1,7 @@
 $TTL 7200

@						SOA	ns.malloctech.fr. sb.m-labs.hk. (
-							2024060201
+							2024010901
 							7200
 							3600
 							86400
@ -14,7 +14,7 @@ $TTL 7200
 						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"
+						CAA		0 issue "letsencrypt.org; accounturi=https://acme-v02.api.letsencrypt.org/acme/acct/496268470"

 ns						A		94.190.212.123
 ns						AAAA	2001:470:18:390::2
--- a/nixbld-etc-nixos/nix-networked-derivations.patch
+++ b/nixbld-etc-nixos/nix-networked-derivations.patch
@ -1,8 +1,8 @@
 diff --git a/src/libstore/build/local-derivation-goal.cc b/src/libstore/build/local-derivation-goal.cc
-index 763045a80..d7c5cc82e 100644
+index 64b55ca6a..9b4e52b8e 100644
 --- a/src/libstore/build/local-derivation-goal.cc
 +++ b/src/libstore/build/local-derivation-goal.cc
-@@ -190,6 +190,8 @@ void LocalDerivationGoal::tryLocalBuild()
+@@ -180,6 +180,8 @@ void LocalDerivationGoal::tryLocalBuild()
 
     assert(derivationType);
 
@ -11,7 +11,7 @@ index 763045a80..d7c5cc82e 100644
     /* Are we doing a chroot build? */
     {
         auto noChroot = parsedDrv->getBoolAttr("__noChroot");
-@@ -207,7 +209,7 @@ void LocalDerivationGoal::tryLocalBuild()
+@@ -197,7 +199,7 @@ void LocalDerivationGoal::tryLocalBuild()
         else if (settings.sandboxMode == smDisabled)
             useChroot = false;
         else if (settings.sandboxMode == smRelaxed)
@ -20,7 +20,7 @@ index 763045a80..d7c5cc82e 100644
     }
 
     auto & localStore = getLocalStore();
-@@ -717,7 +719,7 @@ void LocalDerivationGoal::startBuilder()
+@@ -691,7 +693,7 @@ void LocalDerivationGoal::startBuilder()
                 "nogroup:x:65534:\n", sandboxGid()));
 
         /* Create /etc/hosts with localhost entry. */
@ -29,7 +29,7 @@ index 763045a80..d7c5cc82e 100644
             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()
+@@ -895,7 +897,7 @@ void LocalDerivationGoal::startBuilder()
            us.
         */
 
@ -38,7 +38,7 @@ index 763045a80..d7c5cc82e 100644
             privateNetwork = true;
 
         userNamespaceSync.create();
-@@ -1160,7 +1162,7 @@ void LocalDerivationGoal::initEnv()
+@@ -1134,7 +1136,7 @@ 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). */
@ -47,7 +47,7 @@ index 763045a80..d7c5cc82e 100644
         for (auto & i : parsedDrv->getStringsAttr("impureEnvVars").value_or(Strings()))
             env[i] = getEnv(i).value_or("");
     }
-@@ -1829,7 +1831,7 @@ void LocalDerivationGoal::runChild()
+@@ -1799,7 +1801,7 @@ void LocalDerivationGoal::runChild()
             /* Fixed-output derivations typically need to access the
                network, so give them access to /etc/resolv.conf and so
                on. */
@ -56,7 +56,7 @@ index 763045a80..d7c5cc82e 100644
                 // 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()
+@@ -2050,7 +2052,7 @@ void LocalDerivationGoal::runChild()
                     #include "sandbox-defaults.sb"
                     ;
 
@ -66,11 +66,11 @@ index 763045a80..d7c5cc82e 100644
                         #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
+index 0a05081c7..4c251718c 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
-      */
+@@ -66,6 +66,8 @@ struct LocalDerivationGoal : public DerivationGoal
+ 
     Path chrootRootDir;
 
 +    bool networked;
--- a/nixbld-etc-nixos/rt.nix
+++ b/nixbld-etc-nixos/rt.nix
@ -19,9 +19,14 @@ let
      Set($Timezone, '${cfg.timeZone}');

      Set($DatabaseType, 'Pg');
-      Set($DatabaseHost, '/run/postgresql');
-      Set($DatabaseUser, 'rt');
+      Set($DatabaseHost, 'localhost');
+      Set($DatabaseUser, 'rt_user');
      Set($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($LogToSTDERR, undef); # Don't log twice
@ -30,7 +35,7 @@ let
      Set($OwnerEmail, '${cfg.ownerEmail}');
      Set($MaxAttachmentSize, 15360000);
      Set($CheckMoreMSMailHeaders, 1);
-      Set($RTAddressRegexp, '^(helpdesk)\@(m-labs.hk|m-labs-intl.com)$');
+      Set($RTAddressRegexp, '^(helpdesk|sales)\@(m-labs.hk)$');
      Set($LoopsToRTOwner, 0);

      # System (Outgoing mail)
@ -149,6 +154,13 @@ 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;
@ -233,6 +245,8 @@ in {

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

        environment = {
--- a/nixops/chiron-hardware-configuration.nix
+++ b/nixops/chiron-hardware-configuration.nix
@ -18,7 +18,6 @@
  fileSystems."/boot" =
    { device = "/dev/disk/by-uuid/060C-8772";
      fsType = "vfat";
-      options = [ "fmask=0022" "dmask=0022" ];
    };

  swapDevices = [ ];
--- a/nixops/common-users.nix
+++ b/nixops/common-users.nix
@ -4,7 +4,7 @@
  root = {
    openssh.authorizedKeys.keys = [
      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBF/YybP+fQ0J+bNqM5Vgx5vDmVqVWsgUdF1moUxghv7d73GZAFaM6IFBdrXTAa33AwnWwDPMrTgP1V6SXBkb3ciJo/lD1urJGbydbSI5Ksq9d59wvOeANvyWYrQw6+eqTQ=="
-      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBDf6+TFaUtITiiU7b6DOiT4/C8fzCq70j9DGnNyo/+5bS7ffRezTS0AqqltHQs9/lbjUbtP+Iil7RUGF0o0X6v5y/Gt/GdV9QR+Nv1mJCF1KVOeMKm/vB0jjN+ncwHU+BA=="
+      "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCMALVC8RDTHec+PC8y1s3tcpUAODgq6DEzQdHDf/cyvDMfmCaPiMxfIdmkns5lMa03hymIfSmLUF0jFFDc7biRp7uf9AAXNsrTmplHii0l0McuOOZGlSdZM4eL817P7UwJqFMxJyFXDjkubhQiX6kp25Kfuj/zLnupRCaiDvE7ho/xay6Jrv0XLz935TPDwkc7W1asLIvsZLheB+sRz9SMOb9gtrvk5WXZl5JTOFOLu+JaRwQLHL/xdcHJTOod7tqHYfpoC5JHrEwKzbhTOwxZBQBfTQjQktKENQtBxXHTe71rUEWfEZQGg60/BC4BrRmh4qJjlJu3v4VIhC7SSHn1"
    ];
  };
  sb = {
@ -12,7 +12,7 @@
    extraGroups = ["wheel" "plugdev" "dialout" "libvirtd"];
    openssh.authorizedKeys.keys = [
      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBF/YybP+fQ0J+bNqM5Vgx5vDmVqVWsgUdF1moUxghv7d73GZAFaM6IFBdrXTAa33AwnWwDPMrTgP1V6SXBkb3ciJo/lD1urJGbydbSI5Ksq9d59wvOeANvyWYrQw6+eqTQ=="
-      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBDf6+TFaUtITiiU7b6DOiT4/C8fzCq70j9DGnNyo/+5bS7ffRezTS0AqqltHQs9/lbjUbtP+Iil7RUGF0o0X6v5y/Gt/GdV9QR+Nv1mJCF1KVOeMKm/vB0jjN+ncwHU+BA=="
+      "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCMALVC8RDTHec+PC8y1s3tcpUAODgq6DEzQdHDf/cyvDMfmCaPiMxfIdmkns5lMa03hymIfSmLUF0jFFDc7biRp7uf9AAXNsrTmplHii0l0McuOOZGlSdZM4eL817P7UwJqFMxJyFXDjkubhQiX6kp25Kfuj/zLnupRCaiDvE7ho/xay6Jrv0XLz935TPDwkc7W1asLIvsZLheB+sRz9SMOb9gtrvk5WXZl5JTOFOLu+JaRwQLHL/xdcHJTOod7tqHYfpoC5JHrEwKzbhTOwxZBQBfTQjQktKENQtBxXHTe71rUEWfEZQGg60/BC4BrRmh4qJjlJu3v4VIhC7SSHn1"
    ];
  };
  rj = {
@ -57,7 +57,7 @@
  };
  esavkin = {
    isNormalUser = true;
-    extraGroups = ["plugdev" "dialout" "libvirtd" "wireshark"];
+    extraGroups = ["plugdev" "dialout" "libvirtd"];
    openssh.authorizedKeys.keys = [
      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBLDJI4GFLBmScbeR8Jh4Gi8A/2nuGlYtFTJVT+Es/bzdiPRk8DLG62T0hyRR+8LfHjbrCsDuYFNztT8hHGXd7h3xp3y2X7ArkJo8xUK5QxGd5D2Zn4ANfZTTVkoGlEHbFA=="
    ];
@ -78,14 +78,14 @@
  };
  linuswck = {
    isNormalUser = true;
-    extraGroups = ["plugdev" "dialout" "wireshark" "libvirtd"];
+    extraGroups = ["plugdev" "dialout"];
    openssh.authorizedKeys.keys = [
      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBAFYwmik6/xY1vb9aKBOpKklKOwSJJ0PEgNwWNULghZGJ0g4CTk04LXLSMYBm1SW74df8YMgaE/eoidq6smN6hKIgo8s3qPQGZAi4UXffMs2ciqXNa/zZcCu3PyZvyksxA=="
    ];
  };
  morgan = {
    isNormalUser = true;
-    extraGroups = ["plugdev" "dialout" "wireshark" "libvirtd"];
+    extraGroups = ["plugdev" "dialout"];
    openssh.authorizedKeys.keys = [
      "ecdsa-sha2-nistp384 AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBDXMbJEPn0mM2Bgt6eMAd+c0J5oPSvquZG+BxKdUf0qbeQldRaoB26NHMZnLte/fS00U/cqStLWDiwtEvH5WlbbawsMBymm65zbWMByebXhBDjdr6a1kkOFcKJvAL9qVBQ=="
    ];
@ -104,13 +104,6 @@
      "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=="
-    ];
-  };

  dpn = {
    isNormalUser = true;
--- a/nixops/demeter-hardware-configuration.nix
+++ b/nixops/demeter-hardware-configuration.nix
@ -21,7 +21,6 @@
  fileSystems."/boot" =
    { device = "/dev/disk/by-uuid/76A2-F01F";
      fsType = "vfat";
-      options = [ "fmask=0022" "dmask=0022" ];
    };

  swapDevices = [ ];
--- a/nixops/desktop.nix
+++ b/nixops/desktop.nix
@ -10,9 +10,6 @@ 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")
@ -64,8 +61,7 @@ in
    xournal
    xsane
    gtkwave unzip zip gnupg
-    gnome-tweaks
-    ghex
+    gnome3.gnome-tweaks
    jq sublime3 rink qemu_kvm
    tmux screen gdb minicom picocom
    artiq.packages.x86_64-linux.openocd-bscanspi
@ -93,7 +89,6 @@ in
  services.avscan.enable = true;

  services.openssh.enable = true;
-  services.openssh.authorizedKeysInHomedir = false;
  services.openssh.settings.PasswordAuthentication = false;
  services.openssh.extraConfig =
    ''
@ -126,17 +121,29 @@ in
  };
  services.avahi = {
    enable = true;
-    nssmdns4 = true;
+    nssmdns = true;
  };

-  hardware.graphics.enable32Bit = true;
+  # Enable sound.
+  sound.enable = true;
+  hardware.pulseaudio = {
+    enable = true;
+    package = pkgs.pulseaudioFull;
+  };

-  fonts.packages = [ pkgs.noto-fonts pkgs.noto-fonts-cjk-sans pkgs.noto-fonts-emoji pkgs.noto-fonts-extra pkgs.emacs-all-the-icons-fonts ];
+  hardware.opengl.driSupport32Bit = true;
+  hardware.pulseaudio.support32Bit = true;
+
+  i18n.inputMethod = {
+    enabled = "fcitx5";
+    fcitx5.addons = [ pkgs.fcitx5-table-extra pkgs.fcitx5-m17n ];
+  };
+  fonts.packages = [ pkgs.noto-fonts pkgs.noto-fonts-cjk 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.xkb.layout = "us";
-  services.xserver.xkb.options = "eurosign:e";
+  services.xserver.layout = "us";
+  services.xserver.xkbOptions = "eurosign:e";

  services.xserver.displayManager.gdm.enable = true;
  services.xserver.desktopManager.gnome.enable = true;
--- a/nixops/experimental-users.nix
+++ b/nixops/experimental-users.nix
@ -0,0 +1,4 @@
+{ pkgs, ... }:
+
+{
+}
--- a/nixops/extra-udev.nix
+++ b/nixops/extra-udev.nix
@ -21,7 +21,4 @@ SUBSYSTEM=="usb", ATTRS{idVendor}=="2109", ATTRS{idProduct}=="2812", MODE="0660"
 # 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
@ -10,6 +10,7 @@

  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 = [ ];
@ -23,7 +24,6 @@
  fileSystems."/boot" =
    { device = "/dev/disk/by-uuid/A33B-F001";
      fsType = "vfat";
-      options = [ "fmask=0022" "dmask=0022" ];
    };

  swapDevices = [ ];
--- a/nixops/hera-hardware-configuration.nix
+++ b/nixops/hera-hardware-configuration.nix
@ -18,7 +18,6 @@
  fileSystems."/boot" =
    { device = "/dev/disk/by-uuid/8C30-F6DC";
      fsType = "vfat";
-      options = [ "fmask=0022" "dmask=0022" ];
    };

  swapDevices = [ ];
--- a/nixops/hestia-hardware-configuration.nix
+++ b/nixops/hestia-hardware-configuration.nix
@ -18,7 +18,6 @@
  fileSystems."/boot" =
    { device = "/dev/disk/by-uuid/E085-5F21";
      fsType = "vfat";
-      options = [ "fmask=0022" "dmask=0022" ];
    };

  swapDevices = [ ];
--- a/nixops/athena-hardware-configuration.nix
+++ b/nixops/athena-hardware-configuration.nix
@ -8,21 +8,19 @@
    [ (modulesPath + "/installer/scan/not-detected.nix")
    ];

-  boot.kernelPackages = pkgs.linuxPackages_latest;
-  boot.initrd.availableKernelModules = [ "xhci_pci" "thunderbolt" "ahci" "nvme" "usbhid" ];
+  boot.initrd.availableKernelModules = [ "xhci_pci" "ehci_pci" "ahci" "usbhid" "usb_storage" "sd_mod" "sr_mod" ];
  boot.initrd.kernelModules = [ ];
-  boot.kernelModules = [ "kvm-intel" ];
+  boot.kernelModules = [ ];
  boot.extraModulePackages = [ ];

  fileSystems."/" =
-    { device = "/dev/disk/by-uuid/89463254-b38d-45db-92b6-0f7d92a44f47";
+    { device = "/dev/disk/by-uuid/3dca09c8-f725-416a-9f89-b69297698ca9";
      fsType = "ext4";
    };

  fileSystems."/boot" =
-    { device = "/dev/disk/by-uuid/F84B-ACC5";
+    { device = "/dev/disk/by-uuid/4E51-B390";
      fsType = "vfat";
-      options = [ "fmask=0022" "dmask=0022" ];
    };

  swapDevices = [ ];
@ -32,14 +30,18 @@
  # 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.enp3s0.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;

-  hardware.cpu.intel.updateMicrocode = true;
+  nixpkgs.config.nvidia.acceptLicense = true;
+  hardware.nvidia.package = config.boot.kernelPackages.nvidiaPackages.legacy_470;
+  services.xserver.videoDrivers = [ "nvidia" ];
+  services.xserver.displayManager.gdm.wayland = false;

-  system.stateVersion = "23.11";
+  system.stateVersion = "23.05";
 }
--- a/nixops/jupiter-hardware-configuration.nix
+++ b/nixops/jupiter-hardware-configuration.nix
@ -1,43 +0,0 @@
-# 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/nixops.nix
+++ b/nixops/nixops.nix
@ -6,6 +6,8 @@
  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; };
  zeus = import ./desktop.nix { host = "zeus"; };
  hera = import ./desktop.nix { host = "hera"; };
@ -13,10 +15,6 @@
  chiron = import ./desktop.nix { host = "chiron"; };
  old-nixbld = import ./desktop.nix { host = "old-nixbld"; };
  franz = import ./desktop.nix { host = "franz"; };
+  juno = import ./desktop.nix { host = "juno"; };
  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
@ -21,7 +21,6 @@
  fileSystems."/boot" =
    { device = "/dev/disk/by-uuid/D0A3-DDAE";
      fsType = "vfat";
-      options = [ "fmask=0022" "dmask=0022" ];
    };

  powerManagement.cpuFreqGovernor = lib.mkDefault "powersave";
--- a/nixops/rc-hardware-configuration.nix
+++ b/nixops/rc-hardware-configuration.nix
@ -1,50 +0,0 @@
-# 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.nix
+++ b/nixops/rpi.nix
@ -24,7 +24,6 @@ in
  };

  services.openssh.enable = true;
-  services.openssh.authorizedKeysInHomedir = false;
  services.openssh.settings.PasswordAuthentication = false;
  services.openssh.settings.GatewayPorts = "clientspecified";
  services.openssh.extraConfig =
@ -35,12 +34,15 @@ 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; }) // {
+  users.extraUsers = (import ./common-users.nix { inherit pkgs; }) //
+    (pkgs.lib.optionalAttrs experimental-users (import ./experimental-users.nix { inherit pkgs; })) // {
    nixbld = {
      isNormalUser = true;
      extraGroups = ["plugdev" "dialout"];
--- a/nixops/saturn-hardware-configuration.nix
+++ b/nixops/saturn-hardware-configuration.nix
@ -1,43 +0,0 @@
-# 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
@ -1,41 +0,0 @@
-{ 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
@ -18,7 +18,6 @@
  fileSystems."/boot" =
    { device = "/dev/disk/by-uuid/91B4-E546";
      fsType = "vfat";
-      options = [ "fmask=0022" "dmask=0022" ];
    };

  swapDevices = [ ];
--- a/remote-ipsec.txt
+++ b/remote-ipsec.txt
@ -1,49 +0,0 @@
-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
-      }
-    }
-  }
-}