From f7dd925234eb26f91052352a0b181288b347f09b Mon Sep 17 00:00:00 2001
From: Stephan Maka <sm@m-labs.hk>
Date: Thu, 11 Mar 2021 19:12:46 +0100
Subject: [PATCH] artiq-fast: do update nixpkgs.nix

---
 artiq-fast.nix | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/artiq-fast.nix b/artiq-fast.nix
index c27a8de..d861692 100644
--- a/artiq-fast.nix
+++ b/artiq-fast.nix
@@ -30,6 +30,22 @@ let
     EOF
     echo "{ stdenv, git, fetchgit }: \"$MAJOR_VERSION.$COMMIT_COUNT.`cut -c1-8 <<< $REV`$SUFFIX\"" > $out/pkgs/artiq-version.nix
     echo "{ stdenv, git, fetchgit }: \"$TIMESTAMP\"" > $out/pkgs/artiq-timestamp.nix
+
+    REV=`git --git-dir ${<nixpkgs>}/.git rev-parse HEAD`
+    NIXPKGS_CLEAN=`mktemp -d`
+    cp -a ${<nixpkgs>}/. $NIXPKGS_CLEAN
+    chmod -R 755 $NIXPKGS_CLEAN/.git
+    chmod 755 $NIXPKGS_CLEAN
+    rm -rf $NIXPKGS_CLEAN/.git
+    HASH=`nix-hash --type sha256 --base32 $NIXPKGS_CLEAN`
+    cat > $out/pkgs/nixpkgs.nix << EOF
+    { fetchgit }:
+    import (fetchgit {
+      url = "https://github.com/nixos/nixpkgs.git";
+      rev = "$REV";
+      sha256 = "$HASH";
+    })
+    EOF
     '';
   artiqpkgs = import "${generatedNix}/default.nix" { inherit pkgs; };
   artiqVersion = import "${generatedNix}/pkgs/artiq-version.nix" (with pkgs; { inherit stdenv fetchgit git; });