From a293fab959bdef2593b82aaf02b7b2192e0907f3 Mon Sep 17 00:00:00 2001
From: Piotr Semenov <piotr.k.semenov@gmail.com>
Date: Thu, 9 May 2024 23:17:04 +0400
Subject: [PATCH] fix: nix flake build freezes in github action, so try magic
 nix cache + switch to nixos-stable

---
 .github/workflows/build-artifacts.yml | 2 +-
 Vagrantfile                           | 8 +++++---
 flake.lock                            | 2 +-
 flake.nix                             | 2 +-
 nixpkgs.nix                           | 7 +++++++
 shell.nix                             | 2 +-
 6 files changed, 16 insertions(+), 7 deletions(-)
 create mode 100644 nixpkgs.nix

diff --git a/.github/workflows/build-artifacts.yml b/.github/workflows/build-artifacts.yml
index f2a33a0..844dd03 100644
--- a/.github/workflows/build-artifacts.yml
+++ b/.github/workflows/build-artifacts.yml
@@ -10,7 +10,7 @@ on:
     paths-ignore: [ "*.md" ]
 
 jobs:
-  Build-VSIX:
+  Compile-All:
     runs-on: macos-12
     steps:
       - uses: actions/checkout@v4
diff --git a/Vagrantfile b/Vagrantfile
index 17c8546..0a17fa0 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -16,9 +16,11 @@ Vagrant.configure("2") do |config|
 
   config.vm.provision "shell", privileged: false, inline: <<-'SHELL'
     cd /vagrant/
-    echo "statix check &&\
-      nix flake check --impure &&\
-      cp \$(nix build --impure --no-link --print-out-paths)/parigp* ./syntaxes/" |\
+    nix --version
+    df -h
+    echo "statix check && \
+      nix flake check --impure && \
+      cp \$(nix build --impure --no-link --print-out-paths)/parigp* ./syntaxes/" | \
       nix-shell --run bash
   SHELL
 end
diff --git a/flake.lock b/flake.lock
index a5964e1..c1db0ae 100644
--- a/flake.lock
+++ b/flake.lock
@@ -11,7 +11,7 @@
       },
       "original": {
         "owner": "nixos",
-        "ref": "nixos-unstable",
+        "ref": "nixos-stable",
         "repo": "nixpkgs",
         "type": "github"
       }
diff --git a/flake.nix b/flake.nix
index 9c5fcff..3a772b2 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,7 +1,7 @@
 {
   description = "Builds TextMate grammar for latest version of PARI/GP";
 
-  inputs.nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+  inputs.nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-stable";
 
   outputs = { self, nixpkgs }:
     let
diff --git a/nixpkgs.nix b/nixpkgs.nix
new file mode 100644
index 0000000..b0652ee
--- /dev/null
+++ b/nixpkgs.nix
@@ -0,0 +1,7 @@
+let
+  lock = (builtins.fromJSON (builtins.readFile ./flake.lock)).nodes.nixpkgs.locked;
+in
+import (fetchTarball {
+  url = "https://github.com/nixos/nixpkgs/archive/${lock.rev}.tar.gz";
+  sha256 = lock.narHash;
+})
diff --git a/shell.nix b/shell.nix
index 4e43f44..595e18d 100644
--- a/shell.nix
+++ b/shell.nix
@@ -1,4 +1,4 @@
-{ pkgs ? import <nixpkgs> {} }:
+{ pkgs ? (import ./nixpkgs.nix) {} }:
 pkgs.mkShell {
   NIX_CONFIG = "experimental-features = nix-command flakes";
   nativeBuildInputs = with pkgs; [