From a579f76c93c464d6e6b19c77644b2dd0663b05e2 Mon Sep 17 00:00:00 2001
From: Marek Fajkus <marek.faj@gmail.com>
Date: Sat, 13 Jan 2024 20:23:32 +0100
Subject: [PATCH] use builtin to fetch pinned nixpkgs (#88)

---
 .github/workflows/build.yml | 6 +++---
 default.nix                 | 6 ++----
 2 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 515cfb6..c833c27 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -8,12 +8,12 @@ jobs:
   build-all:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2.3.4
-      - uses: cachix/install-nix-action@v12
+      - uses: actions/checkout@v4
+      - uses: cachix/install-nix-action@v22
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - run: nix-shell -p elmPackages.elm-format --run "elm-format --validate client"
-      - uses: cachix/cachix-action@v8
+      - uses: cachix/cachix-action@v12
         with:
           name: planning-game
           authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
diff --git a/default.nix b/default.nix
index 6a1af54..0da3908 100644
--- a/default.nix
+++ b/default.nix
@@ -1,10 +1,8 @@
 let
   nixpkgs =
     # updated 28/08/20
-    (import <nixpkgs> {}).fetchFromGitHub {
-      owner = "NixOS";
-      repo = "nixpkgs-channels";
-      rev = "c59ea8b8a0e7f927e7291c14ea6cd1bd3a16ff38";
+    builtins.fetchTarball {
+      url = "https://github.com/NixOS/nixpkgs-channels/archive/c59ea8b.tar.gz";
       sha256 = "1ak7jqx94fjhc68xh1lh35kh3w3ndbadprrb762qgvcfb8351x8v";
     };