From 78e10ac43f4efbf6ce344968da313066c8dffa63 Mon Sep 17 00:00:00 2001
From: Thibault Gagnaux <tgagnaux@gmail.com>
Date: Wed, 24 Mar 2021 20:26:32 +0100
Subject: [PATCH] Uses nix flakes as described
 [here](https://github.com/cachix/install-nix-action)

---
 .github/workflows/test.yml | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 4226c5a..e716b92 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -38,17 +38,16 @@ jobs:
     timeout-minutes: 60
     steps:
     - uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
     - uses: cachix/install-nix-action@v12
+      with:
+         install_url: https://github.com/numtide/nix-flakes-installer/releases/download/nix-2.4pre20210207_fd6eaa1/install
+         extra_nix_config: |
+           experimental-features = nix-command flakes
     - run: |
-        nix-channel --add https://nixos.org/channels/nixpkgs-unstable nixpkgs
-        nix-channel --update
-    - run: |
-        NIX_PATH=$HOME/.nix-defexpr/channels nix-shell -A installer
-        echo "TODO installed doesn't support flakes, handle multi-user install"
-    - run: |
-        nix-build channel:nixpkgs-unstable -A nixUnstable -o nix-unstable
-        ./nix-unstable/bin/nix --experimental-features 'nix-command flakes' registry add darwin $PWD
-        ./nix-unstable/bin/nix --experimental-features 'nix-command flakes' build ./modules/examples#darwinConfigurations.simple.system
+        nix registry add darwin $PWD
+        nix build ./modules/examples#darwinConfigurations.simple.system
     - run: |
         ./result/sw/bin/darwin-rebuild switch --flake ./modules/examples#simple
     - run: |