From 3f4618d4d2291e16369fbb4ecddd35d6a841833e Mon Sep 17 00:00:00 2001
From: aprilthepink <aprl@acab.dev>
Date: Tue, 9 Apr 2024 20:16:59 +0200
Subject: [PATCH] [feat] GH nix builds

---
 .github/workflows/nix-flake.yml | 33 +++++++++++++++++++++++++++++++++
 flake.nix                       |  3 +++
 2 files changed, 36 insertions(+)
 create mode 100644 .github/workflows/nix-flake.yml

diff --git a/.github/workflows/nix-flake.yml b/.github/workflows/nix-flake.yml
new file mode 100644
index 0000000..6c2e776
--- /dev/null
+++ b/.github/workflows/nix-flake.yml
@@ -0,0 +1,33 @@
+name: Nix Flake actions
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+      - feat/*
+
+jobs:
+  nix-matrix:
+    runs-on: ubuntu-latest
+    outputs:
+      matrix: ${{ steps.set-matrix.outputs.matrix }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: cachix/install-nix-action@v24
+      - id: set-matrix
+        name: Generate Nix Matrix
+        run: |
+          set -Eeu
+          matrix="$(nix eval --json '.#githubActions.matrix')"
+          echo "matrix=$matrix" >> "$GITHUB_OUTPUT"
+
+  nix-build:
+    needs: nix-matrix
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix: ${{fromJSON(needs.nix-matrix.outputs.matrix)}}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: cachix/install-nix-action@v24
+      - run: nix build -L ".#${{ matrix.attr }}"
diff --git a/flake.nix b/flake.nix
index f8c9ec4..36d40c2 100644
--- a/flake.nix
+++ b/flake.nix
@@ -22,6 +22,9 @@
       imports = [
         inputs.treefmt-nix.flakeModule
       ];
+      flake = { config, self', inputs', ... }: {
+        githubActions = inputs.nix-github-actions.lib.mkGithubMatrix { checks = self'.packages; };
+      };
       perSystem = { config, self', pkgs, lib, system, ... }:
         let
           cargoToml = builtins.fromTOML (builtins.readFile ./Cargo.toml);