From c1f609ad3b50119ef556904dc25839b1aa5af79f Mon Sep 17 00:00:00 2001
From: Benjamin Staffin <benley@gmail.com>
Date: Wed, 23 Oct 2024 14:21:18 -0400
Subject: [PATCH] Try setting up github actions

---
 .github/workflows/nix-github-actions.yml | 32 ++++++++++++++++++++++++
 flake.lock                               | 21 ++++++++++++++++
 flake.nix                                | 12 +++++++--
 3 files changed, 63 insertions(+), 2 deletions(-)
 create mode 100644 .github/workflows/nix-github-actions.yml

diff --git a/.github/workflows/nix-github-actions.yml b/.github/workflows/nix-github-actions.yml
new file mode 100644
index 0000000..b9a8fdc
--- /dev/null
+++ b/.github/workflows/nix-github-actions.yml
@@ -0,0 +1,32 @@
+name: Nix Flake actions
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+jobs:
+  nix-matrix:
+    runs-on: ubuntu-latest
+    outputs:
+      matrix: ${{ steps.set-matrix.outputs.matrix }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: cachix/install-nix-action@v27
+      - id: set-matrix
+        name: Generate Nix Matrix
+        run: |
+          set -Eeu
+          matrix="$(nix eval --json '.#githubActions.matrix')"
+          echo "matrix=$matrix" >> "$GITHUB_OUTPUT"
+
+  nix-build:
+    needs: nix-matrix
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix: ${{fromJSON(needs.nix-matrix.outputs.matrix)}}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: cachix/install-nix-action@v27
+      - run: nix build -L '.#${{ matrix.attr }}'
diff --git a/flake.lock b/flake.lock
index 02a7a82..a7dcb1a 100644
--- a/flake.lock
+++ b/flake.lock
@@ -18,6 +18,26 @@
         "type": "github"
       }
     },
+    "nix-github-actions": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1720066371,
+        "narHash": "sha256-uPlLYH2S0ACj0IcgaK9Lsf4spmJoGejR9DotXiXSBZQ=",
+        "owner": "nix-community",
+        "repo": "nix-github-actions",
+        "rev": "622f829f5fe69310a866c8a6cd07e747c44ef820",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "nix-github-actions",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1726447378,
@@ -37,6 +57,7 @@
     "root": {
       "inputs": {
         "flake-utils": "flake-utils",
+        "nix-github-actions": "nix-github-actions",
         "nixpkgs": "nixpkgs"
       }
     },
diff --git a/flake.nix b/flake.nix
index e1c1913..d0d38fa 100644
--- a/flake.nix
+++ b/flake.nix
@@ -4,10 +4,16 @@
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.05";
     flake-utils.url = "github:numtide/flake-utils";
+    nix-github-actions.url = "github:nix-community/nix-github-actions";
+    nix-github-actions.inputs.nixpkgs.follows = "nixpkgs";
   };
 
-  outputs = { self, nixpkgs, flake-utils }:
-    flake-utils.lib.eachDefaultSystem (system:
+  outputs = { self, nixpkgs, flake-utils, nix-github-actions }:
+    {
+      githubActions = nix-github-actions.lib.mkGithubMatrix {
+        checks = nixpkgs.lib.getAttrs [ "x86_64-linux" ] self.checks;
+      };
+    } // flake-utils.lib.eachDefaultSystem (system:
       let
         pkgs = nixpkgs.legacyPackages.${system};
 
@@ -30,6 +36,8 @@
 
         packages.default = self.packages.${system}.${packageName};
 
+        checks.tailscale-manager = self.packages.${system}.tailscale-manager;
+
         devShells.default = pkgs.mkShell {
           buildInputs = with pkgs; [
             haskellPackages.haskell-language-server # you must build it with your ghc to work