From 79dce0618068a96b678531d069099fae1ebc8165 Mon Sep 17 00:00:00 2001
From: Terje Larsen <terlar@gmail.com>
Date: Wed, 11 Sep 2024 01:19:46 +0200
Subject: [PATCH] ci: conditional jobs

---
 .github/workflows/ci.yml | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fad5ce4..5921407 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,6 +10,35 @@ on:
       - main
 
 jobs:
+  changes:
+    runs-on: ubuntu-latest
+    outputs:
+      src: ${{ steps.changes.outputs.src }}
+      infra: ${{ steps.changes.outputs.infra }}
+    steps:
+      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4
+      - uses: dorny/paths-filter@v2
+        id: changes
+        with:
+          filters: |
+            nixos-configuration:
+              - flake.nix
+              - flake.lock
+              - 'configurations/nixos/**'
+              - 'modules/nixos/**'
+              - 'modules/home/**'
+            home-configuration:
+              - flake.nix
+              - flake.lock
+              - 'configurations/home/**'
+              - 'modules/home/**'
+            installer-yubikey:
+              - flake.nix
+              - flake.lock
+              - 'configurations/nixos/installer-yubikey/**'
+              - 'packages/drduh-gpg-conf/**'
+              - 'packages/drduh-yubikey-guide/**'
+
   check:
     runs-on: ubuntu-latest
     steps:
@@ -33,6 +62,8 @@ jobs:
         run: nix flake check
 
   build-home-configuration:
+    needs: changes
+    if: ${{ needs.changes.outputs.home-configuration == 'true' }}
     strategy:
       matrix:
         include:
@@ -61,6 +92,8 @@ jobs:
           nix build --print-build-logs .#homeConfigurations.${{ matrix.username }}.activationPackage
 
   build-nixos-configuration:
+    needs: changes
+    if: ${{ needs.changes.outputs.nixos-configuration == 'true' }}
     strategy:
       matrix:
         host:
@@ -89,6 +122,8 @@ jobs:
           nix build --print-build-logs .#nixosConfigurations.${{ matrix.host }}.config.system.build.toplevel
 
   build-iso:
+    needs: changes
+    if: ${{ needs.changes.outputs.installer-yubikey == 'true' }}
     strategy:
       matrix:
         name: