update ci

.github/workflows/nix.yml

@@ -9,8 +9,12 @@ on:
     - humble
 
 jobs:
-  nix:
-    runs-on: "ubuntu-latest"
+  tests:
+    name: "Nix build on ${{ matrix.os }}"
+    runs-on: "${{ matrix.os }}-latest"
+    strategy:
+      matrix:
+        os: [ubuntu]
     steps:
       - uses: actions/checkout@v4
       - uses: cachix/install-nix-action@v30

.github/workflows/update-flake-lock.yml

@@ -3,7 +3,7 @@ name: update-flake-lock
 on:
   workflow_dispatch:
   schedule:
-    - cron: '0 11 10 * *'
+    - cron: '0 11 8 * *'
 
 jobs:
   lockfile:

.mergify.yml

@@ -0,0 +1,12 @@
+pull_request_rules:
+  - name: merge automatically when CI passes and PR is approved
+    conditions:
+      - check-success = "Nix build on ubuntu"
+      - check-success = "pre-commit.ci - pr"
+      - or:
+        - author = dependabot[bot]
+        - author = github-actions[bot]
+        - author = hrp2-14
+        - author = pre-commit-ci[bot]
+    actions:
+      merge: