github: Add nightly workflow

.github/workflows/nightly.yml

@@ -0,0 +1,80 @@
+name: nightly
+
+on:
+  push:
+    #branches:
+    #  - master
+    #paths:
+    #  - '**/meson.build'
+    #  - '**.c'
+    #  - '**.h'
+    #  - 'subprojects/*.wrap'
+
+concurrency:
+    group: ${{ github.ref }}
+    cancel-in-progress: ${{ github.ref != 'refs/heads/master' }}
+
+jobs:
+  build:
+    uses: ./.github/workflows/package.yml
+  tag:
+    runs-on: ubuntu-latest
+    outputs:
+      tag_name: ${{ steps.tag_name.outputs.tag_name }}
+    permissions:
+      contents: write
+    steps:
+      - id: tag_name
+        run: echo "tag_name=nightly-$(date +%Y-%m-%d)" >> "$GITHUB_OUTPUT"
+      - uses: actions/github-script@v7
+        with:
+          script: |
+            const tag_name = '${{ steps.tag_name.outputs.tag_name }}';
+
+            github.rest.git.createRef({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              ref: `refs/tags/${tag_name}`,
+              sha: context.sha
+            }).catch(_ => {
+              github.rest.git.updateRef({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                ref: `tags/${tag_name}`,
+                sha: context.sha
+              });
+            })
+  release:
+    runs-on: ubuntu-latest
+    needs:
+      - build
+      - tag
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          name: packages
+      - id: create-release
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const release = await github.rest.repos.createRelease({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              tag_name: '${{ needs.tag.outputs.tag_name }}',
+              prerelease: true
+            });
+            const globber = await glob.create('*.pkg.tar.zst');
+            const files = await globber.glob();
+            const fs = require('fs');
+
+            for (const file of files) {
+              await github.rest.repos.uploadReleaseAsset({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                release_id: release.data.id,
+                name: file,
+                data: await fs.readFileSync(file)
+              });
+            }

.github/workflows/package.yml

@@ -1,7 +1,8 @@
 name: package
-on: [push]
+on:
+  workflow_call:
 jobs:
-  build:
+  arch:
     runs-on: ubuntu-24.04
     container:
       image: archlinux:base-devel