add github action for checking build

.github/workflows/build.yml

@@ -0,0 +1,55 @@
+name: build
+on:
+  push:
+  pull_request:
+  schedule:
+    # weekly builds to make sure it works with the latest version of Guix
+    - cron: '39 3 * * 0'
+jobs:
+  build:
+    name: make distcheck
+    runs-on: ubuntu-latest
+    steps:
+      - name: Install GNU Guix
+        uses: PromyLOPh/[email protected]
+        with:
+          pullAfterInstall: false
+      - name: Describe Guix
+        run: echo "guix-commit=$(guix describe | grep commit | join -a1 -o1.2 - /dev/null)" >> $GITHUB_OUTPUT
+        id: guix-commit
+      - name: Guix cache
+        id: guix-cache
+        uses: actions/cache@v3
+        with:
+          path: ~/.cache/guix
+          key: guix-cache-${{ steps.guix-commit.outputs.guix-commit }}
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          submodules: true
+      - name: Build Guix environment
+        if: steps.guix-cache.outputs.cache-hit != 'true'
+        run: |
+          mkdir -p ~/.cache/guix
+          guix environment -l guix.scm --root=env -- echo done
+          guix archive --export --recursive $(readlink -f env) > ~/.cache/guix/env
+          cp /etc/guix/signing-key.pub ~/.cache/guix/
+      - name: Authorize cached signing key
+        if: steps.guix-cache.outputs.cache-hit == 'true'
+        run: |
+          cat ~/.cache/guix/signing-key.pub | sudo guix archive --authorize
+      - name: Import Guix environment
+        if: steps.guix-cache.outputs.cache-hit == 'true'
+        run: |
+          du -sh ~/.cache/guix/env
+          cat ~/.cache/guix/env | sudo guix archive --import
+      - name: Bootstrap
+        run: guix shell -D -f guix.scm -- ./bootstrap.sh
+      - name: Configure
+        run: guix shell -D -f guix.scm -- ./configure
+      - name: Build
+        run: guix shell -D -f guix.scm -- make -j
+      - name: Distcheck
+        env:
+          VERBOSE: "true"
+        run: guix shell -D -f guix.scm -- make distcheck