Refactor CI with composite action

Author: ntkme

.github/actions/setup-nix/action.yml

@@ -0,0 +1,39 @@
+name: Setup Nix
+description: Initialize nixos/nix container
+inputs:
+  image:
+    description: 'Set up an environment with specified nix container image'
+    required: false
+    default: 'docker.io/nixos/nix:latest'
+  packages:
+    description: 'Set up an environment in which the specified packages are present'
+    required: false
+    default: ''
+runs:
+  using: composite
+  steps:
+    - run: /usr/bin/docker pull ${{ inputs.image }}
+      shell: bash
+
+    - id: container
+      run: echo "id=$(/usr/bin/docker create --workdir "$GITHUB_WORKSPACE" -e GITHUB_ACTIONS=true -e CI=true -v /var/run/docker.sock:/var/run/docker.sock -v "$GITHUB_WORKSPACE:$GITHUB_WORKSPACE" --entrypoint sleep ${{ inputs.image }} infinity)" | tee -a "$GITHUB_OUTPUT"
+      shell: bash
+
+    - run: /usr/bin/docker start ${{ steps.container.outputs.id }}
+      shell: bash
+
+    - run: /usr/bin/docker ps --all --filter id=${{ steps.container.outputs.id }} --filter status=running --no-trunc --format "{{.ID}} {{.Status}}"
+      shell: bash
+
+    - run: /usr/bin/docker inspect --format "{{range .Config.Env}}{{println .}}{{end}}" ${{ steps.container.outputs.id }}
+      shell: bash
+
+    - run: |
+        mkdir -p "$HOME/.local/bin" && tee "$HOME/.local/bin/bash" <<'EOF' && chmod a+x "$HOME/.local/bin/bash"
+        #!/bin/bash --
+        exec /usr/bin/docker exec -i -w "$PWD" ${{ steps.container.outputs.id }} nix-shell --packages ${{ inputs.packages }} --run "exec bash$(test $# -gt 0 && printf ' %q' "${@:1:$#-1}")" <"${@:$#}"
+        EOF
+      shell: bash
+
+    - run: env
+      shell: bash

.github/actions/setup-vm/action.yml

@@ -0,0 +1,38 @@
+name: Setup vm
+description: Initialize virtual machine
+inputs:
+  os:
+    description: 'Set up an environment with specified os'
+    required: true
+  run:
+    description: 'Set up an environment with specified run command'
+    required: false
+    default: ''
+runs:
+  using: composite
+  steps:
+    - uses: vmactions/freebsd-vm@v1
+      if: inputs.os == 'freebsd'
+      with:
+        copyback: false
+        usesh: true
+        prepare: pkg install -y bash
+        run: set -e; ${{ inputs.run }}
+
+    - uses: vmactions/openbsd-vm@v1
+      if: inputs.os == 'openbsd'
+      with:
+        copyback: false
+        usesh: true
+        prepare: pkg_add bash
+        run: set -e; ${{ inputs.run }}
+
+    - run: |
+        mkdir -p "$HOME/.local/bin" && tee "$HOME/.local/bin/bash" <<'EOF' && chmod a+x "$HOME/.local/bin/bash"
+        #!/bin/bash --
+        exec ssh ${{ inputs.os }} "cd $(printf %q "$PWD") && exec bash$(test $# -gt 0 && printf ' %q' "${@:1:$#-1}")" <"${@:$#}"
+        EOF
+      shell: bash
+
+    - run: env
+      shell: bash

.github/dependabot.yml

@@ -1,7 +1,9 @@
 version: 2
 updates:
   - package-ecosystem: "github-actions"
-    directory: "/"
+    directories:
+      - "/"
+      - "/.github/actions/*/"
     schedule:
       interval: "daily"
 

.github/workflows/build.yml

@@ -70,51 +70,36 @@ jobs:
             container:
               image: docker.io/nixos/nix:latest
           - os: ubuntu-latest
-            vm: freebsd
+            vm:
+              os: freebsd
+              run: pkg install -y node npm protobuf ruby rubygem-bundler rubygem-rake
           - os: ubuntu-latest
-            vm: openbsd
+            vm:
+              os: openbsd
+              run: |
+                ruby=$(pkg_info -Q ruby | grep '^ruby-[0-9]' | sort -rV | head -n 1)
+                pkg_add node protobuf "$ruby"
+                pkg_info "$ruby" | grep 'ln -sf' | $SHELL
 
     steps:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Setup vm (freebsd)
-        if: matrix.vm == 'freebsd'
-        uses: vmactions/freebsd-vm@v1
-
-      - name: Setup vm (openbsd)
-        if: matrix.vm == 'openbsd'
-        uses: vmactions/openbsd-vm@v1
-
-      - name: Setup vm shell
+      - name: Initialize vm
         if: matrix.vm
-        run: |
-          mkdir -p "$HOME/.local/bin" && tee "$HOME/.local/bin/bash" <<'EOF' && chmod a+x "$HOME/.local/bin/bash"
-          #!/bin/bash --
-          exec ssh ${{ matrix.vm }} "cd $(printf %q "$PWD") && exec \"\$SHELL\"$(test $# -gt 0 && printf ' %q' "${@:1:$#-1}")" <"${@:$#}"
-          EOF
+        uses: ./.github/actions/setup-vm
+        with:
+          os: ${{ matrix.vm.os }}
+          run: ${{ matrix.vm.run }}
 
-      - name: Setup nix-shell
+      - name: Initialize nix
         if: matrix.container.image == 'docker.io/nixos/nix:latest'
-        run: |
-          docker run --rm -d --name nix --volume "$PWD:$PWD" --entrypoint sleep ${{ matrix.container.image }} infinity
-          mkdir -p "$HOME/.local/bin" && tee "$HOME/.local/bin/bash" <<'EOF' && chmod a+x "$HOME/.local/bin/bash"
-          #!/bin/bash --
-          exec docker exec -i -w "$PWD" nix nix-shell --packages ruby --run "exec \"\$SHELL\"$(test $# -gt 0 && printf ' %q' "${@:1:$#-1}")" <"${@:$#}"
-          EOF
-
-      - name: Install dependencies (freebsd)
-        if: matrix.vm == 'freebsd'
-        run: pkg install -y node npm protobuf ruby rubygem-bundler rubygem-rake
-
-      - name: Install dependencies (openbsd)
-        if: matrix.vm == 'openbsd'
-        run: |
-          ruby=$(pkg_info -Q ruby | grep '^ruby-[0-9]' | sort -rV | head -n 1)
-          pkg_add node protobuf "$ruby"
-          pkg_info "$ruby" | grep 'ln -sf' | $SHELL
+        uses: ./.github/actions/setup-nix
+        with:
+          image: ${{ matrix.container.image }}
+          packages: ruby
 
-      - name: Install dependencies (alpine)
+      - name: Install dependencies
         if: endsWith(matrix.container.image, ':alpine') || endsWith(matrix.container.image, '-alpine')
         run: apk add build-base