GitHub Actions tweaks (#422)

Author: Simon Mönch

.github/workflows/build.yml

@@ -2,30 +2,38 @@ name: Build
 
 on:
     push:
-        branches: [master]
+        branches: [ master ]
     pull_request:
     release:
-        types: [created]
+        types: [ created ]
 
 jobs:
     tests:
         runs-on: ubuntu-latest
         name: Build and test
         strategy:
             matrix:
-                php: ["7.2", "7.4"]
-                composer-version: ["1"]
-                coverage: ["none"]
-                publish-phar: [false]
+                php: [ "7.2", "7.4" ]
+                composer-version: [ "1" ]
+                coverage: [ "none" ]
+                publish-phar: [ false ]
+                git-fetch-depth: [ 1 ]
                 include:
                     -   php: "7.3"
+                        composer-version: "1"
                         coverage: "pcov"
                         publish-phar: true
+                        git-fetch-depth: 0 # box/composer needs history to determine a recent git version
                     -   php: "7.4"
                         composer-version: "2"
+                        coverage: "none"
+                        publish-phar: false
+                        git-fetch-depth: 1
 
         steps:
             -   uses: actions/checkout@v2
+                with:
+                    fetch-depth: "${{ matrix.git-fetch-depth }}"
 
             -   name: Setup PHP
                 uses: shivammathur/setup-php@v2
@@ -35,8 +43,21 @@ jobs:
                     tools: "composer:v${{ matrix.composer-version }}"
                     coverage: "${{ matrix.coverage }}"
 
+            -   name: Get composer cache directory
+                id: composercache
+                run: echo "::set-output name=dir::$(composer config cache-files-dir)"
+
+            -   name: Cache composer dependencies
+                uses: actions/cache@v2
+                with:
+                    path: ${{ steps.composercache.outputs.dir }}
+                    key: ${{ runner.os }}-composer-cache-${{ hashFiles('**/composer.lock') }}
+                    restore-keys: ${{ runner.os }}-composer-cache-
+
             -   name: Set composer root version
-                run: source .composer-root-version
+                run: |
+                    source .composer-root-version
+                    echo "COMPOSER_ROOT_VERSION=${COMPOSER_ROOT_VERSION}" >> $GITHUB_ENV
 
             -   name: Install dependencies
                 run: composer install --no-interaction --no-progress --no-suggest --prefer-dist
@@ -45,24 +66,28 @@ jobs:
                 run: make check-composer-root-version
 
             -   name: Run tests (coverage)
-                if: matrix.publish-phar
+                if: matrix.coverage == 'pcov'
                 run: make tc
 
+            -   name: install tree
+                if: matrix.publish-phar == true
+                run: sudo apt-get install -y tree
+
             -   name: Run tests (e2e)
-                if: matrix.publish-phar
+                if: matrix.publish-phar == true
                 run: make e2e
 
             -   name: Run tests
-                if: !matrix.publish-phar
+                if: matrix.publish-phar == false
                 run: make tu
 
             -   name: Run phpstan
-                if: !matrix.publish-phar
+                if: matrix.publish-phar == false
                 run: make phpstan
 
             -   uses: actions/upload-artifact@v1
                 name: Publish the PHAR
-                if: matrix.publish-phar
+                if: matrix.publish-phar == true
                 with:
                     name: php-scoper.phar
                     path: bin/php-scoper.phar
@@ -77,6 +102,7 @@ jobs:
                 with:
                     name: php-scoper.phar
                     path: .
+
             -   name: Upload php-scoper.phar
                 uses: actions/upload-release-asset@v1
                 env: