Improve CI config

Author: devmotion

.github/workflows/ci.yml

@@ -4,11 +4,14 @@ on:
   push:
     branches:
       - master
-      - dev
-      - 'releases/**'
     tags: '*'
   pull_request:
-  release:
+
+concurrency:
+  # Skip intermediate builds: always.
+  # Cancel intermediate builds: only if it is a pull request build.
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
 
 jobs:
   test:
@@ -24,19 +27,18 @@ jobs:
           - 'nightly'
         os:
           - ubuntu-latest
-          - macOS-latest
-          - windows-latest
         arch:
           - x64
-          - x86
-        exclude:
-          # 32-bit Julia binaries are not available on macOS
-          - os: macOS-latest
-            arch: x86
-          - os: windows-latest
-            arch: x86
-          - version: nightly
+        include:
+          - version: 1
+            os: ubuntu-latest
             arch: x86
+          - version: 1
+            os: macOS-latest
+            arch: x64
+          - version: 1
+            os: windows-latest
+            arch: x64
     steps:
       - uses: actions/checkout@v2
       - uses: julia-actions/setup-julia@latest
@@ -55,11 +57,13 @@ jobs:
             ${{ runner.os }}-test-
             ${{ runner.os }}-
       - uses: julia-actions/julia-buildpkg@latest
-        env:
-          PYTHON: 'Conda'
       - uses: julia-actions/julia-runtest@latest
+        with:
+          coverage: ${{ matrix.version == '1' && matrix.os == 'ubuntu-latest' && matrix.arch == 'x64' }}
       - uses: julia-actions/julia-processcoverage@v1
+        if: matrix.version == '1' && matrix.os == 'ubuntu-latest' && matrix.arch == 'x64'
       - uses: codecov/codecov-action@v1
+        if: matrix.version == '1' && matrix.os == 'ubuntu-latest' && matrix.arch == 'x64'
         with:
           file: lcov.info
   docs:
@@ -82,8 +86,6 @@ jobs:
             ${{ runner.os }}-test-
             ${{ runner.os }}-
       - uses: julia-actions/julia-buildpkg@latest
-        env:
-          PYTHON: 'Conda'
       - uses: julia-actions/julia-docdeploy@latest
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}