Move the complex list of selectors from .github/workflows/* to the Makefile

.github/workflows/ergo.yml

@@ -0,0 +1,54 @@
+name: irctest with Ergo
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+
+    - uses: actions/checkout@v2
+
+    - name: Set up Python 3.7
+      uses: actions/setup-python@v2
+      with:
+        python-version: 3.7
+
+    - uses: actions/setup-go@v2
+      with:
+        go-version: '~1.16'
+    - run: go version
+
+    - name: Cache dependencies
+      uses: actions/cache@v2
+      with:
+        path: |
+          ~/.cache
+          $GITHUB_WORKSPACE/ergo
+        key: ${{ runner.os }}-ergo
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install pytest -r requirements.txt
+
+    - name: Checkout Ergo
+      uses: actions/checkout@v2
+      with:
+        repository: ergochat/ergo
+        ref: irctest_stable
+        path: ergo
+
+    - name: Build Ergo
+      run: |
+        cd $GITHUB_WORKSPACE/ergo/
+        make build
+        make install
+
+    - name: Test with pytest
+      run: |
+        PATH=~/go/bin:$PATH make ergo