Add flake8 to github workflows

.github/workflows/lint.yml

@@ -0,0 +1,27 @@
+name: Lint
+
+on:
+  pull_request:
+    branches: [main]
+    paths:
+      - '*.py'
+
+jobs:
+  flake8:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Setup Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: '3.10'
+          architecture: x64
+      - name: Checkout pyremap
+        uses: actions/checkout@v3
+      - name: Install flake8
+        run: pip install flake8
+      - name: Run flake8
+        uses: suo/flake8-github-action@releases/v1
+        with:
+          checkName: 'flake8'   # NOTE: this needs to be the same as the job name
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

azure-pipelines.yml

@@ -34,8 +34,11 @@ jobs:
       eval "$(conda shell.bash hook)"
       conda config --add channels conda-forge
       conda config --set channel_priority strict
-      conda install --yes conda conda-build mamba boa
-      conda update --all --yes
+      conda update --yes --all
+      conda install --yes mamba
+      # workaround based on recent failures
+      rm /usr/share/miniconda/pkgs/cache/*.json
+      mamba install --yes conda-build boa
     displayName: Update conda base environment
 
   - bash: |
@@ -161,8 +164,9 @@ jobs:
       eval "$(conda shell.bash hook)"
       conda config --add channels conda-forge
       conda config --set channel_priority strict
-      conda install --yes conda conda-build mamba boa
-      conda update --all --yes
+      conda update --yes --all
+      conda install --yes mamba
+      mamba install --yes conda-build boa
     displayName: Update conda base environment
 
   - bash: |