drop py3.6. Misc housekeeping

.github/workflows/build.yml

@@ -19,10 +19,9 @@ jobs:
     strategy:
       matrix:
         python-version:
-          - 3.6
-          - 3.7
-          - 3.8
-          - 3.9
+          - "3.7"
+          - "3.8"
+          - "3.9"
           - "3.10"
           - "3.11"
           - "3.12"
@@ -30,20 +29,17 @@ jobs:
           - os: ubuntu-latest
 
           # older versions need older OS
-          - python-version: 3.6
-            os: ubuntu-20.04
+          - python-version: "3.7"
+            os: ubuntu-22.04
+
+          - python-version: "3.8"
+            os: ubuntu-22.04
 
     runs-on: ${{ matrix.os }}
 
     steps:
       - uses: actions/checkout@v3
 
-      - name: Set up Python 3.7 to bootstrap py3.6
-        if: ${{ matrix.python-version == '3.6' }}
-        uses: actions/setup-python@v4
-        with:
-          python-version: 3.7
-
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
         with:
@@ -51,22 +47,11 @@ jobs:
 
       - name: Install dependencies
         run: |
-          python -m pip install -U -r tests/requirements.txt
-
-      # Python 3.6 cannot install directly from a pyproject.toml
-      # Instead, build a wheel from py3.7 and then install it
-      - name: Install via wheel
-        if: ${{ matrix.python-version == '3.6' }}
-        run: |
-          python3.7 -m pip install build
-          python3.7 -m build
-          python --version
-          python -m pip install ./dist/*.whl
+          python -m pip install -r tests/requirements.txt
 
       - name: Install
-        if: ${{ matrix.python-version != '3.6' }}
         run: |
-          python -m pip install .
+          python -m pip install ".[cli]"
 
       - name: Test
         run: |
@@ -95,7 +80,7 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           COVERALLS_PARALLEL: true
         run: |
-          python -m pip install -U coveralls>=3.0.0
+          python -m pip install coveralls>=3.0.0
           coveralls --service=github --finish
 
 #-------------------------------------------------------------------------------
@@ -110,11 +95,11 @@ jobs:
 
       - name: Install dependencies
         run: |
-          python -m pip install -U pylint
+          python -m pip install -r tests/requirements.txt
 
       - name: Install
         run: |
-          python -m pip install .
+          python -m pip install ".[cli]"
 
       - name: Run Lint
         run: |
@@ -132,7 +117,11 @@ jobs:
 
       - name: Install dependencies
         run: |
-          python -m pip install mypy types-setuptools
+          python -m pip install -r tests/requirements.txt
+
+      - name: Install
+        run: |
+          python -m pip install ".[cli]"
 
       - name: Type Check
         run: |
@@ -156,13 +145,14 @@ jobs:
 
       - name: Install dependencies
         run: |
-          python -m pip install -U build
+          python -m pip install build
 
       - name: Build sdist
         run: python -m build
 
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
+          name: dist
           path: |
             dist/*.tar.gz
             dist/*.whl
@@ -180,9 +170,9 @@ jobs:
     # Only publish when a GitHub Release is created.
     if: github.event_name == 'release'
     steps:
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         with:
-          name: artifact
+          name: dist
           path: dist
 
       - uses: pypa/gh-action-pypi-publish@release/v1