update python version and dependencies/tooling

.github/workflows/lektor-build-deploy.yml

@@ -8,11 +8,11 @@ jobs:
    - name: setup python version
      uses: actions/setup-python@v1
      with:
-      python-version: 3.7
+      python-version: 3.9
    - name: Install dependencies
      run: |
       pip install pipenv
-      pipenv install
+      pipenv sync
       pipenv run lektor build -f webpack
    - name: Deploy to production
      if: github.ref == 'refs/heads/master'

Pipfile

@@ -4,15 +4,16 @@ url = "https://pypi.org/simple"
 verify_ssl = true
 
 [packages]
-black = "==19.10b0"
+black = "==20.8b1"
 # Cryptography 3.4+ requires Rust to build
 # https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst
 cryptography = "==3.3.2"
 flake8 = "*"
+isort = "*"
 lektor = "*"
 # Werkzeug added and pinned to mitigate this issue:
 # https://github.com/nixjdm/lektor-atom/issues/23
 Werkzeug = "==0.16.1"
 
 [requires]
-python_version = "3"
+python_version = "3.9"

pyproject.toml

@@ -1,8 +1,25 @@
 [tool.black]
-line-length = 79
-exclude = '''
-/(
-      \.git
-    | webpack
-)/
+force-exclude = '''
+(
+  /node_modules/
+  | /venv/
+)
 '''
+line-length = 79
+target-version = ['py38']
+
+
+# [tool.flake8]
+#   config: .flake8
+# also see: https://gitlab.com/pycqa/flake8/-/issues/428
+
+
+[tool.isort]
+import_heading_firstparty = 'First-party/Local'
+import_heading_future = 'Future'
+import_heading_stdlib = 'Standard library'
+import_heading_thirdparty = 'Third-party'
+line_length = 79
+multi_line_output = 3
+no_lines_before = 'LOCALFOLDER'
+profile = 'black'