feat: Use make as a command runner (#167)

.github/workflows/ci.yml

@@ -38,11 +38,9 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-pip-py${{ matrix.python }}-
       - name: Install dev dependencies
-        run: pip install --requirement requirements-dev.txt
-
-      # Install library
-      - name: Install result
-        run: pip install --editable .
+        # There's no virtual env in CI environment, just bypass it with a dummy
+        # env var value
+        run: VIRTUAL_ENV=none make install
 
       # Tests
       - name: Run tests
@@ -60,13 +58,13 @@ jobs:
 
       # Linters
       - name: Run flake8 (Python >= 3.10)
-        run: flake8
+        run: make lint-flake
         if: matrix.python != '3.9' && matrix.python != '3.8'
       - name: Run flake8 (Python < 3.10)
-        run: flake8 --extend-exclude tests/test_pattern_matching.py
+        run: make lint-flake-pre310
         if: matrix.python == '3.9' || matrix.python == '3.8'
       - name: Run mypy
-        run: mypy
+        run: make lint-mypy
 
       # Packaging
       - name: Build packages

Makefile

@@ -0,0 +1,25 @@
+# phony trick from https://keleshev.com/my-book-writing-setup/
+.PHONY: phony
+
+install: phony
+ifndef VIRTUAL_ENV
+	$(error install can only be run inside a Python virtual environment)
+endif
+	@echo Installing dependencies...
+	pip install -r requirements-dev.txt
+	pip install -e .
+
+lint: phony lint-flake lint-mypy
+
+lint-flake: phony
+	flake8
+
+lint-flake-pre310: phony
+	# Python <3.10 doesn't support pattern matching.
+	flake8 --extend-exclude tests/test_pattern_matching.py
+
+lint-mypy: phony
+	mypy
+
+test: phony
+	pytest

README.md

@@ -419,11 +419,24 @@ Sometimes regular `do()` can handle async values, but this error means
 you have hit a case where it does not. You should use `do_async()` here
 instead.
 
-## Development
-
--   Set up: `pip install -e .`
--   Test your changes: `flake8 src tests; mypy; pytest`
--   Remember to test in Python 3.8 - 3.12.
+## Contributing
+
+These steps should work on any Unix-based system (Linux, macOS, etc) with Python
+and `make` installed. On Windows, you will need to refer to the Python
+documentation (linked below) and reference the `Makefile` for commands to run
+from the non-unix shell you're using on Windows.
+
+1. Setup and activate a virtual environment. See [Python docs][pydocs-venv] for more
+   information about virtual environments and setup.
+2. Run `make install` to install dependencies
+3. Switch to a new git branch and make your changes
+4. Test your changes:
+  - `make test`
+  - `make lint`
+  - You can also start a Python REPL and import `result`
+5. Git commit and create a new PR.
+
+[pydocs-venv]: https://docs.python.org/3/library/venv.html
 
 ## FAQ