Remove usage of Pipenv, rely on good ol' pip and virtualenv in docs (#2717)

Pipfile

@@ -1,49 +0,0 @@
-[[source]]
-name = "pypi"
-url = "https://pypi.python.org/simple"
-verify_ssl = true
-
-[dev-packages]
-# Testing related requirements.
-coverage = ">= 5.3"
-pytest = " >= 6.1.1"
-pytest-xdist = ">= 2.2.1"
-pytest-cov = ">= 2.11.1"
-tox = "*"
-
-# Linting related requirements.
-pre-commit = ">=2.9.2"
-flake8 = ">=3.9.2"
-flake8-bugbear = "*"
-mypy = ">=0.910"
-types-dataclasses = ">=0.1.3"
-types-typed-ast = ">=1.4.1"
-types-PyYAML = ">=5.4.1"
-
-# Documentation related requirements.
-Sphinx = ">=4.1.2"
-MyST-Parser = ">=0.15.1"
-sphinxcontrib-programoutput = ">=0.17"
-sphinx-copybutton = ">=0.4.0"
-docutils = "==0.17.1"  # not a direct dependency, see https://github.com/pypa/pipenv/issues/3865
-
-# Packaging related requirements.
-setuptools = ">=39.2.0"
-setuptools-scm = "*"
-twine = ">=1.11.0"
-wheel = ">=0.31.1"
-readme_renderer = "*"
-
-black = {editable = true, extras = ["d", "jupyter"], path = "."}
-
-[packages]
-aiohttp = ">=3.7.4"
-platformdirs= ">=2"
-click = ">=8.0.0"
-mypy_extensions = ">=0.4.3"
-pathspec = ">=0.8.1"
-tomli = ">=1.1.0, <3.0.0"
-typed-ast = "==1.4.3"
-typing_extensions = {markers = "python_version < '3.10'", version = ">=3.10.0.0"}
-black = {editable = true,extras = ["d"],path = "."}
-dataclasses = {markers = "python_version < '3.7'", version = ">0.1.3"}

docs/contributing/the_basics.md

@@ -10,20 +10,11 @@ You can use any operating system.
 Install all development dependencies using:
 
 ```console
-$ pipenv install --dev
-$ pipenv shell
-$ pre-commit install
-```
-
-If you haven't used `pipenv` before but are comfortable with virtualenvs, just run
-`pip install pipenv` in the virtualenv you're already using and invoke the command above
-from the cloned _Black_ repo. It will do the correct thing.
-
-Non pipenv install works too:
-
-```console
-$ pip install -r test_requirements.txt
-$ pip install -e .[d]
+$ python3 -m venv .venv
+$ source .venv/bin/activate
+(.venv)$ pip install -r test_requirements.txt
+(.venv)$ pip install -e .[d]
+(.venv)$ pre-commit install
 ```
 
 Before submitting pull requests, run lints and tests with the following commands from
@@ -31,16 +22,16 @@ the root of the black repo:
 
 ```console
 # Linting
-$ pre-commit run -a
+(.venv)$ pre-commit run -a
 
 # Unit tests
-$ tox -e py
+(.venv)$ tox -e py
 
 # Optional Fuzz testing
-$ tox -e fuzz
+(.venv)$ tox -e fuzz
 
 # Optional CI run to test your changes on many popular python projects
-$ black-primer [-k -w /tmp/black_test_repos]
+(.venv)$ black-primer [-k -w /tmp/black_test_repos]
 ```
 
 ### News / Changelog Requirement
@@ -70,9 +61,9 @@ formatting don't need to be mentioned separately though.
 If you make changes to docs, you can test they still build locally too.
 
 ```console
-$ pip install -r docs/requirements.txt
-$ pip install [-e] .[d]
-$ sphinx-build -a -b html -W docs/ docs/_build/
+(.venv)$ pip install -r docs/requirements.txt
+(.venv)$ pip install [-e] .[d]
+(.venv)$ sphinx-build -a -b html -W docs/ docs/_build/
 ```
 
 ## black-primer