Feature
Force colour when the FORCE_COLOR environment variable is set.
Pitch
Mypy automatically adds colour to output for TTYs, or if the env var MYPY_FORCE_COLOR is set.
For example, GitHub Actions is not a tty but it's good to add colour to help read the logs.
FORCE_COLOR is used by many CLI tools and libraries.
It would be good if mypy forced colour output if either FORCE_COLOR or MYPY_FORCE_COLOR is set.
This helps avoid adding lots of separate env vars for each tool/CLI, for example:
env:
FORCE_COLOR: 1 # Request colored output from CLI tools supporting it
MYPY_FORCE_COLOR: 1 # MyPy's color enforcement
PIP_DISABLE_PIP_VERSION_CHECK: 1
PIP_NO_PYTHON_VERSION_WARNING: 1
PIP_NO_WARN_SCRIPT_LOCATION: 1
PY_COLORS: 1 # Recognized by the `py` package, dependency of `pytest`
TOX_PARALLEL_NO_SPINNER: 1
TOX_TESTENV_PASSENV: >-
FORCE_COLOR
MYPY_FORCE_COLOR
NO_COLOR
PY_COLORS
PYTEST_THEME
PYTEST_THEME_MODEFor reference:
Feature
Force colour when the
FORCE_COLORenvironment variable is set.Pitch
Mypy automatically adds colour to output for TTYs, or if the env var
MYPY_FORCE_COLORis set.For example, GitHub Actions is not a tty but it's good to add colour to help read the logs.
FORCE_COLORis used by many CLI tools and libraries.It would be good if mypy forced colour output if either
FORCE_COLORorMYPY_FORCE_COLORis set.This helps avoid adding lots of separate env vars for each tool/CLI, for example:
For reference: