tox and pytest look at PY_COLORS:

https://github.com/tox-dev/tox/blob/9cc692d85c9ce84344ea7fee4b127755c6099a32/src/tox/session/commands/help.py
https://docs.pytest.org/en/6.2.x/reference.html#envvar-PY_COLORS

On Tue, 18 Jan 2022 at 21:17, Ethan Furman <ethan@stoneleaf.us> wrote:
On 1/18/22 11:59 AM, Pablo Galindo Salgado wrote:

 > We considered using colours and other markers such as bold text, but that opens a considerable can of worms with
 > detecting in all systems and configurations if that can be done. I have been told that some of these situations are
 > quite tricky and is not as easy as checking for tty support.

Maybe use an environment variable?

--
~Ethan~
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