[PATCH] run-tests: try to provide a test.env file RFC

[timeless]

Pierre-Yves David wrote:
> The idea seems interresting.

>> --
>> The Windows side isn't tested.
>> Long term, it'd be helpful if this included code or instructions
>> to empty the environment too...

> Can we get some documentation and basic testing for this?
> I would like to make sure it does not silently broke and that people are
> able to find it.
>
> We also probably want a .hgignore rules for it.

The file is generated into the test generated directory, so no
hgignore is needed.

But yes, I can work on some basic testing for this. I'll resend after
3.7 w/ a slightly more detailed version -- possibly also testing on
Windows...