Arrow keys no longer work in PDB with tox 4

[tucked]

Add --pdb to a pytest call (with or without {tty:--color=yes}), or insert a pytest.set_trace() or breakpoint() call.
The up arrow cannot be used to access previous commands in tox>=4:

(Pdb) pp value
'{}'
(Pdb) ^[[A

In tox<4 the second prompt would show (Pdb) pp value.

[gaborbernat]

Please submit a PR to fix it. 👍

[masenf]

Possible dupe of #1773

Seems supporting isatty for output streams influences pdb to use readline-ish mode.

[gaborbernat]

Perhaps there's some env-var to overwrite this behavior?

[masenf]

I believe this was fixed by #2711, at least on posix platforms.

Windows still doesn't support pty, and thus will still have this issue (#2337).

@tucked can we close this?