poetry shell modifies $TERM env variable within tmux

[owittek]

• Poetry version: Poetry (version 1.4.2)
• Python version: 3.11.3
• OS version and name: macOS 13.3.1

• I am on the latest stable Poetry version, installed using a recommended method.
• I have searched the issues of this repo and believe that this is not a duplicate.
• I have consulted the FAQ and blog for any relevant entries or release notes.
• If an exception occurs when executing a command, I executed it again in debug mode (-vvv option) and have included the output below.

Issue

Hey, I'm an avid tmux user and love poetry so far, thanks for your work!

The issue I am experiencing is that when I run poetry shell my $TERM env variable is being changed from screen-256color to tmux-256color which breaks my terminal colors. Manually setting it back to screen-256color works fine. I'm running zsh 5.9 as my shell of choice.

EDIT:

I can see that emulate bash -c '. .../.venv/bin/activate' is being run in my shell when I run poetry shell. The command should be POSIX-compatible so I don't see a reason for it to be emulated. Maybe that causes some kind of issues but that's just speculation on my part.

[dimbleby]

Not a zsh user and no idea what the implications of emulate are, but you can read all about its introduction at #5795

I avoid poetry shell altogether, just activate the virtual environment yourself as though poetry shell did not exist

[owittek]

Not a zsh user and no idea what the implications of emulate are, but you can read all about its introduction at #5795

I avoid poetry shell altogether, just activate the virtual environment yourself as though poetry shell did not exist

Yeah I do the same thing to prevent this issue but I still wanted to report this so it can be fixed eventually if it's not just an issue on my side.

[dimbleby]

if you know how to fix it, submit a merge request!

(personally I'd like to see poetry shell removed altogether, anyway I wouldn't expect that waiting for someone else to fix such things is likely to be a successful strategy)

[owittek]

I've actually skimmed the code for poetry shell but I didn't look for where the emulate command is being invoked. I'll try to confirm my suspicion later on & if it's true I'll also look more in-depth into the source code.