Python Venv and PS1 Update Fails In Emas

[tvraman]

bc.org

[tvraman]

Using separate bash process for completion appears to fix the problem

[szermatt]

Could you give more details about what you're doing and what is going wrong? Why did you write "bc.org"?

Using separate bash process will leave the prompt alone, so definitely, it'll fix any issues with setting PS1, but I'd like to understand and hopefully fix the problem.

[tvraman]

Original issue did state what I was doing, will attach again in case it got lost. I'll also include the "activate" bash script generated by Python it's juggling PS1 so it can restore it when the virtual env is deactivated and I suspect that that is getting confused by what bash-completion is doing. # This file must be used with "source bin/activate" *from bash* # you cannot run it directly deactivate () { # reset old environment variables if [ -n "${_OLD_VIRTUAL_PATH:-}" ] ; then PATH="${_OLD_VIRTUAL_PATH:-}" export PATH unset _OLD_VIRTUAL_PATH fi if [ -n "${_OLD_VIRTUAL_PYTHONHOME:-}" ] ; then PYTHONHOME="${_OLD_VIRTUAL_PYTHONHOME:-}" export PYTHONHOME unset _OLD_VIRTUAL_PYTHONHOME fi # Call hash to forget past commands. Without forgetting # past commands the $PATH changes we made may not be respected hash -r 2> /dev/null if [ -n "${_OLD_VIRTUAL_PS1:-}" ] ; then PS1="${_OLD_VIRTUAL_PS1:-}" export PS1 unset _OLD_VIRTUAL_PS1 fi unset VIRTUAL_ENV unset VIRTUAL_ENV_PROMPT if [ ! "${1:-}" = "nondestructive" ] ; then # Self destruct! unset -f deactivate fi } # unset irrelevant variables deactivate nondestructive VIRTUAL_ENV="/home/raman/.local/share/pipx/venvs" export VIRTUAL_ENV _OLD_VIRTUAL_PATH="$PATH" PATH="$VIRTUAL_ENV/bin:$PATH" export PATH # unset PYTHONHOME if set # this will fail if PYTHONHOME is set to the empty string (which is bad anyway) # could use `if (set -u; : $PYTHONHOME) ;` in bash if [ -n "${PYTHONHOME:-}" ] ; then _OLD_VIRTUAL_PYTHONHOME="${PYTHONHOME:-}" unset PYTHONHOME fi if [ -z "${VIRTUAL_ENV_DISABLE_PROMPT:-}" ] ; then _OLD_VIRTUAL_PS1="${PS1:-}" PS1="(venvs) ${PS1:-}" export PS1 VIRTUAL_ENV_PROMPT="(venvs) " export VIRTUAL_ENV_PROMPT fi # Call hash to forget past commands. Without forgetting # past commands the $PATH changes we made may not be respected hash -r 2> /dev/null

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-- My earlier notes: * Python Venv, Bash-Completions and PS1 1. I use bash-completions in Emacs 30 built from ***@***.*** 2. I use Python 3.10 and run into an issue when activating a Virtual Env 3. If I create the env as python3 -m venv venv, activating it in a shell outside Emacs updates the prompt. 4. However the activate script that python3 sets up does not change the prompt in Bash running under Emacs. 5. I think it is getting confused somehow by the custom PS1 prompt that bash-completions uses 6. I think it's this one: #+begin_src emacs-lisp bash-completion--ps1 "'==emacs==ret=$?==.'" #+end_src