Wrong Python version somehow is used

[dmitry-kabanov]

Hi, I have Vim 9.1 installed via the Linuxbrew package manager in Ubuntu 24.04. It is linked against Python 3.13 which is also installed via Linuxbrew.

I work on a project that uses Conda to have project-specific Python, so that in the project directory my $PATH looks like this:

➜ where python3
$HOME/sw/miniforge3/envs/um02-open-interfaces/bin/python3
/home/linuxbrew/.linuxbrew/bin/python3
/usr/bin/python3
/bin/python3

where the first pytho3n is project-specific, while the second is the one that Vim is linked to.

However, someohow UltiSnips uses the project-specific Python and crashes because of that.
When I start Vim, and do the following command:

py3 import UltiSnips

I get the following error:

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "$HOME/.vim/plugged/ultisnips/pythonx/UltiSnips/__init__.py", line 6, in <module>
    from UltiSnips.snippet_manager import UltiSnips_Manager
  File "$HOME/.vim/plugged/ultisnips/pythonx/UltiSnips/snippet_manager.py", line 14, in <module>
    from UltiSnips import err_to_scratch_buffer
  File "$HOME/.vim/plugged/ultisnips/pythonx/UltiSnips/err_to_scratch_buffer.py", line 8, in <module>

    from bdb import BdbQuit
  File "$HOME/sw/miniforge3/envs/um02-open-interfaces/lib/python3.13/bdb.py", line 7, in <module>
    from inspect import CO_GENERATOR, CO_COROUTINE, CO_ASYNC_GENERATOR
  File "$HOME/sw/miniforge3/envs/um02-open-interfaces/lib/python3.13/inspect.py", line 146, in <modul
e>
    import dis
  File "$HOME/sw/miniforge3/envs/um02-open-interfaces/lib/python3.13/dis.py", line 8, in <module>
    from opcode import *
  File "$HOME/sw/miniforge3/envs/um02-open-interfaces/lib/python3.13/opcode.py", line 12, in <module>

    import _opcode
ImportError: $HOME/sw/miniforge3/envs/um02-open-interfaces/lib/python3.13/lib-dynload/_opcode.cpython
-313-x86_64-linux-gnu.so: undefined symbol: _Py_GetExecutor

If I start vim like this:

PATH=/home/linuxbrew/.linuxbrew/bin:$PATH vim

then it works.

[qadzek]

Setting this variable might be worth a try:

let g:python3_host_prog = '/home/linuxbrew/.linuxbrew/bin/python3'