fix(provider): leave provider specifications to user

[misumisumi]

#886

[CharlesChiuGit]

the pr should done it's job (i just eyeballed it, not really applying the pr), but i wonder if their's a better approach to it.

[Jint-lzxy]

but i wonder if their's a better approach to it

The workaround that crossed my mind is to allow users to define their custom Python provider(s) (which may include command-line options). But I'm not sure if this is feasible cause I rarely use Python-related stuffs

[misumisumi]

At least in NxOS, it is difficult to know the exact configuration of the latest neovim from outside of nix, since the product is managed as a hash.

[fecet]

I use python everyday but I use conda to manage envs so just respect which python works fine for me.

Another approach is to respect the settings in poetry (or similar thing) like https://github.com/vsedov/nvim/blob/master/lua/modules/lsp/lsp/providers/python/pylance.lua

[misumisumi]

The focus of the issue I was thinking about was about NixOS.
I did not consider other python environments such as poetry.
Therefore, I would like to raise the PullReqesut again, not on the issue of changing python_host_prog, but on the issue of NixOS support.
The title of the issue will be changed.
Concerns, etc. #886

[Jint-lzxy]

So to summarize, is it feasible to directly use the exec python provided by vim.fn.exepath?

[misumisumi]

So to summarize, is it feasible to directly use the exec python provided by vim.fn.exepath?

It can be used if it contains the necessary libraries for python such as global or conda or venv.
If not, NixOS requires python(3)_host_prog to be set correctly.
Because the python provided by vim.fn.exepath is user-wide python and does not contain the libraries neovim uses.
The environment containing the necessary libraries for neovim is provided by the command nvim-python3.

[Jint-lzxy]

IMO in this case we can just leave it alone, cause if this option is nil Neovim would use the fallback (i.e., the one on $PATH) if it exists.

[Jint-lzxy]

fb17e95

[CharlesChiuGit]

LGTM