feat(uv): add uv as a pip alternative for dealing with pypi

[KingMichaelPark]

UV is a very fast installer for python packages
that can be 10-100x faster to resolve packages. This adds
an option for Mason to use it instead of pip to resolve
python packages that are installed via Mason.

More info about the replacement: https://github.com/astral-sh/uv
I have no affiliations with uv/astral, it is just very fast and
it would be nice to have updates for packages like sqlfluff take
a lot less time than they currently do to resolve during updates.

[iguanacucumber]

I think we should do this for bun too, since now it's compatible with alot more things now

[PyDataBlog]

Can we get some traction for this? it would boost pkg installation speeds astronomically.

[iguanacucumber]

i tried installing about 10 python based tools with this PR:

• with pip -> 2 minutes
• with uv -> 15 seconds

[iguanacucumber]

i'm having some issues on another computer:

[KingMichaelPark]

@iguanacucumber if you could retry it seems to be resolved on my side now

[iguanacucumber]

every other package installs file excepts debugpy

[KingMichaelPark]

I won't have time to work on this for a few days so you're more than welcome to open a PR on my branch if you desperately need it. (You should be able to just add debugpy to your dev dependencies in your project as a workaround in the short term)

[KingMichaelPark]

Alright, debugpy installs now, to have this work with mason-lspconfig I had to fork that for now:

return {
    "neovim/nvim-lspconfig",
    dependencies = {
        { "KingMichaelPark/mason.nvim", opts = { pip = { use_uv = true } } },
        "KingMichaelPark/mason-lspconfig.nvim",
        "hrsh7th/cmp-nvim-lsp",
        "nvim-telescope/telescope.nvim"
    },

[lljbash]

This PR is really helpful! I was wondering if the maintainer has any plans to merge it? @williamboman

[dusktreader]

Not only would this boost install speeds dramatically for lsps that are installed via pip, it would also eliminate the need for pip itself and consequently for python3-venv.

Further, the packages could require different versions of python since uv can install python binaries as well. I believe this happens automatically.

[user520881]

is there plans to merge this?

[Xylot]

@williamboman Are there plans to merge this?

For anyone that needs a quick workaround, I noticed that Mason appends itself to the top of the path at nvim startup:

:echo $PATH
>>> ~/.local/share/nvim/mason/bin:...

So I just symlinked my system python to that directory in order to force Mason to recognize it first.

ln -s /usr/bin/python3 ~/.local/share/nvim/mason/bin/python3

[LogPRose]

Any updates on merging?

[effigies]

It looks like this PR is falling afoul of contributing guidelines:

Adding or changing a feature

Adding or changing a feature MUST be preceded with an issue where scope and acceptance criteria are agreed upon with project maintainers before implementation.

Probably makes sense to open an issue and discuss, rather than keep pinging here.

[KingMichaelPark]

#1972

[Conarius]

Quick question:
Does this also appear in checkhealth? Cuz imo it should but marked as optional

[KingMichaelPark]

Quick question: Does this also appear in checkhealth? Cuz imo it should but marked as optional

Now it does.

[KingMichaelPark]

@williamboman @seblyng @mirekdlugosz This also fixes the 404 in your CI for shellharden.