Missing lua dependency of the LuaSnip nvim plugin

[pierrot-lc]

Describe the bug

I installed vimPlugins.luasnip. When running :checkhealth, luasnip says that the dependency jsregexp is not found.

Steps To Reproduce

Steps to reproduce the behavior:

1. Install neovim with the plugin vimPlugins.luasnip
2. Run :checkhealth command

For example, using home-manager:

{
  programs.neovim = {
    enable = true;
    plugins = [ pkgs.vimPlugins.luasnip ];
  };
}

Expected behavior

When installing the plugin, the lua package of the plugin is used instead (see here). That luasnip package should come with jsregexp as described in its nix expression.

Screenshots

Additional context

I noticed that the lua jsregexp package is indeed built by nix, along with the lua luasnip package. So the error may come from the package not being added to the neovim lua runtime path.

The error disappear when adding jsregexp in extraLuaPackages like so:

{
  programs.neovim = {
    enable = true;
    plugins = [ pkgs.vimPlugins.luasnip ];
    extraLuaPackages = ps: [ ps.jsregexp ];
  };
}

I managed to reproduce the error using kickstart-nvim.nix and nixvim as well.

Notify maintainers

@teto @GaetanLepage @mrcjkb

Metadata

[user@system:~]$ nix-shell -p nix-info --run "nix-info -m"
 - system: `"x86_64-linux"`
 - host os: `Linux 6.8.7, NixOS, 24.05 (Uakari), 24.05.20240419.5c24cf2`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.18.2`
 - channels(root): `"nixos"`
 - nixpkgs: `/nix/store/v4pcs3nzx54m5bmxd39win0rgl2d2hbx-source`

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[teto]

Indeed I know about the issue. I have it working locally and I am upstreaming the fixes hopefully before 24.05. I will keep you informed.

[julienTraversier]

With nixvim the workarround doesn't seems to work.

[GaetanLepage]

Should be fixed by #309762

[GaetanLepage]

The PR has been merged. @pierrot-lc feel free to test :)

[pierrot-lc]

The PR has been merged. @pierrot-lc feel free to test :)

Sadly it does not seem to be fixed. The warning is still raised. I think the issue is related to the way luasnip is installed by nix. The dependency jsregexp seems to be used here but it is still not found in the lua environment of nvim. I do not fully understand the way lua packages are built, so maybe there's something that I miss somewhere.

[mrcjkb]

We might need to wait for @teto's fix to get into master and/or unstable.