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Paths referenced by plugins.luasnip.from{Lua,Snipmate,Vscode}.*.paths are removed by `nix store gc`
Discussed in https://github.com/nix-community/nixvim/discussions/2162
Originally posted by cezdro September 4, 2024
I configured the snippet path using the relative path like in the example. However, at one point the snippets stopped working and I figured that it happened because Nix thought the directory was only needed at a build time and could now be GC'd (I have nix.gc.automatic enabled). Here is the snippet from the generated init.lua:
require("luasnip.loaders.from_lua").lazy_load({
["paths"] = "/nix/store/1wm0qsxvri2pdxd67sxa569inz4pl385-f5jcwka5bpj542475ib1kgfplgnb9x8n-source/modules/home/nvim/plugins/luasnip",
})
require("luasnip.loaders.from_snipmate").lazy_load({
["paths"] = "/nix/store/1wm0qsxvri2pdxd67sxa569inz4pl385-f5jcwka5bpj542475ib1kgfplgnb9x8n-source/modules/home/nvim/plugins/luasnip",
})
require("luasnip.loaders.from_vscode").lazy_load({
["paths"] = "/nix/store/1wm0qsxvri2pdxd67sxa569inz4pl385-f5jcwka5bpj542475ib1kgfplgnb9x8n-source/modules/home/nvim/plugins/luasnip",
})
I don't know how Nix decides whether the referenced path should be kept or not. ~I think that if I used mkDerivation the directory wouldn't be treated as a garbage, but I don't think that such thing should be necessary in Nixvim config.~
~I wrote this in Discussions, because I don't know if this is my fault and if it can be improved in Nixvim.~
When I created a derivation like this, it wasn't removed on nix store gc:
{ pkgs, ... }: let
snippets = pkgs.stdenv.mkDerivation {
name = "snippets";
src = ./.;
buildCommand = ''
mkdir $out
cp -r $src/*.{json,lua,snippets} $out
'';
};
in {
programs.nixvim = {
plugins.luasnip = {
enable = true;
fromLua = [{paths = "${snippets}";}];
fromSnipmate = [{paths = "${snippets}";}];
fromVscode = [{paths = "${snippets}";}];
};
};
}
I think Nixvim could do something like this automatically
