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neovim-flake/modules/languages/lua.nix

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{
pkgs,
config,
lib,
...
}: let
inherit (lib) isList nvim mkEnableOption mkOption types mkIf mkMerge optionalString getExe;
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cfg = config.vim.languages.lua;
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in {
options.vim.languages.lua = {
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enable = mkEnableOption "Lua language support";
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treesitter = {
enable = mkEnableOption "Lua Treesitter support" // {default = config.vim.languages.enableTreesitter;};
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package = nvim.types.mkGrammarOption pkgs "lua";
};
lsp = {
enable = mkEnableOption "Lua LSP support via LuaLS" // {default = config.vim.languages.enableLSP;};
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package = mkOption {
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description = "LuaLS package, or the command to run as a list of strings";
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type = with types; either package (listOf str);
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default = pkgs.lua-language-server;
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};
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neodev.enable = mkEnableOption "neodev.nvim integration, useful for neovim plugin developers";
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};
};
config = mkIf cfg.enable (mkMerge [
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(mkIf cfg.treesitter.enable {
vim.treesitter.enable = true;
vim.treesitter.grammars = [cfg.treesitter.package];
})
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(mkIf cfg.lsp.enable {
vim.lsp.lspconfig.enable = true;
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vim.lsp.lspconfig.sources.lua-lsp = ''
lspconfig.lua_ls.setup {
capabilities = capabilities;
on_attach = default_on_attach;
${optionalString cfg.lsp.neodev.enable "before_init = require('neodev.lsp').before_init;"}
cmd = ${
if isList cfg.lsp.package
then nvim.lua.expToLua cfg.lsp.package
else ''{"${getExe cfg.lsp.package}"}''
};
}
'';
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})
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(mkIf cfg.lsp.neodev.enable {
vim.startPlugins = ["neodev-nvim"];
vim.luaConfigRC.neodev = nvim.dag.entryBefore ["lua-lsp"] ''
require("neodev").setup({})
'';
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})
]);
}