neovim/plugins/lsp/default.nix

{ lib
, plugins
, nvim-lspconfig
, nlsp-settings-nvim
, lspsaga-nvim
, luasnip
, nvim-cmp
, cmp-nvim-lsp
, cmp-luasnip
, ...
}:

let
  inherit (builtins) readFile;
  lsp = [ nvim-lspconfig nlsp-settings-nvim lspsaga-nvim ];
  snippets = [ luasnip ];
  completions = [
    nvim-cmp # Autocompletion
    cmp-nvim-lsp # LSP source for nvim-cmp
    cmp-luasnip # Snippets source for nvim-cmp
  ];

  lspConfigServers = lib.toLua (lib.attrByPath [ "lspConfig" "servers" ] [ ] plugins);
  lspSagaSettings = lib.toLua (lib.attrByPath [ "lspSaga" "settings" ] { } plugins);
in
{
  luaConfig = (readFile (lib.substituteAll { src = ./lspconfig.lua; inherit lspConfigServers lspSagaSettings; }))
    + (readFile ./nvim-cmp.lua);

  plugins = lsp
    ++ snippets
    ++ completions;
}