neovim/plugins/lsp/default.nix

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

let
  tabbymlEnable = lib.attrByPath [ "tabbyml" "enable" ] false plugins;
  tabbymlDefaultSettings = {
    host = "http://127.0.0.1:8080";
    max_lines = 100;
  };
  tabbymlSettings = lib.toLua (lib.attrByPath [ "tabbyml" "settings" ] tabbymlDefaultSettings plugins);
  tabbymlLuaConfig = lib.optionalString tabbymlEnable
    (lib.readSubFile ./cmp-tabby.lua { inherit tabbymlSettings; });

  cmpSources = lib.toLua (
    [
      { name = "nvim_lsp"; }
      { name = "luasnip"; }
      { name = "orgmode"; }
    ]
    ++ lib.optional tabbymlEnable { name = "cmp_tabby"; }
  );
  cmpLuaConfig = lib.readSubFile ./nvim-cmp.lua { inherit cmpSources; };

  lspconfigLuaConfig = lib.readSubFile ./lspconfig.lua
    { inherit lspConfigServers lspSagaSettings; };

  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
  ] ++ lib.optional tabbymlEnable cmp-tabby;

  lspConfigServers = lib.toLua (lib.attrByPath [ "lspConfig" "servers" ] [ ] plugins);
  lspSagaSettings = lib.toLua (lib.attrByPath [ "lspSaga" "settings" ] { } plugins);
in
{
  luaConfig = lspconfigLuaConfig + tabbymlLuaConfig + cmpLuaConfig;

  plugins = lsp
    ++ snippets
    ++ completions;
}