Add eglot-format to before-save-hook

flake.nix

@@ -36,13 +36,14 @@
           runtimeInputs = [ pkgs.xorg.xorgserver ];
 
           text = ''
-          ${pkgs.xorg.xorgserver.out}/bin/Xephyr -br -ac -noreset -screen 800x600 :1
+            ${pkgs.xorg.xorgserver.out}/bin/Xephyr -br -ac -noreset -screen 800x600 :1
           '';
         };
         noether = inputs.noether.outputs.packages.${system}.default;
         factory = params: pkgs.callPackage ./nix/factory.nix ({ inherit noether; } // params);
-        default = (factory {});
-      in {
+        default = (factory { });
+      in
+      {
         packages = {
           default = default.fg42;
         } // (pkgs.lib.optionalAttrs (system == "x86_64-linux") {

lisp/fg42/editor.el

@@ -26,6 +26,7 @@
   ;; Language support
   (require 'fg42/autocomplete)
   (require 'fg42/langs/langs)
+  (require 'fg42/eglot)
   (require 'fg42/langs/cpp)
   (require 'fg42/langs/verilog)
   (require 'fg42/langs/python)
@@ -197,12 +198,6 @@ contextual information."
     "Yasnippet's snippets."
     :after yasnippet)
 
-  ;; Language Servers and friends
-  (use! eglot
-    "Eglot is a minimalistic yet powerful LSP replacement
-shipped with Emacs."
-    :commands eglot
-    :autoload eglot-ensure)
 
   (use! flycheck
     "Flycheck is a modern on-the-fly syntax checking extension for GNU Emacs."

lisp/fg42/eglot.el

@@ -0,0 +1,39 @@
+;;; FG42 --- The mighty editor for the emacsians -*- lexical-binding: t; -*-
+;;
+;; Copyright (c) 2010-2024 Sameer Rahmani & Contributors
+;;
+;; Author: Sameer Rahmani <lxsameer@gnu.org>
+;; URL: https://devheroes.codes/FG42/FG42
+;; Version: 4.0.0
+;;
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;;
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+;;
+;; You should have received a copy of the GNU General Public License
+;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
+;;
+;;; Commentary:
+;;; Code:
+(eval-when-compile
+  (require 'fpkg))
+
+
+;; Language Servers and friends
+(use! eglot
+  "Eglot is a minimalistic yet powerful LSP replacement
+shipped with Emacs."
+  :hook
+  (prog-mode . eglot-ensure)
+  (prog-mode . (lambda ()
+                 (add-hook 'before-save-hook 'eglot-format nil t))))
+
+
+(provide 'fg42/eglot)
+;;; eglot.el ends here

lisp/fg42/langs/nix.el

@@ -24,13 +24,26 @@
 (eval-when-compile
   (require 'fpkg))
 
+
+
 (use! nix-mode
   "Nix language support for Emacs."
   :mode "\\.nix\\'"
+
   :hook
   (nix-mode . eglot-ensure)
   (nix-mode . company-mode)
-  (nix-mode . flyspell-prog-mode))
+  (nix-mode . flyspell-prog-mode)
+
+  :init
+  :config
+  (with-eval-after-load 'eglot
+    ;; Force nil to use nixpkgs-fmt for formatting
+    (let ((nil-lsp '(nix-mode . ("nil"
+                                 :initializationOptions
+                                 (:formatting (:command ["nixpkgs-fmt"]))))))
+      (add-to-list 'eglot-server-programs nil-lsp))))
+
 
 (provide 'fg42/langs/nix)
 ;;; nix.el ends here

nix/fg42.nix

@@ -14,8 +14,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 { lib, stdenv, elispPkgs, srcDir, emacsPackagesFor, ourPackages, direnv
-, makeFontsConf, nix
-
+, makeFontsConf, nix, nixpkgs-fmt
 , nil, # nix lsp server
 
   # python deps
@@ -44,7 +43,7 @@ let
   dicts = aspellWithDicts (dicts: with dicts; [ en en-computers en-science ]);
 
   runtimeBins = [
-    ripgrep git tree-sitter direnv nix nil dicts fd
+    ripgrep git tree-sitter direnv nix nil dicts fd nixpkgs-fmt
   ]
   ++ (lib.optional (!stdenv.buildPlatform.isRiscV) [
     # Not supported on Risc-V