pinwheel: Add go-mode and hook it up with eglot

hosts/pinwheel/configuration.nix

@@ -25,6 +25,7 @@
       ./modules/syncthing
       ./modules/firefox
       ./modules/calibre
+      ./modules/go
     ];
 
   nix.settings.experimental-features = [ "nix-command" "flakes" ];

hosts/pinwheel/modules/emacs/config.org

@@ -385,3 +385,31 @@ https://github.com/justbur/emacs-which-key
     (setq diff-hl-side 'right)
     (global-diff-hl-mode t))
 #+END_SRC
+
+* LSP
+** Eglot
+#+BEGIN_SRC emacs-lisp
+   (defun alex/eglot-organize-imports () (interactive)
+     (call-interactively 'eglot-code-action-organize-imports))
+
+   (defun alex/eglot-on-save ()
+     (add-hook 'before-save-hook #'eglot-format-buffer -10 t)
+     (add-hook 'before-save-hook #'alex/eglot-organize-imports nil t)
+   )
+
+  (use-package eglot
+    :hook (
+           (eglot-managed-mode . alex/eglot-on-save)
+           (go-mode . eglot-ensure)
+           (nix-mode . eglot-ensure)
+    )
+  )
+#+END_SRC
+** Go
+#+BEGIN_SRC emacs-lisp
+  (use-package go-mode
+    :hook (
+           (go-mode . eglot-ensure)
+    )
+  )
+#+END_SRC

hosts/pinwheel/modules/emacs/default.nix

@@ -17,4 +17,6 @@ in
       pkgs.wl-clipboard
     ];
   };
+
+  environment.systemPackages = [ pkgs.ripgrep ];
 }

hosts/pinwheel/modules/go/default.nix

@@ -0,0 +1,8 @@
+{ home-manager, pkgs, ... }:
+{
+  home-manager.users.alex = {
+    home.packages = [ pkgs.gopls ];
+  };
+
+  environment.systemPackages = [ pkgs.go ];
+}