Replace nil_ls with nixd

config/neovim/lua/opdavies/lsp/init.lua

@@ -48,7 +48,21 @@ local servers = {
   },
 
   marksman = true,
-  nil_ls = true,
+
+  nixd = {
+    command = { "nixd" },
+    settings = {
+      nixd = {
+        nixpkgs = {
+          expr = "import <nixpkgs> { }",
+        },
+
+        formatting = {
+          command = "nix fmt",
+        },
+      },
+    },
+  },
 
   tailwindcss = {
     filetypes = { "html", "javascript", "twig", "typescript", "vue" },

lib/nixos/configuration.nix

@@ -17,6 +17,8 @@ in
     permittedInsecurePackages = [ "electron-27.3.11" ];
   };
 
+  nix.nixPath = [ "nixpkgs=${inputs.nixpkgs}" ];
+
   # Bootloader.
   boot = {
     loader = {

lib/shared/modules/neovim.nix

@@ -281,7 +281,7 @@ in
       lua-language-server
       lua54Packages.luacheck
       marksman
-      nil
+      nixd
       nodePackages."@tailwindcss/language-server"
       nodePackages.bash-language-server
       nodePackages.dockerfile-language-server-nodejs