add nixd instead of nil-ls

config/nvim/lua/core/plugin_config/lsp_config.lua

@@ -30,7 +30,7 @@ local capabilities = require("cmp_nvim_lsp").default_capabilities()
 mason_null_ls.setup()
 
 -- funny lsp config stuff
-require('lspconfig').nil_ls.setup({
+require('lspconfig').nixd.setup({
   on_attach = on_attach,
   capabilities = capabilities,
 })

hosts/sakotop/configuration.nix

@@ -57,6 +57,7 @@
       editors = {
         nvim.enable = true;
         vscode.enable = true;
+        nixd.enable = true;
       };
       cc.enable = true;
       javascript.enable = true;

modules/dev/default.nix

@@ -6,5 +6,6 @@
     ./python.nix
     ./rust.nix
     ./unityhub.nix
+    ./nixd.nix
   ];
 }

modules/dev/nixd.nix

@@ -0,0 +1,19 @@
+# nixd nix lsp using nix and nixpkgs
+# where has this been my whole life
+{ outputs, options, config, lib, pkgs, ...}:
+with lib;
+let
+  cfg = config.modules.dev.nixd;
+in
+{
+  options.modules.dev.nixd = {
+    enable = mkEnableOption false;
+  };
+
+  config = mkIf cfg.enable {
+    environment.systemPackages = with pkgs; [
+      nixd
+      nixpkgs-fmt
+    ];
+  };
+}