fix(nixd): properly configure 'nixd' nvim lsp

dots/.config/nvim/after/plugin/lspconfig.lua

@@ -61,7 +61,30 @@ local servers = {
       Lua = {},
     },
   },
-  nixd = {},
+  nixd = {
+    settings = {
+      nixd = {
+        nixpkgs = {
+          expr = "import <nixpkgs> { }",
+          expr = 'import (builtins.getFlake ("git+file://" + toString ../../../../../.)).inputs.nixpkgs { }',
+        },
+      },
+      options = {
+        nixos = {
+          expr = '(builtins.getFlake ("git+file://" + toString ../../../../../.)).nixosConfigurations."'
+            .. vim.fn.hostname()
+            .. '".options',
+        },
+        home_manager = {
+          expr = '(builtins.getFlake ("git+file://" + toString ../../../../../.)).homeConfigurations."'
+            .. vim.fn.expand("$USER")
+            .. "@"
+            .. vim.fn.hostname()
+            .. '".options',
+        },
+      },
+    },
+  },
   pyright = {},
   -- tsserver = {},
   svelte = {

dots/.config/nvim/flake.lock

@@ -73,11 +73,11 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1768875095,
-        "narHash": "sha256-dYP3DjiL7oIiiq3H65tGIXXIT1Waiadmv93JS0sS+8A=",
+        "lastModified": 1769421245,
+        "narHash": "sha256-m5QLKjpdhbDrhyrUbEm5Haq3lqE5Z6xh2tab5vTHUTo=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "ed142ab1b3a092c4d149245d0c4126a5d7ea00b0",
+        "rev": "5b265bda51b42a2a85af0a543c3e57b778b01b7d",
         "type": "github"
       },
       "original": {