nix: Make nix the root

Which means now I'll have to think about real prefixes in commit names.

options.nix

@@ -0,0 +1,32 @@
+{ lib, config, ... }:
+{
+  options.frogeye = {
+    extra = lib.mkEnableOption "Big software";
+    desktop = {
+      xorg = lib.mkEnableOption "Enable X11 support";
+      nixGLIntel = lib.mkEnableOption "Enable nixGLIntel/nixVulkanIntel for windows manager";
+    };
+    dev = {
+      ansible = lib.mkEnableOption "Ansible dev stuff";
+      c = lib.mkEnableOption "C/C++ dev stuff";
+      docker = lib.mkEnableOption "Docker dev stuff";
+      fpga = lib.mkEnableOption "FPGA dev stuff";
+      python = lib.mkEnableOption "Python dev stuff";
+    };
+    dotfiles = {
+      path = lib.mkOption {
+        type = lib.types.str;
+        default = "${config.home.homeDirectory}/.config/dotfiles";
+      };
+    };
+  };
+
+  config = {
+    frogeye = {
+      dev = {
+        ansible = lib.mkDefault true;
+        python = lib.mkDefault true;
+      };
+    };
+  };
+}