create documentation rendering derivation

.gitignore

@@ -0,0 +1 @@
+/result

support/render-doc.nix

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+{ pkgs ? import <nixpkgs> {} }:
+
+let
+  eval = import (pkgs.path + "/nixos/lib/eval-config.nix") {
+    # baseModules = [];
+    modules = [
+      ./.
+    ];
+  };
+  doc = pkgs.nixosOptionsDoc {
+    options.services.ghidra-server = eval.options.services.ghidra-server;
+  };
+in
+  doc.optionsCommonMark