added comments to explain need help with one section marked TODO

package.nix

@@ -1,6 +1,9 @@
 { buildGoModule, gitMinimal }:
+# This is the wrapping around mkderivation that abstracts away the standard boilerplate logic for building go packages.
 buildGoModule {
+  # The final built binary name.
   pname = "go-hello";
+  # The binary version | NEEDS TO BE IN STEP WITH GO MOD.
   version = "v1.0.0";
   # In 'nix develop', we don't need a copy of the source tree
   # in the Nix store.
@@ -8,8 +11,10 @@ buildGoModule {
     name = "source";
     path = ./.;
   };
-  vendorHash = null;
+
+  # required deps for build time nativeBuildInputs are runtime deps
   buildInputs = [
+    # Just an example input
     gitMinimal
   ];
   # This hash locks the dependencies of this package. It is
@@ -21,5 +26,5 @@ buildGoModule {
   # To begin with it is recommended to set this, but one must
   # remember to bump this hash when your dependencies change.
   # vendorHash = pkgs.lib.fakeHash;
-
+  vendorHash = null;
 }