git-branchless: improve for cross compiling

In a previous commit d5a849c,
the `postInstall` hook invokes the host binary `git-branchless`, which
would probably fail when cross compiling. In this commit, we simply
disable the hook in these cases.

Also, add myself to meta.maintainers.

Author: bryango

pkgs/applications/version-management/git-branchless/default.nix

@@ -40,7 +40,7 @@ rustPlatform.buildRustPackage rec {
       libiconv
     ];
 
-  postInstall = ''
+  postInstall = lib.optionalString (with stdenv; buildPlatform.canExecute hostPlatform) ''
     $out/bin/git-branchless install-man-pages $out/share/man
   '';
 
@@ -63,6 +63,7 @@ rustPlatform.buildRustPackage rec {
     maintainers = with maintainers; [
       nh2
       hmenke
+      bryango
     ];
   };
 }