@beej Released your fix. Hopefully correctly. It built and ran for me, at least. Added Co-Maintainer in case you have further updates.

@aaronp I will do that. I'll just add it to my patch file rather than relying on sed, though.
I don't know if, from a technological standpoint, this is better or worse than relying on gcc-10. I don't play enough to go into the details of if that warning will result in any serious issues. But a basic test didn't seem to produce any issues. Worst case scenario, people can use my previous version.

Until that's fixed you can just remove -Werror instead of depending on gcc-10.

prepare() {
  cd "$srcdir/${pkgname}-$pkgver"
  sed -i 's/set(cxx_warnings "${cxx_warnings} -Werror")//g' CMakeLists.txt
}

EDIT: Ah, I didn't realize the patch also included the paths.

@lea2501 Apologies for delay. 5.7.15 is now released.
Because arch has moved from gcc 10 to gcc 11 the package was no longer building, so I had to troubleshoot that. Thus introduced new dependency gcc10, and a patch to get cmake to actually use that dependency. Because it refused to just take it from the variables.
Enjoy!

Also I created https://github.com/dungeons-of-moria/umoria/issues/44 to represent the issue, though I have no suggestions on fixing it, it might save someone troubleshooting it in the future a few minutes of confusion.

Can confirm that it works perfectly and updated the 5.5 version savegame without any issues. Awesome work!

lea2501: Thanks for the new homepage link.

While it's debatably less secure, I just made the scores file world writable. Comment is available in the PKGBUILD if you wish to opt to a more secure option.

Updated to 5.7.13, hopefully you all enjoy.

This builds and runs fine on aarch64, but I did have to make the scores files writable.