Error configuring MPV

[rex4539 (Dimitris Apostolou)]

% sudo port upgrade mpv
--->  Computing dependencies for mpv
--->  Fetching archive for mpv
--->  Attempting to fetch mpv-0.33.0_2+audiocd+bluray+dvd+libarchive+network+opengl+osd+python38+uchardet.darwin_20.x86_64.tbz2 from https://cph.dk.packages.macports.org/mpv
--->  Attempting to fetch mpv-0.33.0_2+audiocd+bluray+dvd+libarchive+network+opengl+osd+python38+uchardet.darwin_20.x86_64.tbz2 from https://packages.macports.org/mpv
--->  Attempting to fetch mpv-0.33.0_2+audiocd+bluray+dvd+libarchive+network+opengl+osd+python38+uchardet.darwin_20.x86_64.tbz2 from https://lil.fr.packages.macports.org/mpv
--->  Fetching distfiles for mpv
--->  Verifying checksums for mpv
--->  Extracting mpv
--->  Configuring mpv
Warning: reinplace s/@@BACKEND@@/cocoa/ didn't change anything in /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_multimedia_mpv/mpv/work/mpv-0.33.0/TOOLS/config-maintainer
Error: Failed to configure mpv: configure failure: command execution failed
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_multimedia_mpv/mpv/main.log for details.
Error: Follow https://guide.macports.org/#project.tickets to report a bug.

[i0ntempest]

I think this is related to the git version of the macports you're using. They changed how Xcode/SDK version number is handled and shown to the build system. Try installing the latest release version and reopen if the problem persists.