gitui @0.18.0_1+universal build failing

[EnricoMonese (-)]

:info:build    Compiling memchr v2.4.1
:info:build      Running `/opt/local/bin/rustc --crate-name build_script_build --edition=2018 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_gitui/gitui/work/.home/.cargo/macports/memchr-2.4.1/build.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debug-assertions=off --cfg 'feature="default"' --cfg 'feature="std"' -C metadata=425a984e010b75c3 -C extra-filename=-425a984e010b75c3 --out-dir /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_gitui/gitui/work/gitui-0.18.0/target/release/build/memchr-425a984e010b75c3 -L dependency=/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_gitui/gitui/work/gitui-0.18.0/target/release/deps --cap-lints allow`
:info:build error: linker `/opt/local/bin/clang-mp-11` not found
:info:build   |
:info:build   = note: No such file or directory (os error 2)

There's this other ticket #63341 with the same issue it seems. There they say the problem is a missing clang-11. I tried manually installing it, that still doesn't work but it throws different errors.
I noticed however that the Rust port does have clang11 in it's dependencies, while this has clang12 and cargo (which also has clang12)

[EnricoMonese (-)]

full build log