port: non-root local port build hardcodes rsync path

[lukaso (Lukas Oberhuber)]

The locally built port command fails because it is looking for rsync in a standard port install location.

$ ~/macports-gimp3-arm64/bin/port -v selfupdate                                                                    (master *$%=)
--->  Updating MacPorts base sources using rsync
sh: /opt/local/bin/rsync: No such file or directory
Command failed: /opt/local/bin/rsync -rtzvl --delete-after --include=/base.tar --include=/base.tar.rmd160 --exclude=* rsync://rsync.macports.org/macports/release/tarballs/ /Users/lukasoberhuber/macports-gimp3-arm64/var/macports/sources/rsync.macports.org/macports/release/tarballs
Exit code: 127
Error: Error synchronizing MacPorts sources: command execution failed
Error: Follow https://guide.macports.org/#project.tickets if you believe there is a bug.
Error: /Users/lukasoberhuber/macports-gimp3-arm64/bin/port: port selfupdate failed: Error synchronizing MacPorts sources: command execution failed

[lukaso (Lukas Oberhuber)]

Apparently related are #69056 and #69057 where they are looking for /opt/local/bin/ginstall

These problems started when I deleted my global port installation because it was conflicting with another program (can't remember the exact conflict now).

I was expecting my local built base install to work without it as they shouldn't be connected.

[jmroot (Joshua Root)]

All builds hardcode the rsync path as found at configure time, along with lots of other commands. If you don't want to use the one in /opt/local, use --with-rsync=/path/to/the/right/rsync or (easier) configure without /opt/local/bin in the PATH.