Unable to build Xcode projects using SwiftPM in MacPorts sandbox

[Ryan Schmidt]

On Mar 23, 2024, at 23:00, Zero King wrote:
> 
> I think it could be base's sandbox that prevented writes to the home directory, where SwiftPM stores its cache.

If disabling sandboxing in macports.conf makes it work, then your suspicion is probably correct. 

MacPorts sets the HOME environment variable to point to a directory within workpath. It looks like it's ignoring that and trying to write to a subdirectory of the macports user's real home directory, /opt/local/var/macports/home. That would be a bug to file with Apple. It has been a long-standing problem that has affected MacPorts in other ways before.