Server-generated PortIndex contains superfluous compiler dependencies

[mohd-akram (Mohamed Akram)]

The server-generated PortIndex for macOS 15 contains eg. clang-19 as a build dependency for many ports, even though it is not needed. This makes it difficult to see what the actual dependencies are, eg. when doing a port rdeps --index.

[ryandesign (Ryan Carsten Schmidt)]

This was already reported in another ticket a couple days ago. If you can figure out what needs to be changed where to stop it from happening let us know.

[ryandesign (Ryan Carsten Schmidt)]

This is either a portindex (base) bug or an mprsyncup bug.

[ryandesign (Ryan Carsten Schmidt)]

Or a bug in the compiler selection logic which lives both in base and in the ports tree.

[jmroot (Joshua Root)]

This can never be correct in all cases. Compiler selection often depends on the compiler versions present on the system, and that can easily be different between the system generating the PortIndex and the system using it.

[ryandesign (Ryan Carsten Schmidt)]

An alternative to generating the indexes on the buildmaster and faking the OS version and arch would be to do it on each buildworker. The problem with that would be that we wouldn't have portindexes until we set up a buildworker for that OS and arch.

[ryandesign (Ryan Carsten Schmidt)]

Replying to jmroot:

Compiler selection often depends on the compiler versions present on the system,

We could try to have mprsyncup provide faked compiler version info.

[jmroot (Joshua Root)]

Sure, we can make it something plausible for the platform, but it still might be "wrong" compared to the result of parsing the Portfile.

[jmroot (Joshua Root)]

In d5ecda98d56985aa9c257a902ad13ffc5c592da8/macports-base (master):

Allow portindex -p to override arbitrary variables

Files containing overrides for each supported platform will be added to
an appropriate repo for the use of the portindex job.

Closes: #71755
Closes: ​https://github.com/macports/macports-base/pull/361

[mohd-akram (Mohamed Akram)]

Have the servers been updated to use the platform files? Because I'm still seeing Clang build dependencies when doing port rdeps --index.

[ryandesign (Ryan Carsten Schmidt)]

No. I assumed that would just happen when we switch to the new buildmaster.

[jmroot (Joshua Root)]

Right. The GitHub Actions job that generates the indices that are uploaded to Carola is using the override files, but Carola is not yet being used for the rsync origin.