CLT needs reinstalling on 10.15 buildbot

[Chris Jones]

On 27/01/2020 8:10 am, Ryan Schmidt wrote:
> 
> 
> On Jan 26, 2020, at 09:37, Christopher Jones wrote:
> 
>> I am seeing this warning in a number of builds on the 10.15 build bot
>> Warning: cltversion: The Command Line Tools are installed, but MacPorts cannot determine the version.
>> Warning: cltversion: For a possible fix, please see:
>> https://trac.macports.org/wiki/ProblemHotlist#reinstall-clt
>> Could someone take a look and follow the instructions to make sure the CLT is properly installed ?
> 
> I don't see why the CLT would have become uninstalled on a buildbot worker... Recent builds seem to be working fine... If you are seeing builds that are not working, can you share those build URLs?

As the message above says, its not un-installed. A recent Xcode update 
has removed the CLT installation receipts, so the Apple update system is 
no longer aware it is still installed, and the MacPorts checks as 
performed by the xcode_workarounds/cltversion PGs for the CLT versions 
are unable to determine the version installed.

The instructions at

https://trac.macports.org/wiki/ProblemHotlist#reinstall-clt

give the work-arounds needed to fix this and restore the receipts.

This is, I believe, a bug in the 10.15 Xcode versions. I have seen this 
happen on every update I have made on my local machine.

The above warning appears in the gcc8 build, for instance

https://build.macports.org/builders/ports-10.15_x86_64-builder/builds/22242/steps/install-port/logs/stdio

The build was successfully in the end, but only because the 
xcode_workaround detects the partly broken CLT and ignores it. It would 
be better to properly fix the installation to make sure the CLT version 
matches the Xcode installation (which currently the PGs cannot do).

cheers Chris