Clang in Bluefin

Hey. Sorry if this is the wrong forum. I have just updated my bluefin installation, and now i am unable to install clang (or gcc-c++ for that matter). I have run
rpm-ostree reset
and have reset my yum sources. i get this error:
 Problem: conflicting requests
  - package clang-21.1.4-1.fc43.x86_64 from updates-archive requires gcc-c++, but none of the providers can be installed
...
  - cannot install both gcc-15.2.1-2.fc43.x86_64 from fedora and gcc-15.2.1-3.fc43.x86_64 from @System

Is @System something that ublue installs?
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