It seems the nightlies from the Ubuntu ppa do not build anymore since ca. 3 weeks.
This one was the last I have seen which built correctly:
https://launchpadlibrarian.net/792691097/buildlog_ubuntu-noble-amd64.kicad_202505111451+5e6ef67fce~182~ubuntu24.04.1_BUILDING.txt.gz
This is the last one which does not build:
https://launchpad.net/~kicad/+archive/ubuntu/kicad-dev-nightly/+build/30897918/+files/buildlog_ubuntu-noble-amd64.kicad_202506011454+2124f2b846~182~ubuntu24.04.1_BUILDING.txt.gz
I tried to compare the outputs but I could not find the root of the problem.
Is this a known issue? Should this be reported somewhere?