Plenty of cenbuild packages place files in /usr/share/aclocal and /usr/share/pkgconfig folders. These folders are currently owned by cendio-build-automake and cendio-build-pkg-config. Technically, this means that every single cenbuild package that would want to place files in those folders would have to "Require" both automake and pkg-config. They are too many to be feasible, it is likely that these two folders are more suitable for a base package like cendio-build-filesystem.
One thing fixed in this big cleanup: https://git.cendio.se/thinlinc/cenbuild/-/merge_requests/32
This got resolved in bug 8567: https://git.cendio.se/thinlinc/cenbuild/-/commit/5c68fa0e https://git.cendio.se/thinlinc/cenbuild/-/commit/894dbd59
Tested this as part of bug 8567, comment #25. After uninstalling cendio-build-everything, /usr/share/aclocal and /usr/share/pkgconfig are cleaned up correctly.
