80 (karlthered(a)gmail.com) said:
libgtksourceviewmm can be safely (?) dropped since it is no more
actively maintained and all packages i'm aware of that relied on it
moved to newer gtksourceviewmm{,3} packages (repoquery didn't find any
other packages relying on it)
If you want to get this accomplished before it happens automatically,
please follow the procedure at:
https://fedoraproject.org/wiki/How_to_remove_a_package_at_end_of_life
Bill