These are the packages that would be merged, in order:

Calculating dependencies ...

!!! Problem resolving dependencies for =www-apps/roundup-2.3.0
 done!
Dependency resolution took 0.83 s (backtrack: 0/20).


!!! The ebuild selected to satisfy "=www-apps/roundup-2.3.0" has unmet requirements.
- www-apps/roundup-2.3.0::gentoo USE="sqlite ssl tz -jinja -markdown -mysql -postgres -pyjwt -test -whoosh -xapian" PYTHON_TARGETS="-python3_12"

  The following REQUIRED_USE flag constraints are unsatisfied:
    python_targets_python3_12

  The above constraints are a subset of the following complete expression:
    any-of ( python_targets_python3_12 )