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

Calculating dependencies ... done!
Dependency resolution took 0.86 s (backtrack: 1/20).


!!! All ebuilds that could satisfy ">=dev-java/osgi-cmpn-8.0.0-r1:8" have been masked.
!!! One of the following masked packages is required to complete your request:
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(dependency required by "dev-java/jdbc-postgresql-42.7.13::gentoo" [ebuild])
(dependency required by "=dev-java/jdbc-postgresql-42.7.13" [argument])
For more information, see the MASKED PACKAGES section in the emerge
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