I was thinking about this a day or 2 ago and just noticed that a similar
situation has come up.

Please refer to https://bugs.gentoo.org/show_bug.cgi?id=239006 but
basically.

=dev-java/ant-antlr-1.7.1 was changed from EAPI="1" to EAPI="2" to take
advantage of the use flag dep functionality.

now, I normally take the approach that if the change I am making to an
ebuild effects the installed files then I bump.

But what is the "best" thing to do here.

Some things to note is that this ebuild is ~arch and EAPI="2" is also
~arch.  Obviously if the ebuild was arch then changing to a ~arch EAPI
would be a no-no.  Are there any other situations which are definite
no-no's?

Anyway,  would be nice to get some feedback, idea's on this and
hopefully also a more detailed explaination from a pm's perspective (if
there is one).

Thanks.

Alistair

ps. If changing EAPI is bad then maybe repoman should check for it.