[Bug 277411] ports-mgmt/pkg: @postunexec command in pkg-plist isn't executed when package is upgraded with `pkg upgrade`

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=277411

Yasuhiro Kimura <yasu@freebsd.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|New                         |Open

--- Comment #2 from Yasuhiro Kimura <yasu@freebsd.org> ---
(In reply to Baptiste Daroussin from comment #1)

Thanks for quick reply.

I found the problem(?) while testing attached patch of bug #276990. Currently
security/gnupg/pkg-plist includes following lines.

----------------------------------------------------------------------
@postexec [ -e %D/man/man1/gpg.1.gz ] || ln -sf gpg2.1.gz %D/man/man1/gpg.1.gz
@postunexec [ -e %D/man/man1/gpg.1.gz ] || rm -f %D/man/man1/gpg.1.gz
----------------------------------------------------------------------

The intention of them is to make manpage of gpg2(1) also accessible as gpg(1)
when security/gpg1 isn't installed. And when manpages of the port were move to
share/man these lines shold also have been adjusted. But they didn't and, as a
result, ${PREFIX}/man/man1/gpg.1.gz is stale symlink now.

So the patch of bug #276990 changes above lines as following.

----------------------------------------------------------------------
@postexec [ -e %D/share/man/man1/gpg.1.gz ] || ln -sf gpg2.1.gz
%D/share/man/man1/gpg.1.gz
@postunexec [ -e %D/share/man/man1/gpg.1.gz ] || rm -f
%D/share/man/man1/gpg.1.gz
----------------------------------------------------------------------

But ${PREFIX}/man/man1/gpg.1.gz isn't removed after the package is upgraded
with `pkg upgrade` because @postunexec command of old version isn't executed.

In bug #276990, comment #3 it is proposed to keep old @postunexec command line.
But it doesn't solve the problem.

So is there any way to remove old ${PREFIX}/man/man1/gpg.1.gz with `pkg
upgrade`?

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