to trigger/signal a rebuild for the transition 5.10.1 -> 5.12.1.
The list of packages is computed by finding all packages which end
up having either of PERL5_USE_PACKLIST, BUILDLINK_API_DEPENDS.perl,
or PERL5_PACKLIST defined in their make setup (tested via
"make show-vars VARNAMES=..."), minus the packages updated after
the perl package update.
sno@ was right after all, obache@ kindly asked and he@ led the
way. Thanks!
File::pushd does a temporary chdir that is easily and automatically reverted,
similar to pushd in some Unix command shells. It works by creating an object
that caches the original working directory. When the object is destroyed, the
destructor calls chdir to revert to the original working directory. By storing
the object in a lexical variable with a limited scope, this happens
automatically at the end of the scope.
