| Subject: | should not install to INSTALLDIRS => perl after 5.11.0 |
https://metacpan.org/source/BINGOS/Archive-Tar-1.93_02/Makefile.PL#L72
This is probably not a problem yet, but will be if Archive::Tar ever pulls dependencies that are not installed to ->sitelib on an older perl.
ie: say for instance Archive::Tar depends on Perl::OSType one day, which will be fine on Perls >5.13.9 .
But on perls <5.13.9, installing Archive::Tar will install Perl::OSType , with the former going to privlib, the latter going to sitelib.
This is not so much of a problem until one attempts to purge all of sitelib to return the @INC state to "just installed" condition, wherein Archive::Tar will become suddenly broken, as the more recent Archive::Tar will be still available ( after clobbering its predecessor in @INC ), but its dependencies will not, and no CPAN tools can solve this problem yet.
Also, if you're ever on a version of perl where Perl > CPAN, you could accidentally install Archive::Tar from CPAN, which results in an irreversible downgrade.