Pre-upgrade "App::cpanminus" and "ExtUtils::MakeMaker"

[tianon]

Summary

On Perl 5.18 and older, cpanm --installdeps was not picking up Sub::Util and IO::Socket::IP properly, and updating ExtUtils::MakeMaker fixes it. I included an update of App::cpanminus just for good measure.

Motivation

Fixes #1508 😄 🎂

References

See #1508 for more details, especially #1508 (comment). 👍

[karenetheridge]

What is missing in older EUMM that these prereqs are missing? Doesn't that suggest that the CONFIGURE_REQUIRES entry for EUMM in Makefile.PL should be increased?

[tianon]

@karenetheridge a very good point, although definitely out of my depth -- hopefully this gives someone else enough to look into that 😇 ❤️

Edit: in case it helps, Perl 5.18 has EUMM version 6.66 and 5.20 has EUMM version 6.98

[tianon]

Hmm, even just cpanm -n ExtUtils::MakeMaker@6.68 seems to be enough to fix it.

Looking through https://metacpan.org/diff/file?target=BINGOS/ExtUtils-MakeMaker-6.68/&source=BINGOS%2FExtUtils-MakeMaker-6.66#Changes, I think this might be relevant:

+6.67_04 Mon Jun 10 20:18:25 BST 2013
+    Bug fixes
+    * Address RT#85406, where specifying 'meta-spec' in
+      META_[ADD|MERGE] would remove all prereqs (bingos)

(The Mojolicious Makefile.PL includes 'meta-spec' => {version => 2}, in META_MERGE.)

[karenetheridge]

okay then, I would recommend adding CONFIGURE_REQUIRES => '6.68' to Makefile.PL, and then you should be able to remove all workarounds from docker and workflow configs.

thanks for tracking this down @tianon!