> Our instructions in src/tools/pgindent/README says to make sure we use > perltidy version v20090616. However, this version no longer appears to be > available for download on the link we provide -- the oldest one available > is 20140328.
Which means it can be installed with 'cpanm Perl::Tidy@20090616' or 'cpan SHANCOCK/Perl-Tidy-20090616.tar.gz' (the latter requires a BackPAN-inclusive mirror configured, e.g. cpan.metacpan.org).
BackPAN keeps all distributions ever uploaded to CPAN, unless removal is explicitly requested, e.g. for legal reasons, so there should be no need to host it ourselves.
In that case, we should at least update our instructions for how to install it. But that's definitely a better option than hosting our own copy.