[MacPorts] #58610: CPAN.pm/cpan2port needs gzip?

[MacPorts]

#58610: CPAN.pm/cpan2port needs gzip?
--------------------------+-----------------------------
 Reporter:  chrstphrchvz  |      Owner:  mojca
     Type:  defect        |     Status:  assigned
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:  2.5.4
 Keywords:                |       Port:  perl5 cpan2port
--------------------------+-----------------------------
 I have Perl 5.28.2 installed, which includes CPAN.pm 2.20; updating
 CPAN.pm to 2.26 does not resolve this issue.

 The `gzip` port is not declared as a dependency of `perl5.28`, but CPAN
 shell (`cpan-5.28`) erroneously finishes when /opt/local/bin/gzip isn't
 present. Distributions are never extracted (e.g. to `.cpan/build`), but
 CPAN shell proceeds as if modules build and are ready to install. Had CPAN
 shell worked in this example (as when `gzip` is present), then it would
 have found a Makefile.PL and compiled a few XS files:

 {{{
 $ cpan Tk::IDElayout
 Reading '/Users/christopherchavez/.cpan/Metadata'
   Database was generated on Sat, 15 Jun 2019 17:17:02 GMT
 Running install for module 'Tk::IDElayout'
 CPAN: Digest::SHA loaded ok (v6.02)
 CPAN: Compress::Zlib loaded ok (v2.086)
 Checksum for /Users/christopherchavez/.cpan/sources/authors/id/C/CA/CAC
 /Tk-IDElayout-0.34.tar.gz ok
 sh: /opt/local/bin/gzip: No such file or directory
 CPAN: YAML loaded ok (v1.29)
 CPAN: CPAN::Meta::Requirements loaded ok (v2.140)
 CPAN: CPAN::Meta loaded ok (v2.150010)
 Package seems to come without Makefile.PL.
   (The test -f "/Users/christopherchavez/.cpan/build/CAC-1/Makefile.PL"
 returned false.)
   Writing one on our own (setting NAME to TkIDElayout)
 Configuring C/CA/CAC/Tk-IDElayout-0.34.tar.gz with Makefile.PL
 Generating a Unix-style Makefile
 Writing Makefile for TkIDElayout
 Writing MYMETA.yml and MYMETA.json
   CAC/Tk-IDElayout-0.34.tar.gz
   /opt/local/bin/perl5.28 Makefile.PL -- OK
 Running make for C/CA/CAC/Tk-IDElayout-0.34.tar.gz
 CPAN: Module::CoreList loaded ok (v5.20190419)
   CAC/Tk-IDElayout-0.34.tar.gz
   /usr/bin/make -- OK
 Running make test
 No tests defined for TkIDElayout extension.
   CAC/Tk-IDElayout-0.34.tar.gz
   /usr/bin/make test -- OK
 Running make install
 Password:
 }}}

 As a result, running `cpan2port` (20190228) without `gzip` present fails,
 because the distribution was never extracted:

 {{{
 $ cpan2port -v -t Tk::IDElayout
 Reading '/Users/christopherchavez/.cpan/Metadata'
   Database was generated on Sat, 15 Jun 2019 17:17:02 GMT
 Tk::IDElayout is not perl porter
 Tk::IDElayout (no description available)
 Tk::IDElayout will show deps
 Running get for module 'Tk::IDElayout'
 Checksum for /Users/christopherchavez/.cpan/sources/authors/id/C/CA/CAC
 /Tk-IDElayout-0.34.tar.gz ok
 sh: /opt/local/bin/gzip: No such file or directory
 trying to find dist in /Users/christopherchavez/.cpan/build/Tk-
 IDElayout-0.34*
 trying to find dist in 1*
 (((can't find dist at /opt/local/bin/cpan2port line 127.
 ))) at /opt/local/bin/cpan2port line 353.
         main::foreach_pkg(CODE(0x7fc08f004248)) called at
 /opt/local/bin/cpan2port line 378
 }}}

 I found a ticket that another MacPorts user opened for CPAN which seems
 related: https://rt.cpan.org/Public/Bug/Display.html?id=128063. I'm not
 sure their resolution of making `cpan-5.xx` use /usr/bin/gzip (if
 /opt/local/bin/gzip is missing) is appropriate, since the intention might
 be for ports to only use MacPorts' gzip.

-- 
Ticket URL: <https://trac.macports.org/ticket/58610>
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