Add perl as a run dep

[ocefpaf]

Ping @kmuehlbauer this might help fix our problems.

[conda-forge-linter]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

[kmuehlbauer]

Seems it needs perl also at build time...

[ocefpaf]

Seems it needs perl also at build time...

I did that to investigate if autoconf was the right place for the perl dependency here, but I guess m4 is. (At least my Linux distro builds m4 with perl.)

[ocefpaf]

I don't know what is causing the perl conflict. It is definitely not m4 which is the only dependency for autoconf.

Error:  Package missing in current linux-64 channels: 
  - perl 5.18.2*

@msarahan do you have any idea of what I am doing wrong here?

[msarahan]

Yeah, conda's dumb in this case. The default Perl version is the one you see, but that's not available. Pin to >=5.20 and it should work.

[ocefpaf]

Thanks @msarahan! That solved it!! We need to figure out a pinning strategy for perl and add it here.

Does perl 5.20.* sounds OK? If so I can put a PR to add that to the pin_the_slow_way.py script. (Ping @pelson.)

[jakirkham]

I thought we fixed this perl issue. @pelson, any idea why it still doesn't respect the version in the feedstock?

[pelson]

I thought we fixed this perl issue. @pelson, any idea why it still doesn't respect the version in the feedstock?

Good question. I definitely added conda-build-all perl support (https://github.com/SciTools/conda-build-all/blob/master/conda_build_all/version_matrix.py#L217) so yes, the CONDA_PERL environment variable should be being set appropriately (and automatically).

[jakirkham]

Ah, but we didn't add it to conda-smithy. ( conda-forge/conda-smithy#190 )

[jakirkham]

FYI this is not the last time perl issues will come out of the woodwork. I expect to see several in the near future. We were implicitly depending on perl that was installed with git from yum. However, we now use our git that does not install perl currently (may change). As a result, a few packages may need to be fixed to have perl as a build and/or run time dependency.

[jakirkham]

FYI automake had the same issue, but it is now fixed.