GNU bug report logs - #27438
[PATCH] Specify native search path for all ruby packages

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From: Ben Woodcroft <b.woodcroft <at> uq.edu.au>
To: Christopher Baines <mail <at> cbaines.net>, 27438 <at> debbugs.gnu.org
Subject: [bug#27438] [PATCH] Specify native search path for all ruby packages
Date: Wed, 21 Jun 2017 21:47:54 +1000

Hi Chris,


On 21/06/17 16:36, Christopher Baines wrote:
> Without specifying this explicitly in each definition, the GEM_PATH is
> inherited and the version is that of the inherited package.
>
I'm not sure if this is by design, but the version of the gems folder is 
embedded in the build of each rubygem e.g. 'ruby-hoe' includes
/gnu/store/d867l5i2dqd5qnq4qlsrcwwb0x3443fl-ruby-hoe-3.16.0/lib/ruby/gems/2.4.0

So, in this environment, "require 'hoe'" fails after applying your patch
./pre-inst-env guix environment -C --ad-hoc ruby <at> 2.2 ruby-hoe

Having said that, the gems bundled with each ruby are in a directory 
with the actual version e.g. ruby <at> 2.2 has this path
/gnu/store/f43dirk254lfhmgjs3sf515cpfl8d46q-ruby-2.2.7/lib/ruby/gems/2.2.0

This isn't ideal, any ideas on what we should do? Specify both paths maybe?
Thanks,
ben

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