From: David Thompson <dthompson2@worcester.edu>
To: guix-devel@gnu.org
Subject: Re: [PATCH] build: ruby: Patch executables to set necessary gem load path.
Date: Sat, 07 Mar 2015 19:45:00 -0500 [thread overview]
Message-ID: <87vbic2u7n.fsf@fsf.org> (raw)
In-Reply-To: <871tl04aux.fsf@fsf.org>
David Thompson <dthompson2@worcester.edu> writes:
> This patch addresses the issue of how to ensure that Ruby executables
> are able to load all of the additional Ruby libraries that they need in
> order to work: with a new 'patch-executables' build phase. Instead of
> using wrap-program, I instead take advantage of the wrappers that the
> 'gem' command already creates for Ruby executables. There's guaranteed
> to be a line in which the executable's host gem is loaded that looks
> like `gem 'foo', version`. I simply insert a Ruby code snippet above it
> that adds all of the necessary gems to the 'Gem.path' array.
>
> Users of Ruby programs must still apply the $GEM_PATH suggested by 'guix
> package --search-paths' in order for the gem that the executable belongs
> to (the gem that they explicitly installed) to be found. I think this
> is reasonable and much like how you must set the proper load paths for
> Guile programs to work.
I can see that this won't be enough for any application whose Ruby gem
dependency tree is deeper than 1. I suppose I could use the transitive
inputs of the package, which would get everything, but that feels a bit
ugly. More thought needed...
--
David Thompson
Web Developer - Free Software Foundation - http://fsf.org
GPG Key: 0FF1D807
Support the FSF: https://fsf.org/donate
next prev parent reply other threads:[~2015-03-08 0:45 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-08 0:00 [PATCH] build: ruby: Patch executables to set necessary gem load path David Thompson
2015-03-08 0:45 ` David Thompson [this message]
2015-03-09 22:19 ` Ludovic Courtès
2015-03-09 22:18 ` Ludovic Courtès
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