On Tue, 22 May 2012 23:16:00 -0400 Michael Orlitzky <mich...@orlitzky.com> wrote:
> On 05/22/2012 09:10 PM, Chris Stankevitz wrote: > > > > How was I supposed to learn the "proper" way of dealing with this > > RUBY-related system change? That change was committed two-and-a-half years ago in the eclass: http://archives.gentoo.org/gentoo-dev/msg_2305dbeaaf5b02cb74a84c9b06333708.xml and the Gentoo Ruby project has a section on it http://www.gentoo.org/proj/en/prog_lang/ruby/index.xml Actually I learnt the RUBY_TARGETS from flameeyes's blog two years ago http://blog.flameeyes.eu/2010/02/ruby-ng-package-in-a-bottle-or-learn-how-to-write-a-new-ruby-ebuild > The way I learned was by watching the emerge output: > > $ emerge -pv dev-ruby/rails > > These are the packages that would be merged, in order: > > Calculating dependencies... done! > [ebuild N ] app-admin/eselect-rails-0.16 2 kB > [ebuild N ] dev-ruby/tmail-1.2.7.1-r2 USE="-debug -doc -test" > RUBY_TARGETS="ruby18 -jruby -ree18" 436 kB > > and wondering, "RUBY_TARGETS, what the hell is that?" > > I'm sure there's a proper way, but that's the way I've discovered all > of the USE_EXPAND variables. LINGUAS was the first, then I noticed > ALSA_CARDS, APACHE2_MODULES, XFCE_PLUGINS... > > The default list can be found in, > > /usr/portage/profiles/base/make.defaults I suggest keeping an eye on ${PORTDIR}/profiles/desc directory too. This is where every one of the USE_EXPAND variables is explained in details. Kerwin.
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