try to get project gems from GEM_PATH first

[zzzhc]

Getting gem paths from ruby output is a little slow

[tpope]

This assumes that $GEM_PATH contains only gems from the current bundle. Even the most OCD developers I know don't do rvm gemset empty every time they bundle install, so this is a very unsafe assumption.

See #4 for more discussion about the speed issue.

[zzzhc]

There is no such assumption. Multi projects can install gems to same $GEM_PATH, the pull request only detect whether $GEM_PATH/gems/gemname-version exists.

[tpope]

Hmm, I guess I didn't look close enough. I'll put it through its paces on Monday. @bjeanes, would you give this a try as well?

[bjeanes]

Sure, I'll try it out at work tomorrow

[tpope]

Okay, I've had good results with the first commit. The two subsequent additions have not been so kind to me, and raise numerous concerns at any rate. They appear to be more along the lines of "make crude guesses based on common rvm practices."

@bjeanes, how has it been working out for you?

[bjeanes]

Honestly, I've spent the last 4 weeks in a world of managing teams and projects and not coding :(

I'll chime in if/when I sit down and work on a Ruby app again, but as of know I don't have much to add, sadly...

[zzzhc]

@tpope , yes, the last commits just guess the correct ruby version, it may be fail if there are some complex logic in .rvmrc. Ignore them are fine for me, or provide an option to disable detecting rvm automatically?

[tpope]

I've sat on this for long enough. The first commit has been cherry-picked in. My uneasiness about the other two commits stands.

Thanks!

[tpope]

I think I've gotten feature parity with everything in the other two commits, with the possible exception of some edge cases around the rvm version. The only time it should be shelling out to bundler now is when their are platform specific gems in the mix, or you've explicitly done bundle --without. That information isn't in the lock file so I haven't decided on a solution for that yet.

Open a new issue for further refinements. Thanks for steering me in the right direction, @zzzhc.