# Gems madness - require path hoopty? **URL:** \ **Category:** Ruby\ **Created:** [December 26, 2007, 12:48am UTC](https://www.ruby-forum.com/t/gems-madness-require-path-hoopty/124172 "2007-12-26T00:48:21Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Giles\_B](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/848f3c/32.png) [@Giles\_B](https://www.ruby-forum.com/u/Giles_B)\ **Post date:** [December 26, 2007, 12:48am UTC](https://www.ruby-forum.com/t/gems-madness-require-path-hoopty/124172/1 "2007-12-26T00:48:21Z")
There’s a nifty gem called MP4Info which enables you to get ID3-style metadata from non-MP3 files, such as AAC files. It’s dag gol darn usefulness and then some, but my attempts at requiring it were troubled. This works: sudo gem install MP4Info This works: require ‘/opt/local/lib/ruby/gems/1.8/gems/MP4Info-0.3.1/lib/mp4info’ These don’t: sudo gem install mp4info require ‘mp4info’ require ‘MP4Info’ require ‘MP4Info-0.3.1’ require ‘MP4Info-0.3.1/lib/mp4info’ Besides a test script and a few bits of test data, .wav files etc., mp4info.rb is basically the only file in the gem. Is there anything obvious I’m missing here? – Giles B. Podcast: [http://hollywoodgrit.blogspot.com](http://hollywoodgrit.blogspot.com) Blog: [http://gilesbowkett.blogspot.com](http://gilesbowkett.blogspot.com) Portfolio: [http://www.gilesgoatboy.org](http://www.gilesgoatboy.org) Tumblelog: [http://giles.tumblr.com](http://giles.tumblr.com) ---
**Author:** ![Giles\_B](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/848f3c/32.png) [@Giles\_B](https://www.ruby-forum.com/u/Giles_B)\ **Post date:** [December 26, 2007, 4:32am UTC](https://www.ruby-forum.com/t/gems-madness-require-path-hoopty/124172/2 "2007-12-26T04:32:18Z")
On Dec 25, 2007, at 7:45 PM, ara.t.howard wrote: > On Dec 25, 2007, at 4:47 PM, Giles B. wrote: > > > Besides a test script and a few bits of test data, .wav files etc., > > mp4info.rb is basically the only file in the gem. Is there anything > > obvious I’m missing here? > > gemspec.rb Did you also maybe forget to add require ‘rubygems’ to the top? ---
**Author:** ![Giles\_B](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/848f3c/32.png) [@Giles\_B](https://www.ruby-forum.com/u/Giles_B)\ **Post date:** [December 26, 2007, 1:46am UTC](https://www.ruby-forum.com/t/gems-madness-require-path-hoopty/124172/3 "2007-12-26T01:46:13Z")
On Dec 25, 2007, at 4:47 PM, Giles B. wrote: > Besides a test script and a few bits of test data, .wav files etc., > mp4info.rb is basically the only file in the gem. Is there anything > obvious I’m missing here? gemspec.rb a @ [http://codeforpeople.com/](http://codeforpeople.com/) ---
**Author:** ![Giles\_B](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/848f3c/32.png) [@Giles\_B](https://www.ruby-forum.com/u/Giles_B)\ **Post date:** [December 26, 2007, 5:00am UTC](https://www.ruby-forum.com/t/gems-madness-require-path-hoopty/124172/4 "2007-12-26T05:00:58Z")
On Dec 25, 8:47 pm, Giles B. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Besides a test script and a few bits of test data, .wav files etc., > mp4info.rb is basically the only file in the gem. Is there anything > obvious I’m missing here? D:\Users\Luis\>gem search --remote mp4info \*\*\* REMOTE GEMS \*\*\* Need to update 19 gems from [http://gems.rubyforge.org](http://gems.rubyforge.org) … complete MP4Info (0.3.1, 0.3, 0.2, 0.1) MP4 tag reading library D:\Users\Luis\>gem search --remote MP4info \*\*\* REMOTE GEMS \*\*\* MP4Info (0.3.1, 0.3, 0.2, 0.1) MP4 tag reading library D:\Users\Luis\>gem install mp4info --no-ri --no-rdoc Successfully installed MP4Info-0.3.1 D:\Users\Luis\>irb irb(main):001:0\> require ‘rubygems’ =\> true irb(main):002:0\> require ‘mp4info’ =\> true irb(main):003:0\> M MP4Info MatchData Math Module Marshal MatchingData Method Mutex HTH, Luis ---
**Author:** ![Giles\_B](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/848f3c/32.png) [@Giles\_B](https://www.ruby-forum.com/u/Giles_B)\ **Post date:** [December 26, 2007, 11:14pm UTC](https://www.ruby-forum.com/t/gems-madness-require-path-hoopty/124172/5 "2007-12-26T23:14:34Z")
On Dec 25, 2007, at 15:47 PM, Giles B. wrote: > There’s a nifty gem called MP4Info which enables you to get ID3-style > metadata from non-MP3 files, such as AAC files. It’s dag gol darn > usefulness and then some, but my attempts at requiring it were > troubled. > > […] > > Besides a test script and a few bits of test data, .wav files etc., > mp4info.rb is basically the only file in the gem. Is there anything > obvious I’m missing here? $ gem install MP4Info -i ~/tmp/gems […] $ GEM\_HOME=~/tmp/gems gem which mp4info /Users/drbrain/tmp/gems/gems/MP4Info-0.3.1/lib/mp4info.rb $ GEM\_HOME=~/tmp/gems ruby -rubygems -e ‘require “mp4info”’ $ There’s nothing wrong with the gem. a) You didn’t require ‘rubygems’ before require ‘mp4info’ b) `gem env`'s ruby doesn’t match `which ruby`'s ruby. ---
**Author:** ![Giles\_B](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/848f3c/32.png) [@Giles\_B](https://www.ruby-forum.com/u/Giles_B)\ **Post date:** [December 26, 2007, 6:02pm UTC](https://www.ruby-forum.com/t/gems-madness-require-path-hoopty/124172/6 "2007-12-26T18:02:52Z")
> > Besides a test script and a few bits of test data, .wav files etc., > > mp4info.rb is basically the only file in the gem. Is there anything > > obvious I’m missing here? > > gemspec.rb Yep, that’s missing all right. I bet the gem would work better if it had a gemspec file. I’m just guessing here, but I think you’re right. :-p – Giles B. Podcast: [http://hollywoodgrit.blogspot.com](http://hollywoodgrit.blogspot.com) Blog: [http://gilesbowkett.blogspot.com](http://gilesbowkett.blogspot.com) Portfolio: [http://www.gilesgoatboy.org](http://www.gilesgoatboy.org) Tumblelog: [http://giles.tumblr.com](http://giles.tumblr.com)