Ah, Lion, you stealthy beast. At first you pretended to be fine with RVM, but it was a mis-lead. I reinstalled Homebrew and RVM, and you did seem content. Rubies waiting where they should be, even with their gemsets attached. But then I tried to use sqlite, and you just growled errors at me. Even after upgrading XCode, you still insist that I "have to install development tools first."
For the record, when upgrading to Lion:
- Finish with the Lion upgrade.
- Go to the App Store and download XCode 4. It's free.
- After XCode 4 finishes downloading (over an hour in my case, but your mileage may vary), open "/Applications/Install XCode". Let it too do its stuff.
$ brew update
$ brew install --force sqlite
$ rvm gem head
$ rvm --force install 1.9.3# whatever Ruby version you use; lather, rinse, repeat
$ gem install sqlite3# or bundle install sqlite3, if using Bundler
Forcing RVM to reinstall its Rub(y|ies) is probably necessary if you have any gem that relies on C headers.
Homebrew is merely optional. But sqlite relies on the library it installs, and I try to not carry forward messiness that's bound to bite me on the ass later.
Shout outs to Frank Lakatos of Faking Fantastic for the RVM fix, and to Jörg W Mittag's explanation on Stackoverflow about CGems.
UPDATE: Apple has release a UNIX tools package for Lion which contains the necessary headers.