A cada poucos dias, isso acontece ao fazer várias coisas no Ruby CLI (principalmente, usando o knife
utilitário Chef) no OS X (incapaz de replicar em outros ambientes; Linux, FreeBSD, etc.):
Ignoring bcrypt-3.1.7 because its extensions are not built. Try: gem pristine bcrypt-3.1.7
Ignoring bigdecimal-1.2.5 because its extensions are not built. Try: gem pristine bigdecimal-1.2.5
Ignoring ffi-yajl-1.1.0 because its extensions are not built. Try: gem pristine ffi-yajl-1.1.0
Ignoring gem-wrappers-1.2.5 because its extensions are not built. Try: gem pristine gem-wrappers-1.2.5
Ignoring gem-wrappers-1.2.4 because its extensions are not built. Try: gem pristine gem-wrappers-1.2.4
Ignoring pg-0.17.1 because its extensions are not built. Try: gem pristine pg-0.17.1
Ignoring psych-2.0.6 because its extensions are not built. Try: gem pristine psych-2.0.6
Ignoring sqlite3-1.3.9 because its extensions are not built. Try: gem pristine sqlite3-1.3.9
E, embora seja uma solução simples, continua acontecendo. Alguém já passou por isso antes?
$ ruby -v
ruby 1.9.3p484 (2013-11-22 revision 43786) [x86_64-darwin11.2.0]