On 13 Jul 2010, at 06:11, Kenta Murata wrote:

> Bug #3564: 'gem uninstall' doesn't remove executables which were =
installed with --format-executable option
> http://redmine.ruby-lang.org/issues/show/3564
>=20
> Author: Kenta Murata
> Status: Open, Priority: Normal
> Category: lib, Target version: 1.9.2
> ruby -v: ruby 1.9.2dev (2010-07-11 revision 28613) =
[x86_64-darwin10.4.0]
>=20
> 'gem uninstall' command doesn't remove executables installed with =
--format-executable option, but ones installed without the option.
> The command, unfortunately, doesn't allow us the option so we are =
obliged to remove the executables manually.
>=20
> Operation Log:
>=20
> [12:15:24#104]mrkn$ ls /opt/rubies/bin/spec*
> /opt/rubies/bin/spec       /opt/rubies/bin/spec-1.9.2
> [14:03:11#105]mrkn$ gem-1.9.2 uninstall --format-executable rspec
> ERROR:  While executing gem ... (OptionParser::InvalidOption)
>    invalid option: --format-executable
> [14:03:47#106]mrkn$ gem-1.9.2 uninstall rspec
> Remove executables:
>        autospec, spec
>=20
> in addition to the gem? [Yn]  y
> Removing autospec
> Removing spec
>=20
> You have requested to uninstall the gem:
>        rspec-1.3.0
> addressable-2.1.2 depends on [rspec (>=3D 1.0.8)]
> autotest-growl-0.2.4 depends on [rspec (>=3D 1.3.0)]
> bundler-0.9.26 depends on [rspec (>=3D 0)]
> g-1.4.0 depends on [rspec (>=3D 0)]
> If you remove this gems, one or more dependencies will not be met.
> Continue with Uninstall? [Yn]  y
> Successfully uninstalled rspec-1.3.0
> [14:04:24#107]mrkn$ ls /opt/rubies/bin/spec*
> /opt/rubies/bin/spec-1.9.2


This is a known issue in RubyGems, I have proposed that =
--format-executable be removed as a command line option from the install =
command, and only exist in the configuration (gemrc). This way behaviour =
will be consistent unless the user explicitly changes the configuration. =
I have not yet come around to writing either solution, or removing the =
option.

There is a core problem with this whereby RubyGems does not maintain a =
manifest of items installed, and as such it is not aware at the time of =
uninstall, which binary name was installed with the package. Arbitrary =
use of the format executable parameter to install is for now, very much =
not recommended.

This bug should be reported to one of the RubyGems trackers, either at:

 http://help.rubygems.org

or

 http://rubyforge.org/tracker/?group_id=3D126

Please do note though, that this is a dup of a bug already in the =
rubyforge tracker:

 =
http://rubyforge.org/tracker/index.php?func=3Ddetail&aid=3D25826&group_id=3D=
126&atid=3D575

Thank you for the report. This ticket may be closed on the ruby redmine.=