Eu esperava que emerge --search
fornecesse essa funcionalidade, mas parece que ela só mostra a versão mais recente.
$ [-] emerge --search eix
Searching...
[ Results for search key : eix ]
[ Applications found : 1 ]
* app-portage/eix
Latest version available: 0.29.3
Latest version installed: 0.29.3
Size of files: 536 kB
Homepage: http://eix.berlios.de
Description: Search and query ebuilds, portage incl. local settings, ext. overlays, version changes, and more
License: GPL-2
Então, para responder à sua pergunta: Eu tenho usado eix
por tanto tempo, eu realmente não lembro o que eu fiz antes.
$ [-] eix eix$ -c
[I] app-portage/eix
Available versions: 0.25.5{tbz2} 0.29.3{tbz2} ~0.29.6 ~0.30.0 ~0.30.1 {clang debug +dep doc nls optimization security sqlite strong-optimization strong-security swap-remote tools zsh-completion LINGUAS="de ru"}
Installed versions: 0.29.3{tbz2}(10:44:38 07.09.2013)(dep nls -clang -debug -doc -optimization -security -sqlite -strong-optimization -strong-security -swap-remote -tools -zsh-completion LINGUAS="-de -ru")
Homepage: http://eix.berlios.de
Description: Search and query ebuilds, portage incl. local settings, ext. overlays, version changes, and more