[Distutils] Decompressing .egg files

[Giovanni Bajo]

Hello,

is there an easy_install option to decompress existing .egg files? I could
probably run "easy_install -Z name" but that could potentially download and
install another version. I'd need an option which pretty much this semantic:
"if extension `name` exists and its current version is packaged as egg file,
decompress it into a directory". Does it exist already?
-- 
Giovanni Bajo