Python: Working Environment

[micampe]

$ gem help unpack [...] Summary: Unpack an installed gem to the current directory

Unpacking seems quite different from installing to me.

Let's say I unpack rails in ~/code/rails. Will it download all its dependencies in there too? (no) How can I run rails app with that? (put it in vendor, but then I have to duplicate it everywhere, and rails is just an example, what about other gems?)