Download all gems dependencies

Question

I want to install compass by downloading any required file and taking them to another machine without internet connection. I have downloaded the source package

Answer 1

Hm. That's a little tough. gem dependency will show you dependencies for one gem, but it won't go all the way down the tree.

➔ gem dependency compass
Gem compass-0.10.5
  haml (>= 3.0.4, runtime)

Gem compass-0.10.6
  haml (>= 3.0.4, runtime)

➔ gem dependency haml   
Gem haml-3.0.21
  maruku (>= 0.5.9, development)
  yard (>= 0.5.3, development)

Gem haml-3.0.22
  maruku (>= 0.5.9, development)
  yard (>= 0.5.3, development)

Gem haml-3.0.23
  maruku (>= 0.5.9, development)
  yard (>= 0.5.3, development)

Gem haml-3.0.24
  maruku (>= 0.5.9, development)
  yard (>= 0.5.3, development)

"development" means it's only required if you are developing the gem itself. "runtime" means you need it to use it.

so in this case, the only dependency is haml. if it were a more complicated gem, i don't know a good way to generate the whole tree.