gx update expects to have the old package (being replaced) already installed

[schomatis]

The gx update command expects to find the old package being replaced already installed, otherwise it fails (it doesn't try to install itself), specifically the updateCollisionCheck function is the one looking for all the dependencies.

See ipfs/go-ds-badger#22 (comment).

[whyrusleeping]

I think there are many commands that would benefit from implicitly fetching deps as needed. Or at the very least, saying 'you have to run gx install first'

[ghost]

implicitly fetching deps as needed

Yes gx-workspace is doing that a lot too.