fix the install documentation, one final time

[Stebalien]

No description provided.

[Stebalien]

We can't go-get due to gx.

[Mr0grog]

D'oh! Looks good to me.

[Mr0grog]

Oh wait, actually, isn’t the problem in running make install, if it’s gx? Maybe we just need to say gx is a requirement, not just Go.

[Stebalien]

make install should install gx. The problem here was that go get STUFF tries to get the gx dependencies and fails (because gx/ipfs/Qm... isn't a valid URL). Any package with gx "rewritten" imports isn't "go gettable". We leave most packages in the normal, non-gx form (with, e.g., github.com/... imports) for this reason. However, we leave go-ipfs in the rewritten form to prevent users from installing IPFS with go get github.com/ipfs/go-ipfs/cmd/ipfs (as they'd end up with the wrong dependency versions). This package needs to use gx/... paths as it depends on go-ipfs.

See: ipfs/kubo#4831

[Stebalien]

(I've updated them per CR by @bmuller)

[Mr0grog]

Ohhhh, gotcha. That makes perfect sense.