Constraint source fields does not work with non-existing packages

[sttts]

I am trying to require a repository that does not exist yet. To make that work I specify an existing repository in the source of a corresponding constraint. It looks like this does not help to make dep ensure work:

in the following example k8s.io/kube-gen is not existing yet. But github.com/deads2k/fake-kube-gen does. Yet, it does not work:

$ deb ensure -v
The following errors occurred while deducing packages:
  * "k8s.io/kube-gen": unable to deduce repository and source type for "k8s.io/kube-gen": unable to read metadata: go-import metadata not found

validateParams: could not deduce external imports' project roots

If I switch the requirement to an existing repo, the source constraints works fine.

Gopkg.toml:

required = [
  "github.com/openshift/origin/pkg/template/apis/template",
  "github.com/openshift/origin/pkg/template/apis/template/v1",
  "k8s.io/kube-gen",
]

[[constraint]]
  name = "k8s.io/kube-gen"
  branch = "master"
  source = "github.com/deads2k/fake-kube-gen"

[sdboyer]

good morning!

I am trying to require a repository that does not exist yet.

for a second i thought we were doing some kind of Sartrean dependency lemma, and now i can't stop wondering about the hermeneutics of dep 😆❤️

in the following example k8s.io/kube-gen is not existing yet. But github.com/deads2k/fake-kube-gen does.

see #860 😄

[sttts]

:) Looks like #860 describes the same issue. Closing.