Mockgen installed with go modules cannot find own source

[Helvind]

I use go modules, and have followed the installation guidelines:

go get github.com/golang/mock/gomock
go install github.com/golang/mock/mockgen

But when I run mockgen it failes to find mockgen/models because it does not expect the source to be in the pkg/mod folder, but in src

[shreyashk2006]

@bhcleek: What was the resolution to this?

[rodoufu]

I've runned this:

$ go get github.com/golang/mock/gomock
$ go install github.com/golang/mock/mockgen

But when I try to find mockgen nothing is shown.

$ which mockgen
$

[poy]

Is $GOPATH/bin in your PATH?

[rodoufu]

Is $GOPATH/bin in your PATH?

Yes, the soluiton was:

go get golang.org/x/tools/go/packages

Now it's working, thanks.

[CssHammer]

@Helvind have you found the solution?

[tommyjcarpenter]

I am still having this issue and the solution of packages did not fix it.

In my case I am trying to bump quay.io/goswagger/swagger:v0.23.0 to quay.io/goswagger/swagger:v0.24.0 which leads to

# xxx/models
../../models/cluster.go:230:12: undefined: validate.EnumCase
../../models/job.go:142:12: undefined: validate.EnumCase
../../models/job.go:185:12: undefined: validate.EnumCase
# xxx/models
../../models/cluster.go:230:12: undefined: validate.EnumCase
../../models/job.go:142:12: undefined: validate.EnumCase
../../models/job.go:185:12: undefined: validate.EnumCase
prog.go:12:2: cannot find package "github.com/golang/mock/mockgen/model" in any of:
        /usr/local/Cellar/go/1.14.5/libexec/src/github.com/golang/mock/mockgen/model (from $GOROOT)
        /Users/tommy/Development/go/src/github.com/golang/mock/mockgen/model (from $GOPATH)
2020/07/22 08:58:17 Loading input failed: exit status 1
worker/cluster_manager.go:17: running "mockgen": exit status 1
make: *** [generate] Error 1

[fefi42]

I have had the same issue

updating all go-openapi to the newest versions in go.mod solved it.

[DevilzOwn]

@tommyjcarpenter Were you able to find a solution for this? What was your workaround for this?
Why does it look into local directories for "github.com/golang/mock/mockgen/model" ?

[tommyjcarpenter]

@DevilzOwn unfortunately, I am no longer at the company with that codebase - it's been a couple of years about and I forget those details :(. Sorry!

However, there's a non-0 chance I will be working with this package again soon, so maybe I'll be back here.