Dep: Cannot install on go 1.11.2

Created on 23 Nov 2018 · 9Comments · Source: golang/dep

What `dep` command did you run?

````
~/gosdm630 $ go get -u github.com/golang/dep/cmd/dep
go: finding github.com/golang/dep/cmd/dep latest
go: finding github.com/golang/dep/cmd latest

github.com/golang/dep/gps

../go/pkg/mod/github.com/golang/[email protected]/gps/constraint.go:149:4: undefined: semver.Constraint
````

Source

andig

👍7

Most helpful comment

I met the same error.
but, I succeeded when GO111MODULE=on was changed to GO111MODULE=off.

pocari on 23 Jan 2019

👍20 🎉1

All 9 comments

I met the same error, have you found a solution of it ?

Syspretor on 6 Dec 2018

No :(

andig on 6 Dec 2018

I think this has something to do with the new Go modules code? You can see semver.Constraint exists in github.com/golang/dep/vendor/github.com/Masterminds/semver/constraints.go so something must be happening for that file to not load correctly.

Can you try turning off Go modules support and seeing if this works?

kevinburke on 6 Dec 2018

FWIW, I can't reproduce this on either tip or Go 1.11.2.

kevinburke on 6 Dec 2018

Closing thin one as I've happily moved everything to modules. Thank you for the great support received here!

andig on 5 Jan 2019

I met the same error.
but, I succeeded when GO111MODULE=on was changed to GO111MODULE=off.

pocari on 23 Jan 2019

👍20 🎉1

Here's some digging from my encounter with this.
With modules on, go get picks up the latest tag for semver:

go: extracting github.com/Masterminds/vcs v1.13.0
go: finding github.com/golang/protobuf/proto latest
go: extracting github.com/Masterminds/semver v1.4.2

However, the vendored Masterminds is from branch 2.x. In the tagged v1.4.2, Constraint is private, in 2.x it's not. I'm not 100% sure how to fix this in my case, but leaving this here to potentially satisfy someone else's curiosity.

rski on 19 Mar 2019

👍1

I fixed this by forcing semver to a particular (2.x) git commit:

go get github.com/Masterminds/semver@059deebd1619

bobzoller on 20 Jul 2019

Here's some digging from my encounter with this.
With modules on, go get picks up the latest tag for semver:
go: extracting github.com/Masterminds/vcs v1.13.0
go: finding github.com/golang/protobuf/proto latest
go: extracting github.com/Masterminds/semver v1.4.2
However, the vendored Masterminds is from branch 2.x. In the tagged v1.4.2, Constraint is private, in 2.x it's not. I'm not 100% sure how to fix this in my case, but leaving this here to potentially satisfy someone else's curiosity.

Thank you for satisfying my curiosity lol