Unable to install kubetest2

[liu-cong]

I tried to install kubetest2 following the README.md. And I ran into issues with github.com/containers/image/v5/manifest

GO111MODULE=on go get sigs.k8s.io/kubetest2/...@latest                                                   

go: downloading sigs.k8s.io/kubetest2 v0.0.0-20210322183049-358715462ab9
go: downloading github.com/octago/sflags v0.2.0
go: downloading k8s.io/release v0.7.1-0.20210204090829-09fb5e3883b8
go: downloading k8s.io/test-infra v0.0.0-20200617221206-ea73eaeab7ff
go: downloading golang.org/x/sys v0.0.0-20201112073958-5cba982894dd
go: downloading cloud.google.com/go v0.51.0
go: downloading github.com/go-git/go-git/v5 v5.2.0
go: downloading github.com/containers/image/v5 v5.9.0
go: downloading github.com/shirou/gopsutil v0.0.0-20190901111213-e4ec7b275ada
go: downloading github.com/shirou/gopsutil/v3 v3.20.12
go: downloading golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9
go: downloading golang.org/x/oauth2 v0.0.0-20191202225959-858c2ad4c8b6
go: downloading github.com/google/go-github/v33 v33.0.0
go: downloading github.com/containers/libtrust v0.0.0-20190913040956-14b96171aa3b
go: downloading github.com/containers/ocicrypt v1.0.3
go: downloading github.com/docker/docker v1.4.2-0.20200309214505-aa6a9891b09c
go: downloading cloud.google.com/go/storage v1.0.0
go: downloading golang.org/x/net v0.0.0-20201110031124-69a78807bb2b
go: downloading github.com/klauspost/compress v1.11.3
go: downloading github.com/klauspost/pgzip v1.2.5
go: downloading github.com/ulikunitz/xz v0.5.8
go: downloading github.com/StackExchange/wmi v0.0.0-20190523213315-cbe66965904d
go: downloading google.golang.org/api v0.15.1
go: downloading google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013
go: downloading golang.org/x/exp v0.0.0-20191227195350-da58074b4299
go: downloading golang.org/x/tools v0.0.0-20200616133436-c1934b75d054
go: downloading go.opencensus.io v0.22.2
go: downloading github.com/go-ole/go-ole v1.2.4
go: downloading github.com/golang/groupcache v0.0.0-20191227052852-215e87163ea7
# github.com/containers/image/v5/manifest
../../../pkg/mod/github.com/containers/image/v5@v5.9.0/manifest/oci.go:44:234: undefined: v1.MediaTypeImageLayerNonDistributableZstd
../../../pkg/mod/github.com/containers/image/v5@v5.9.0/manifest/oci.go:44: undefined: v1.MediaTypeImageLayerZstd
../../../pkg/mod/github.com/containers/image/v5@v5.9.0/manifest/oci.go:101:28: undefined: v1.MediaTypeImageLayerNonDistributableZstd
../../../pkg/mod/github.com/containers/image/v5@v5.9.0/manifest/oci.go:106:28: undefined: v1.MediaTypeImageLayerZstd

[amwat]

You might be most likely running it from a working directory which is another project using go modules.

Unfortunately, for go versions < 1.16 installing a binary through go get also tries to update the modules of the project you are in. golang/go#30515

Try running the same command from outside a project cd $HOME (maybe?).

If you are on go1.16+ you can use install instead of get https://golang.org/doc/go1.16#go-command
GO111MODULE=on go install sigs.k8s.io/kubetest2/...@latest

This would be a good addition to the README.

/kind documentation

[liu-cong]

Thanks @amwat ! Your suggestion worked!

[BenTheElder]

I think it's OK to leave the readme, this go quirk is not specific to this project, and can cause issues in any project with go get, but I've never seen this in a readme.

original issue is resolved now.