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I am trying to install the dependencies for a Go project that uses Go modules. I have GO111MODULES=on in my environment.

No matter what command I run (go build, go get, go clean --modcache, ...) it fails with output something like:

sdgluck$ go build .
go: finding cloud.google.com/go v0.26.0
go: cloud.google.com/go@v0.26.0: unknown revision refs/tags/v0.26.0
go: error loading module requirements

The last line seems to appear in the output for every command, alongside some mention of cloud.google.com/go.

How can I fix this and just get Go to install the modules for this project?

sdgluck
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1 Answers1

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As stated in a comment below, the proper command to clear the Go modules cache is go clean -modcache (just one dash).

If that still doesn't work then you can try manually clearing your Go mod folder.

For example, if your GOPATH was /Users/spongebob/go:

rm -rf /Users/spongebob/go/pkg/mod
sdgluck
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    The proper way to clean the module cache is `go clean -modcache`. – Volker May 10 '19 at 11:20
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    `rm -rf …/pkg/mod` no longer works reliably, since Go by default marks the subdirectories readonly (unless overridden by `GOFLAGS=-modcacherw`). You’d have to first `chmod -R u+w …/pkg/mod` before you can run `rm -rf …`. Or use `go clean -modcache` as mentioned. – Konrad Rudolph Apr 20 '21 at 13:43