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proposal: cmd/go: mark test dependencies in go.mod and go list -m #44743

DeedleFake opened this issue Mar 2, 2021 · 1 comment


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There have been a number of requests for a test dependencies section in go.mod. These requests actually don't make sense with the way that go.mod works, because it's really just a list of rules to follow for resolving dependencies, not a list of dependencies. The actual list of dependencies is per-package, not per-module, and is determined by the actual import statements in the code itself. The go tool, however, does add some extra information to the go.mod file in the form of an // indirect comment after dependencies that are only depended on by a dependency.

I propose adding an alternate comment flag, test, to indicate that a dependency is only required by tests. Along with this, add an indication of this to the Module struct used for formatting go list -m output.

@gopherbot gopherbot added this to the Proposal milestone Mar 2, 2021
@ianlancetaylor ianlancetaylor added this to Incoming in Proposals (old) Mar 2, 2021
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komuw commented Mar 3, 2021

I tried implementing this sometime back as a cli at; (has bugs).

I would be in favor of the go tool adding // test comment.

@rsc rsc changed the title proposal: mark test dependencies in go.mod and go list -m proposal: cmd/go: mark test dependencies in go.mod and go list -m Aug 10, 2022
@bcmills bcmills added the GoCommand cmd/go label Sep 7, 2023
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5 participants