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cmd/go: go get panics on multi-module repository with circular module dependencies #57984

jaloren opened this issue Jan 25, 2023 · 1 comment


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jaloren commented Jan 25, 2023


The module has a sub module Each module requires the other. The repo currently has no semantic git version tags.

The go.mod for the consistent module has this requirement: v0.0.0-20230125111348-4424dd2cf508

The go.mod for the rafty module has this requirement: v0.0.0-20230125105721-bee3f99a9fe5

I verified both git hashes exist in the repo. I also verified that go build works fine in the repo.

What version of Go are you using (go version)?

go version go1.19.2 darwin/arm64

Does this issue reproduce with the latest release?


What operating system and processor architecture are you using (go env)?

go env Output
$ go env

What did you do?

Josephs-MacBook-Pro:binarysearch jlorenzini$ go get -v
panic: internal error: can't find reason for requirement on

goroutine 1 [running]:
cmd/go/internal/modget.(*resolver).updateBuildList.func1({{0x140000b6c30?, 0x140003d02e8?}, {0x140000b6150?, 0x140001ac3b8?}})
	/usr/local/go/src/cmd/go/internal/modget/get.go:1760 +0xf8
cmd/go/internal/modget.(*resolver).updateBuildList(0x140001ce400, {0x104c12510, 0x1400019a000}, {0x0, 0x0, 0x0})
	/usr/local/go/src/cmd/go/internal/modget/get.go:1765 +0x450
cmd/go/internal/modget.(*resolver).applyUpgrades(0x140001ce400, {0x104c12510, 0x1400019a000}, {0x0?, 0x1?, 0x104bf78a0?})
	/usr/local/go/src/cmd/go/internal/modget/get.go:1312 +0xc0
cmd/go/internal/modget.runGet({0x104c12510, 0x1400019a000}, 0x140001b8438?, {0x140001b4030, 0x1, 0x1})
	/usr/local/go/src/cmd/go/internal/modget/get.go:351 +0x3c8
main.invoke(0x104f02280, {0x140001b4010, 0x3, 0x3})
	/usr/local/go/src/cmd/go/main.go:225 +0x2f8
	/usr/local/go/src/cmd/go/main.go:179 +0x7ac

What did you expect to see?

Go get should succeed.

What did you see instead?

Go get panics

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bcmills commented Jan 25, 2023

Duplicate of #56494

@bcmills bcmills marked this as a duplicate of #56494 Jan 25, 2023
@bcmills bcmills closed this as not planned Won't fix, can't repro, duplicate, stale Jan 25, 2023
@bcmills bcmills changed the title affected/package: go get panics on multi-module repository with circular module dependencies cmd/go: go get panics on multi-module repository with circular module dependencies Jan 25, 2023
@golang golang locked and limited conversation to collaborators Jan 25, 2024
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