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cmd/go: case mismatch on Windows #25992

millergarym opened this issue Jun 21, 2018 · 3 comments


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commented Jun 21, 2018

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

go 1.10.3
vgo commit c07973ea63c163b154225425f63290d022df8650

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


What did you do?


package vgot // import "some.package/p/vgot"

import (
	_ ""
	_ ""


module some.package/p/vgot

vgo build

What did you see instead?

			return nil, fmt.Errorf("downloaded %q and got module %q", mod.Path, mpath)

@gopherbot gopherbot added this to the vgo milestone Jun 21, 2018


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commented Jun 21, 2018


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commented Jul 6, 2018

I think what's going on here is that the (old) docker you got
has its own import of "",
and then your code has an import of "",
and the two collide in the GOPATH/src/mod/cache/download tree.

Unfortunately, the layout of that tree was chosen to match the
HTTP REST API file tree, so it's not a purely internal detail we can
just change (using "_sirupsen" for "Sirupsen" for example).

@rsc rsc added NeedsDecision and removed NeedsInvestigation labels Jul 6, 2018

@rsc rsc modified the milestones: vgo, Go1.11 Jul 12, 2018

@rsc rsc added the modules label Jul 12, 2018

@rsc rsc changed the title x/vgo: case mismatch on Windows cmd/go: case mismatch on Windows Jul 12, 2018


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commented Jul 17, 2018

Change mentions this issue: cmd/go/internal/modfetch: do not rely on file system for case sensitivity

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