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cmd/go: "go.mod" has non-.../v23 module path when "v23" is just a directory #33035

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jayconrod opened this issue Jul 10, 2019 · 2 comments

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commented Jul 10, 2019

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

  • go version devel +fbaf881cc62 Mon Jul 8 14:31:42 2019 +0000 darwin/amd64
  • go1.13beta
  • go1.12.7

Does this issue reproduce with the latest release?

yes

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

go env Output
$ go env
GO111MODULE="on"
GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/jayconrod/Library/Caches/go-build"
GOENV="/Users/jayconrod/Library/Application Support/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GONOPROXY=""
GONOSUMDB=""
GOOS="darwin"
GOPATH="/Users/jayconrod/go"
GOPRIVATE=""
GOPROXY="direct"
GOROOT="/Users/jayconrod/Code/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/Users/jayconrod/Code/go/pkg/tool/darwin_amd64"
GCCGO="gccgo"
AR="ar"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD="/Users/jayconrod/Code/test/go.mod"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/rq/x0692kqj6ml8cvrhcqh5bswc008xj1/T/go-build600119194=/tmp/go-build -gno-record-gcc-switches -fno-common"

What did you do?

In a directory outside GOPATH without go.mod (e.g., $HOME):

GOPROXY=direct go list v.io/v23/context

At the time of this writing, v.io points to github.com/vanadium/core. master is 31f2bd66a7da. The latest semver tag is v0.1.3.

Note that v.io is the module path, not v.io/v23. v23 is just a subdirectory, not a semantic import version suffix.

What did you expect to see?

This is what is printed if v.io is listed in module requirements or if GOPROXY=https://proxy.golang.org:

v.io/v23/context

What did you see instead?

go: finding v.io/v23/context latest
go: finding v.io/v23 latest
go: downloading v.io/v23 v23.0.0-20190603052200-31f2bd66a7da
can't load package: package v.io/v23/context: unknown import path "v.io/v23/context": cannot find module providing package v.io/v23/context

@jayconrod jayconrod added this to the Go1.14 milestone Jul 10, 2019

@jayconrod

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commented Jul 10, 2019

This seems to be a bug in modload.QueryPackage. In order to find what module provides this package, we try various prefixes of the package path:

  1. v.io/v23/context - no package found
  2. v.io/v23 - invalid module
  3. v.io - correct.

The error in (2) prevents us from proceeding with (3).

Not considering this to be a 1.13 release blocker since it's not a regression from 1.12.

@siddharthab

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commented Jul 10, 2019

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