invalid version: module contains a go.mod file, so major version must be compatible: should be v0 or v1, not v2

[diiyw]

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

$ go version
go version go1.13.1 darwin/amd64

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/xxx/Library/Caches/go-build"
GOENV="/Users/xxx/Library/Application Support/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOOS="darwin"
GOPATH="/Users/xxx/go"
GOPROXY="direct"
GOROOT="/usr/local/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/darwin_amd64"
GCCGO="gccgo"
AR="ar"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD="/Users/xxx/workspace/test/apollo/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/kc/jryd_rpn6_l03ykk8q84d6740000gp/T/go-build000733542=/tmp/go-build -gno-record-gcc-switches -fno-common"

What did you do?

go get github.com/zouyx/agollo@v2.2.1

What did you expect to see?

Correctly download this module.

What did you see instead?

invalid version: module contains a go.mod file, so major version must be compatible: should be v0 or v1, not v2

I import the thirdparty module. The module has the latest version v2.2.1. A project is developing , but go forbid me to get the latest version to continue develop my project，Because the module not compatible with sematic import versioning. Through, I found a way to solve this issue

go get github.com/zouyx/agollo@master

but on go.mod, the version be taged with v1.9.1-0.20191114083447-dde9fc9f35b8 , it is ambiguous . the module not contain version v1.9.1. How i to solve this ?

[bcmills]

The error message is correct. See https://golang.org/cmd/go/#hdr-Module_compatibility_and_semantic_versioning.

The v1.9.1-0.[…] version string is a pseudo-version generated from the requested commit.

From the perspective of the go command, this is working as designed.

[wrfly]

go get github.com/google/go-github@v29.0.2: github.com/google/go-github@v29.0.2: 
invalid version: module contains a go.mod file, so major version must be compatible:
should be v0 or v1, not v29

Hi masters, how to solve this? it's under google...

[bcmills]

@wrfly, use the import path declared in the go.mod file: github.com/google/go-github/v29, not github.com/google/go-github.

[wrfly]

Okay, thank you very much, master!

[tj]

yikes, this is not great UX, I hope the Go authors will reconsider some of these choices, or at least improve the error message

[pmalek]

So I've been just bitten by this:

require (
	github.com/zeromq/goczmq v4.2.0
)

While: https://github.com/zeromq/goczmq/blob/master/go.mod has

module github.com/zeromq/goczmq/v4

But I still get:

go get -v -u github.com/zeromq/goczmq/v4
go: errors parsing go.mod:
go.mod:9: require github.com/zeromq/goczmq: version "v4.2.0" invalid: module contains a go.mod file, so major version must be compatible: should be v0 or v1, not v4

While:

go: github.com/zeromq/goczmq upgrade => v4.1.0+incompatible

gives me v4.1.0 which is an older release (and marks it as incompatible ? )