can not use go mod with v4.1.0

[romapres2010]

I have a problem use go mod with v4.1.0.

First I try go mod tidy.
But got only v3.0.0
go: extracting github.com/ibm-messaging/mq-golang v3.0.0+incompatible

Then I edit go mod an replace
github.com/ibm-messaging/mq-golang v3.0.0+incompatible
to
github.com/ibm-messaging/mq-golang/v4 v4.1.0+incompatible

And try go mod tidy again
I got an error
go: github.com/ibm-messaging/mq-golang/[email protected]+incompatible: go.mod has non-.../v4 module path "github.com/ibm-messaging/mq-golang" (and .../v4/go.mod does not exist) at revision v4.1.0

[ibmmqmet]

The whole area of Go modules when the tagged version is already greater than 2.0.0 seems problematic. See for example golang/go#25967 (comment) , golang/go#34217 or golang/go#31543

In particular, it seems that adding the new module capabilities are now considered a breaking change because of changes to the import path and would therefore require a new major number for this repository.

I think the best thing to do right now is ignore the module option until

• the Go tooling has been improved and stabilised (some things appear to be suggested for Go 14)
• older versions of Go that don't understand modules are old enough that they are not in general use
• there are other API changes that could deserve a major semver change

[romapres2010]

I can not ignore module, but I have found workaround.

go get github.com/ibm-messaging/mq-golang/ibmmq@19b946c

After that in in .mod file appeared
github.com/ibm-messaging/mq-golang v1.0.1-0.20190820103725-19b946c185a8

For now that is works well for me.