Hi @rchl
We have recently removed the makefile target in favour of the building workflow available natively in Go.
What I believe is happening there is that your goenv doesn’t have definition for installing that “later” version of Go. AFAIK Go 1.14 can still receive patches and these patches still need to make their way into goenv somehow.
We may at some point switch to 1.15, but until then may I suggest you try to upgrade your goenv?
I have figured it out in the end. Using different Go version was not an issue. It’s just that the building documentation is outdated and I had to instead do go install and go build, I believe.