cmd/go: go1.22 toolchain not available

[FiloSottile]

Go version

go version go1.21.5 darwin/arm64

Output of go env in your module/workspace:

GO111MODULE=''
GOARCH='arm64'
GOBIN=''
GOCACHE='/Users/filippo/Library/Caches/go-build'
GOENV='/Users/filippo/Library/Application Support/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFLAGS=''
GOHOSTARCH='arm64'
GOHOSTOS='darwin'
GOINSECURE=''
GOMODCACHE='/Users/filippo/pkg/mod'
GONOPROXY='github.com/FiloSottile/*,filippo.io/*'
GONOSUMDB=''
GOOS='darwin'
GOPATH='/Users/filippo'
GOPRIVATE=''
GOPROXY='https://proxy.golang.org'
GOROOT='/opt/homebrew/Cellar/go/1.21.5/libexec'
GOSUMDB='sum.golang.org'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/opt/homebrew/Cellar/go/1.21.5/libexec/pkg/tool/darwin_arm64'
GOVCS=''
GOVERSION='go1.21.5'
GCCGO='gccgo'
AR='ar'
CC='cc'
CXX='c++'
CGO_ENABLED='1'
GOMOD='/dev/null'
GOWORK=''
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
PKG_CONFIG='pkg-config'
GOGCCFLAGS='-fPIC -arch arm64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -ffile-prefix-map=/var/folders/_j/hq4ytn1n4b94fhrpvvb9tktr0000gn/T/go-build2730947195=/tmp/go-build -gno-record-gcc-switches -fno-common'

What did you do?

Updated my go.mod go line to go1.22 and ran go test.

What did you see happen?

go: downloading go1.22 (darwin/arm64)
go: download go1.22 for darwin/arm64: toolchain not available

What did you expect to see?

Go 1.22.0 being downloaded.

I know go1.22 is not a toolchain now that we renamed that to go1.22.0, but when I set the go line I am not thinking primarily of toolchain versions, but of the Go 1.22 semantics, and I am happy for the latest version of Go 1.22 to be downloaded.

Looks like there's been a lot of confusion around this in the past dependabot/dependabot-core#7895 and some projects disabled auto toolchains to support go.mod files with "short" go versions.

If the behavior shouldn't be changed, at least the error can be more useful, suggesting changing the go line to include a patch version.

[seankhliao]

Duplicate of #62278

see in particular #62278 (comment)

[alessandroargentieri]

the provided solutions haven't worked for me. Besides that, I'm in my terminal, outside a go project and outside VSCode