cmd/go: "go env -changed" never include GOTELEMETRY

[zigo101]

Go version

go version go1.23.0 linux/amd64

Output of go env in your module/workspace:

.

What did you do?

$ go env GOTELEMETRY
off

What did you see happen?

$ go env -changed
GOSUMDB='off'
GCCGO='/usr/bin/gccgo'

What did you expect to see?

$ go env -changed
GOSUMDB='off'
GOTELEMETRY=off
GCCGO='/usr/bin/gccgo'

[zigo101]

Maybe a little related to #68928

[gabyhelp]

Related Issues and Documentation

• cmd/go: GOTELEMETRY=off environment variable has no effect #68928 (closed)
• cmd/go: go env -changed prints changed values for variables in go.env #67542 (closed)
• Unknown go command variable GOTELEMETRY - how to disable telemetry? #67424 (closed)

_{(Emoji vote if this was helpful or unhelpful; more detailed feedback welcome in this discussion.)}

[seankhliao]

see https://go.googlesource.com/go/+/d36353499f673c89a267a489beb80133a14a75f9/src/cmd/go/testdata/script/telemetry.txt#48
GOTELEMETRY is not set through an env var or GOENV, so -changed doesn't report it.

[zigo101]

But why go env shows it?

see https://go.googlesource.com/go/+/d36353499f673c89a267a489beb80133a14a75f9/src/cmd/go/testdata/script/telemetry.txt#48

I don't know what can this prove? Please elaborate more.

[zigo101]

Please re-open this issue. If go env GOTELEMETRY works, then go env -changed should include GOTELEMETRY.

[ianlancetaylor]

At this point this seems the same as #68936.

[zigo101]

Continued at #68960 (comment)