golang/go

cmd/go: "go env" returns default value for GOPATH/GOSUMDB/GOPROXY, but not for GOBIN/GO111MODULE/GOTMPDIR

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#42,823 opened on Nov 25, 2020

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Description

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

What did you do?

$ go env GOPROXY
https://proxy.golang.org,direct
$ go env GOSUMDB
sum.golang.org
$ go env GOPATH
/home/d630/go
$ go env GOBIN

$ go env GO111MODULE

$ go env GOTMPDIR

$

None of these envs are set specifically.

What did you expect to see?

I expect go env GOBIN to be evaluated as <gopath>/bin in a shell script.

What did you see instead?

go env GOBIN is evaluated as blank.

Contributor guide

Research direction
Examine the 'go env' implementation in cmd/go/internal/envcmd to understand why GOPATH, GOSUMDB, GOPROXY return defaults while GOBIN, GO111MODULE, GOTMPDIR do not. Trace the code that determines whether to print a default value or blank.
Tech stack
go
Domain
backend
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Go
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70