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cmd/api: make non-importable #62069

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rsc opened this issue Aug 16, 2023 · 8 comments
Closed

cmd/api: make non-importable #62069

rsc opened this issue Aug 16, 2023 · 8 comments
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NeedsFix The path to resolution is known, but the work has not been done. release-blocker
Milestone
Go1.22

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@rsc
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rsc commented Aug 16, 2023

Oops.

% cat x.go
package main
import _ "cmd/api"
func main() {}
% GOTOOLCHAIN=go1.19 go build x.go
x.go:2:8: import "cmd/api" is a program, not an importable package
% GOTOOLCHAIN=go1.20 go build x.go
% GOTOOLCHAIN=go1.21.0 go build x.go
%
@rsc rsc added this to the Go1.22 milestone Aug 16, 2023
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rsc commented Aug 16, 2023

@gopherbot please backport

This was referenced Aug 16, 2023
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@gopherbot
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Backport issue(s) opened: #62070 (for 1.20), #62071 (for 1.21).

Remember to create the cherry-pick CL(s) as soon as the patch is submitted to master, according to https://go.dev/wiki/MinorReleases.

@dmitshur
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dmitshur commented Aug 16, 2023 •
edited

Relevant context: cmd/api was a command (i.e., package main) in Go 1.19 and older, and became a package (i.e., package api) in Go 1.20 and later in CL 453258.

@rsc
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rsc commented Aug 16, 2023

That's a relief. That's a much smaller mistake. Will fix by moving cmd/api to cmd/internal/api.

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rsc commented Aug 16, 2023

Actually I can just rename the one non-test file.

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Change https://go.dev/cl/520038 mentions this issue: cmd/api: rename api.go to main_test.go

@rsc rsc changed the title cmd/go: import of main package not diagnosed cmd/api: make non-importable Aug 16, 2023
@bcmills bcmills added the NeedsFix The path to resolution is known, but the work has not been done. label Aug 16, 2023
@gopherbot
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Change https://go.dev/cl/520060 mentions this issue: [release-branch.go1.20] cmd/api: rename api.go to main_test.go

@gopherbot
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Change https://go.dev/cl/520061 mentions this issue: [release-branch.go1.21] cmd/api: rename api.go to main_test.go

gopherbot pushed a commit that referenced this issue Aug 17, 2023
@rsc
[release-branch.go1.21] cmd/api: rename api.go to main_test.go
ed527ec 
This makes cmd/api no longer an importable package.
In CL 453258 I forgot that there was no direct prohibition
on importing packages from cmd - we just rely on the
fact that cmd/* is all package main and everything else
is cmd/internal.

Fixes #62069.
Fixes #62071.

Change-Id: Ifed738d333b40663f85eca8f83025fcea5df89a9
Reviewed-on: https://go-review.googlesource.com/c/go/+/520038
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-on: https://go-review.googlesource.com/c/go/+/520061
gopherbot pushed a commit that referenced this issue Aug 17, 2023
@rsc @gopherbot
[release-branch.go1.20] cmd/api: rename api.go to main_test.go
14e3c73 
This makes cmd/api no longer an importable package.
In CL 453258 I forgot that there was no direct prohibition
on importing packages from cmd - we just rely on the
fact that cmd/* is all package main and everything else
is cmd/internal.

Fixes #62069.
Fixes #62070.

Change-Id: Ifed738d333b40663f85eca8f83025fcea5df89a9
Reviewed-on: https://go-review.googlesource.com/c/go/+/520038
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-on: https://go-review.googlesource.com/c/go/+/520060
Auto-Submit: Dmitri Shuralyov <dmitshur@google.com>
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