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cmd/go: print deprecation notice for 'go get cmd'

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The notice is shown when 'go get' is invoked with the -d flag, and
the arguments match at least one main package.

This reverts CL 274552.

For #43684

Change-Id: I42e6731455f22988bf72dde1d5a76d197e9e3954
Reviewed-on: https://go-review.googlesource.com/c/go/+/305670
Trust: Jay Conrod <jayconrod@google.com>
Run-TryBot: Jay Conrod <jayconrod@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
This commit is contained in:
Jay Conrod 2021-03-29 17:00:15 -04:00
parent d5b9dc1317
commit 254fb85c12
2 changed files with 47 additions and 3 deletions
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28
src/cmd/go/internal/modget/get.go
View File

@ -385,10 +385,32 @@ func runGet(ctx context.Context, cmd *base.Command, args []string) {
pkgs = append(pkgs, pkg)
}
load.CheckPackageErrors(pkgs)
haveExe := false
for _, pkg := range pkgs {
if pkg.Name == "main" {
haveExe = true
break
}
}
if haveExe {
fmt.Fprint(os.Stderr, "go get: installing executables with 'go get' in module mode is deprecated.")
var altMsg string
if modload.HasModRoot() {
altMsg = `
To adjust and download dependencies of the current module, use 'go get -d'.
To install using requirements of the current module, use 'go install'.
To install ignoring the current module, use 'go install' with a version,
like 'go install example.com/cmd@latest'.
`
} else {
altMsg = "\n\tUse 'go install pkg@version' instead.\n"
}
fmt.Fprint(os.Stderr, altMsg)
fmt.Fprintf(os.Stderr, "\tFor more information, see https://golang.org/doc/go-get-install-deprecation\n\tor run 'go help get' or 'go help install'.\n")
}
work.InstallPackages(ctx, pkgPatterns, pkgs)
// TODO(#40276): After Go 1.16, print a deprecation notice when building and
// installing main packages. 'go install pkg' or 'go install pkg@version'
// should be used instead. Give the specific argument to use if possible.
}
if !modload.HasModRoot() {

22
src/cmd/go/testdata/script/mod_get_deprecate_install.txt vendored Normal file
View File

@ -0,0 +1,22 @@
[short] skip
env GO111MODULE=on
# 'go get' outside a module with an executable prints a deprecation message.
go get example.com/cmd/a
stderr '^go get: installing executables with ''go get'' in module mode is deprecated.$'
stderr 'Use ''go install pkg@version'' instead.'
go mod init m
# 'go get' inside a module with a non-main package does not print a message.
# This will stop building in the future, but it's the command we want to use.
go get rsc.io/quote
! stderr deprecated
# 'go get' inside a module with an executable prints a different
# deprecation message.
go get example.com/cmd/a
stderr '^go get: installing executables with ''go get'' in module mode is deprecated.$'
stderr 'To adjust and download dependencies of the current module, use ''go get -d'''