stdout '^example.com/b v0.3.0 '
stdout '^example.com/c v0.2.0 '

go get example.com/c@v0.1.0 example.com/b@v0.1.0
go list -m all
stdout '^example.com/a v0.1.0 '
stdout '^example.com/b v0.1.0 '
stdout '^example.com/c v0.1.0 '

go mod tidy
go list -m all
stdout '^example.com/a v0.1.0 '
stdout '^example.com/b v0.1.0 '
! stdout '^example.com/c '

go get example.com/c@none
go list -m all

cp go.mod.orig go.mod
go get example.com/join/subpkg
go list -m example.com/join/...
! stdout 'example.com/join/subpkg'
stdout 'example.com/join v1.1.0'

# If @v/list includes a version that the proxy does not actually serve,
# that version is treated as nonexistent.
env GOPROXY=file:///$WORK/notfound
cp go.mod.orig go.mod
go get example.com/join/subpkg
go list -m example.com/join/...
! stdout 'example.com/join/subpkg'

! go get example.net/a@patch
stderr '^go: example.net/a@patch \(v0.1.1\) indirectly requires example.net/a@v0.2.0, not example.net/a@patch \(v0.1.1\)$'  # TODO: A mention of b v0.1.0 would be nice.

-- go.mod --
module example

go 1.16

require example.net/a v0.1.0

replace (
	example.net/a v0.1.0 => ./a10
	example.net/a v0.1.1 => ./a11
	example.net/a v0.2.0 => ./a20

go get -u patch.example.com/direct@patch
go list -m all
stdout '^patch.example.com/direct v1.0.1'
stdout '^patch.example.com/indirect v1.1.0'
stdout '^patch.example.com/depofdirectpatch v1.0.0'

# An explicit @latest should override a general -u=patch.
cp go.mod.orig go.mod
go get -u=patch patch.example.com/direct@latest
go list -m all
stdout '^patch.example.com/direct v1.1.0'
stdout '^patch.example.com/indirect v1.0.1'

[exec:patch] ! exists go.sum

-- go.mod --
module example.com/m

go 1.17

replace (
	example.net/added v0.1.0 => ./a1
	example.net/added v0.2.0 => ./a2
	example.net/added v0.3.0 => ./a1
	example.net/lazy v0.1.0 => ./lazy
	example.net/pruned v0.1.0 => ./pruned
)

require (
	example.net/added v0.1.0
	example.net/lazy v0.1.0
)
-- go.mod.tidy --
module example.com/m

go 1.17

replace (

exists $GOPATH/pkg/mod/cache/download/example.com/retract/missingmod/@v/v1.9.0.info
! exists $GOPATH/pkg/mod/cache/download/example.com/retract/missingmod/@v/v1.9.0.mod

# 'go list -m -retracted mod@version' shows retractions.
go list -m -retracted example.com/retract@v1.0.0-unused
stdout '^example.com/retract v1.0.0-unused \(retracted\)$'
go list -m -retracted -f '{{with .Retracted}}retracted{{end}}' example.com/retract@v1.0.0-unused
stdout retracted

cmp go.mod go.mod.orig

-- go.mod --
module example

go 1.21

require (
	example.net/a v0.1.0
	example.net/b v0.1.0
)

require example.net/outer/inner v0.1.0 // indirect

replace (
	example.net/a v0.1.0 => ./a
	example.net/b v0.1.0 => ./b
	example.net/outer v0.1.0 => ./outer
	example.net/outer/inner v0.1.0 => ./inner
)
-- example.go --
package example

import (
	_ "example.net/a"

go get example.net/ambiguous/nested/pkg@v0.1.0 example.net/ambiguous/nested@none
go list -m all
! stdout '^example.net/ambiguous/nested '
stdout '^example.net/ambiguous v0.1.0$'


# The user should also be able to fix it by *downgrading* the conflicting module
# away.

cp go.mod.orig go.mod
go mod edit -require=example.net/ambiguous@v0.1.0

go get example.net/c@v0.1.0

-- go.mod --
module example

go 1.19

require (
	example.net/a v0.1.0
	example.net/b v0.1.0
)

replace (
	example.net/a v0.1.0 => ./a1
	example.net/a v0.2.0 => ./a2
	example.net/b v0.1.0 => ./b1
	example.net/b v0.2.0 => ./b2
	example.net/c v0.1.0 => ./c1
)
-- a1/go.mod --
module example.net/a

go 1.19
-- a2/go.mod --

go 1.17

require example.com/a v0.1.0

require example.com/b v0.1.0 // indirect

replace (
	example.com/a v0.1.0 => ./a
	example.com/b v0.1.0 => ./b
	example.com/c v0.1.0 => ./c1
	example.com/c v0.2.0 => ./c2
)
-- go.mod.new --
module example.com/lazy

go 1.17

require example.com/a v0.1.0

require (
	example.com/b v0.1.0 // indirect
	example.com/c v0.1.0 // indirect
)

replace (