CC @bcmills

when use go mod vendor some pkg didn't inside the vendor

I don't know what that means. Please provide explicit steps that we can follow exactly to reproduce the problem, ideally starting from an empty directory.

Note that go mod vendor “[includes] all packages needed to build and test all the main module's packages”, not all packages from the modules needed to build and test the main module. Packages that are not needed to build the main module are not vendored.

for example ,go.mod like (fake code)

module github.com/lizihuai/test

require (
golang.org/x/net v0.0.0-20180824152047-4bcd98cce591
google.golang.org/grpc v1.14.0
k8s.io/api v0.0.0-20180925152912-a191abe0b71e // indirect
k8s.io/apimachinery v0.0.0-20180823151430-017bf4f8f588
)

replace (
golang.org/x/crypto v0.0.0-20180820150726-614d502a4dac => github.com/golang/crypto v0.0.0-20180820150726-614d502a4dac
golang.org/x/net v0.0.0-20180824152047-4bcd98cce591 => github.com/golang/net v0.0.0-20180824152047-4bcd98cce591
golang.org/x/sys v0.0.0-20180824143301-4910a1d54f87 => github.com/golang/sys v0.0.0-20180824143301-4910a1d54f87
golang.org/x/text v0.3.0 => github.com/golang/text v0.3.0
golang.org/x/time v0.0.0-20180412165947-fbb02b2291d2 => github.com/golang/time v0.0.0-20180412165947-fbb02b2291d2
)

use go mod download be downloaded no matter what use requireor or replace but go mod vendor some pkg not inside " vendor" , like "golang.org/x/sys" (the project use all of the above packages)

Please provide explicit steps that we can follow exactly to reproduce the problem, ideally starting from an empty directory.

go mod vendor uses the import graph of the actual Go source files to decide what to copy. To diagnose the problem, we need at least enough of the source files to capture that import graph.

Note that go mod why -m -vendor can tell you whether or why a given module should be present in vendor.

I have a similar issue. Let say I have a go.mod like below, where I want to use my fork of go.etcd.io/etcd at gitlab.com

module gitlab.com/user/go-raft-kv

go 1.12

replace go.etcd.io/etcd => gitlab.com/user/etcd v0.0.0-20190418142634-07789e37997a

require (
	github.com/gogo/protobuf v1.2.1
	github.com/golang/protobuf v1.3.1 // indirect
	github.com/pkg/errors v0.8.1
	github.com/spf13/pflag v1.0.3
	go.etcd.io/etcd v3.3.12+incompatible
	golang.org/x/net v0.0.0-20190415214537-1da14a5a36f2
	google.golang.org/grpc v1.20.0
)

My main.go file imports "go.etcd.io/etcd/raft" and uses it. When I go mod vendor, go.etcd.io is downloaded into vendor and not 'gitlab.com/user/etcd'. Doesn't vendor respect replace?

My bad. It works, but uses the same module name as the original. That confused me. Sorry about that.

Timed out in state WaitingForInfo. Closing.

(I am just a bot, though. Please speak up if this is a mistake or you have the requested information.)