Go 模块替换命令不起作用

Question

I have following code structure for go module example (Go 1.14.2 on macOS)

BookingNexus

• go.mod
• main.go
• server.go

I added following dependency for server.go

package main
import bn "nurture.gitlab.com/Core/Contracs/BookingNexus/Gen/Go"

I added following code to go.mod

module nurture.gitlab.com/Core/BookingNexus

go 1.14

require (
    nurture.gitlab.com/Core/Contracts latest
)

replace nurture.gitlab.com/Core/Contracts latest => /Users/.../Core/Contracts

Since I don't have nurture.gitlab.com right now, so I used replace directive, howerver it's still trying to download from nurture.gitlab.com and saying that unable to dail tcp. Generating following error if I run go mod tidy

/Users/.../BookingNexus/go.mod:6: unrecognized import path "nurture.gitlab.com/Core/Contracts": https fetch: Get "https://nurture.gitlab.com/Core/Contracts?go-get=1": dial tcp: lookup nurture.gitlab.com: no such host

I expect replace command should provide alternative way to get the path, however it's still trying to download from unexistenet path and not considering replace directive at all (I tried including and excluding, got same message both times)

Can somebody help me why is this is the case?

Answer 1

If you want to build against your local copy of the package Contracts , you need to comment out the remote path:

require (
    //
    // comment this out during local development:
    //
    // nurture.gitlab.com/Core/Contracts latest
)

replace nurture.gitlab.com/Core/Contracts => /Users/.../Core/Contracts

Once the development is complete and checked into the remote location, then comment out the replace and restore the remote-path.

Some things of note from the golang wiki which apply to your case:

Note: if the right-hand side of a replace directive is a filesystem path, then the target must have a go.mod file at that location. If the go.mod file is not present, you can create one with go mod init.