Golang cannot import a forked repository

Question

I'm extending an existing database driver (https://github.com/MonetDB/MonetDB-Go).

I use the github url as an import in my main.go, and in the go.mod:

replace github.com/fajran/go-monetdb@latest => github.com/MonetDB/MonetDB-Go v1.0.0

Yet when I try to go get/go install/go run it, it says:

main.go:7:2: no required module provides package github.com/MonetDB/MonetDB-Go; to add it:
    go get github.com/MonetDB/MonetDB-Go

Am I doing something wrong, or is it because it's a fork?

In general you **cannot** get a "Github fork" of a Go package to compile and run properly. Only trivial cases work (by using replace). — Volker, May 03 '21 at 11:55
You're changed the module name to your fork, the old package was not part of a module, and there is only one package within the module. What are you trying to do with `replace` here? You should be able to just import `github.com/MonetDB/MonetDB-Go/src` — JimB, May 03 '21 at 14:30

score 1 · Accepted Answer · answered May 03 '21 at 14:32

You don't need to replace anything, since you already import github.com/MonetDB/MonetDB-Go.

Your error comes from the fact that the source code in github.com/MonetDB/MonetDB-Go is under the src directory.

Final go.mod file:

module example

go 1.16

require github.com/MonetDB/MonetDB-Go v1.0.0

Final main.go:

package main

import (
    "fmt"
    "github.com/MonetDB/MonetDB-Go/src"
)

func main() {
    fmt.Println(monetdb.MAPI_STATE_INIT) // prints 0
}

1 Answers1