go mod: cannot find module providing package

I am creating a go project with version 1.12.1. If I run GOPATH="$(pwd)/vendor:$(pwd)" GOBIN="$(pwd)/bin" go clean I get the following error:

can't load package: package unknown import path "": cannot find module providing package 

This is only for go clean, go run or go build works fine.

Here is the folder structure of main code:

. ├── Makefile ├── cmd │ └── server │ └── main.go ├── go.mod ├── go.sum └── pkg └── storage └── mysql └── storage.go 

Here is how the go.mod file looks like:

module go 1.12 require ( v1.4.1 ) 

And finally the main.go file:

package main import ( "fmt" "os" "" ) func main() { if err := run(); err != nil { fmt.Fprintf(os.Stderr, "%v", err) os.Exit(1) } } func run() error { // init storage s := mysql.NewStorage() // do some other stuff... } 

Any ideas what I am doing wrong?

3 Answers

I generally use go get and go mod tidy for same. It works all the time.

go mod tidy 

Normally this new project approach works for me:

go mod init <project_name> go test 

I have found that developing projects outside of GOROOT and GOPATH are much easier

Go build/install is trying to find main package in your root directory, it is not checking sub-directories (cmd/server) in your case. Hence you are getting package not found error.

To properly build your code, you can run:

go build 

Similarly, to run your project, you will have to provide module-name/main-package-path:

go run 

Go clean can be executed in same way, by providing module-name/path-with-main-package

go clean 

or

GOPATH="$(pwd)/vendor:$(pwd)" GOBIN="$(pwd)/bin" go clean 

However, as per , just put your source files into your project’s root. It’s better that way.