Does it make sense to have two packages in the same directory?

Question

I have a project that provides a library (exports some funcs) and also must provide a command-line interface (there must be an executable file).

Example of directory

Answer 1

You can't have two golang files in one directory with two packages. So you need to move main.go out of myproject.

the directory structure before move

whatever.io/
    go.mod
    myproject/
        main.go
        myproject.go

After move

whatever.io/
    go.mod
    main.go
    myproject/
        myproject.go

And you need to change your main.go's import path. If the module name is aaa

Before

import "aaa"

Need change to this

import "aaa/myproject"