How to get name of current package in go?

There is no runtime or reflect method or function that provides the functionality that you are looking for.

The closest thing I could find is:

package main

import (
    "azul3d.org/lmath.v1"
    "fmt"
    "reflect"
)

type Empty struct{}

func main() {
    fmt.Println(reflect.TypeOf(Empty{}).PkgPath())
    fmt.Println(reflect.TypeOf(lmath.Vec3{0, 0, 0}).PkgPath())
}

This would output:

main
azul3d.org/lmath.v1

You could also read the first line of the file and remove the “package” substring.
(Not sure if it’s the best idea)

package main

import (
    "bufio"
    "bytes"
    "fmt"
    "os"
)

func main() {
    file, err := os.Open("so.go")
    if err != nil {
        panic(err)
    }
    r := bufio.NewReader(file)
    line, _, err := r.ReadLine()
    if err != nil {
        panic(err)
    }
    packageName := bytes.TrimPrefix(line, []byte("package "))
    fmt.Println(string(packageName))
}