convertion of type tuple to enum

[drug via Digitalmars-d-learn]

What is the best way to do subj? I did
```
import std.array: array;
import std.typetuple: TypeTuple;
import std.typecons: tuple;
import std.traits: EnumMembers;
struct Foo {}
struct Bar {}
struct FooBar {}
struct Baz {}

string convertTypeTupleToEnum(Types...)()
{
        string s = "enum Kind { ";

        foreach(T; Types)
        {
                s ~= T.stringof ~ ", ";
        }
        s ~= "}";

        return s;
}

alias Types = TypeTuple!(Foo, Bar, FooBar, Baz);

void main()
{
        mixin(convertTypeTupleToEnum!(Types));

	assert(EnumMembers!Kind.tuple.array == [ Kind.Foo, Kind.Bar, 
Kind.FooBar, Kind.Baz]);
}
```
(also here http://dpaste.dzfl.pl/bc6f19770f85). Is there a way to do it 
without string mixin? Thanks!