Why doesn't curry work with multiple arguments?

[Andrej Mitrovic]

Wow, talk about enlightement. I think I've done it now:

import std.stdio;
import std.traits;
import std.metastrings;

template count(T...)
{
    enum count = T.length;
}

template myCurry(alias fun, args...)
{
    static if (args.length > (ParameterTypeTuple!fun).length)
    {
        static assert(0, Format!("Tried to pass %s arguments, max is %s.",
                                 count!args, (ParameterTypeTuple!fun).length));
    }

    ReturnType!fun myCurry(T...)(T t)
    {
        return fun(args, t);
    }
}

void foo(string x, int y, int z)
{
    writeln(x, y, z);
}

alias myCurry!(foo, "bar")       oneCurry;
alias myCurry!(foo, "bar", 1)    twoCurry;
alias myCurry!(foo, "bar", 1, 2) threeCurry;

void main()
{
    oneCurry(1, 2);
    twoCurry(2);
    threeCurry();
}