Template mixin can not introduce overloads

[SimonN via Digitalmars-d-learn]

> On Thursday, 25 June 2015 at 03:49:04 UTC, Tofu Ninja wrote:
> > Is this intended or is it a bug?

On Thursday, 25 June 2015 at 03:53:58 UTC, Adam D. Ruppe wrote:
> Intended, the mixin template works on the basis of names. This 
> The extra step is easy though: alias the name in:

I would like to to this with constructors instead of normal 
methods. I have tried to mix in a constructor as follows:

     #!/usr/bin/rdmd

     import std.stdio;

     mixin template MyConstructor() {
         this(int x, float y) { writefln("%d, %f", x, y); }
     }

     class Base {
         mixin MyConstructor my_ctor;
         this(string s) { writefln(s); }
         alias my_ctor this;
     }

     void main()
     {
         Base b = new Base(3, 4.5);
     }

$ ./mixinctor.d
./mixinctor.d(17): Error: constructor mixinctor.Base.this (string 
s) is not callable using argument types (int, double)
Failed: ["dmd", "-v", "-o-", "./mixinctor.d", "-I."]

Doing it with
     alias this = my_ctor;
errors out too, and demands me to use alias my_ctor this; as in 
the original code.

Can I get this to work at all? Or does alias this (for multiple 
subtyping) fundamentally clash here with alias my_ctor this?

-- Simon