Setting predicate for std::list::sort().

How can I use my own custom comparison function with
std::list::sort()? The only call to sort() I see does not take a
predicate argument.

Specifically, I have:

list<pair<double,MyType> > ...;

And I want to sort only on the value of the first member in that pair.
My solution right now is to not use a pair; doing something like this
instead:

struct A {
  double d;
  MyType t;
  bool operator < (const A &a) const {
    return d < a.d;
  }
};

list<A> ...;

But I am wondering how to do it in general.

Thanks,
Jason