I would suggest if you do this, we might want to offer some syntactic means to get the old behavior.

Certainly there are cases where a library supplier may change the API in ways that mean "any version from 2 on" will be the wrong thing and what is wanted really is "version 2, not version 1, and not version 3." There have definitely been cases where upgrading a library will break dependent systems: I don't think we should have a build system that can't deal with that case.
Best,
R

"Faré" <fahree@gmail.com> wrote:
Looking at packages in quicklisp, it appears that no one explicitly
calls version-satisfies and really relies on the fact that it isn't
the same as version<= (actually, several packages, all written by me,
go through some pains to emulate version<= in spite of only
version-satisfies being available in asdf 2).

On the other hand, 41 different .asd files rely on (:version ...)
constrained dependencies, and may or may not expect a different major
version to be considered as incompatible.

So, is anyone going to complain if I do as Xach suggests and have
version-satisfies be an alias for version<= ?

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On Thu, May 16, 2013 at 2:03 PM, Faré <fahree@gmail.com> wrote:
What about making version-satisfies return t?

I could do (and implemented that as version<=), but
that would violate the previous contract.
Not that I am aware of anyone relying on the previous contract.

What do people here think is the right thing?

—♯ƒ • François-René ÐVB Rideau •Reflection&Cybernethics• http://fare.tunes.org
One of the greatest discoveries a man makes, one of his great surprises,
is to find he can do what he was afraid he couldn't do. � � Henry Ford


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