Does version satisfy the version-spec. A generic function.
ASDF provides built-in methods for version being a
version-spec should be a string.
If it’s a component, its version is extracted as a string before further processing.
A version string satisfies the version-spec if after parsing,
the former is no older than the latter.
"1.10" all satisfy
"1.9" do not.
For more information about how
version-satisfies parses and interprets
version strings and specifications,
see Version specifiers and
Common attributes of components.
Note that in versions of ASDF prior to 3.0.1,
including the entire ASDF 1 and ASDF 2 series,
version-satisfies would also require that the version and the version-spec
have the same major version number (the first integer in the list);
if the major version differed, the version would be considered as not matching the spec.
But that feature was not documented, therefore presumably not relied upon,
whereas it was a nuisance to several users.
Starting with ASDF 3.0.1,
version-satisfies does not treat the major version number specially,
and returns T simply if the first argument designates a version that isn’t older
than the one specified as a second argument.
If needs be, the
(:version ...) syntax for specifying dependencies
could be in the future extended to specify an exclusive upper bound for compatible versions
as well as an inclusive lower bound.