derivedRange if a source declared one, else the resolvedVersion the exports were read from.
StaticfromBuilds a package from a raw NAMESPACE body and its list of callable exports.
StaticfunctionStaticparseOptionalconstraint: stringOptionalversion: stringOptionalclassName: stringWhether some concrete version can satisfy every recorded constraint at once.
A package as the sources describe it, accumulated with addInfo/mergeInPlace: only those may change it, everything else reads. Its three version views run from the rawest to the most concrete:
inferredRangeon the dependencies context for the range that is only handed out once it is).