1) non-default derived settings, if they produce anything, the settings
they produce must supersede previous assignents (in the settings seq)
to the same key.
2) even if a derived setting is scoped at a higher scope (e.g.
ThisBuild) the settings it produces are scoped at the intersection of
that (the defining) scope and the scope of the triggering dependency.
2 is particularly nice as it enables this behaviour:
derive(b in ThisBuild := a.value + 1)
a in project1 := 0
// a could be defined in all projects
==>
Now (b in project1).value == (a in project1).value + 1 == 1
and similarly in all other projects
all with a single derived setting
1. KList[M[_]] now instead of KList[HL <: HList, M[_]]
a. head, tail work properly in this variant
b. disadvantage is that full type not easily transformed to new type constructor
2. AList abstracts on K[L[x]], a higher order type constructor.
A. Instances written for:
a. KList
b. Seq[M[T]] for a fixed T
c. TupleN
d. single values
e. operate on one type constructor when nested
B. Main disadvantage is type inference. It just doesn't happen for K[L[x]].
This is mitigated by AList being used internally and rarely needing to construct a K.
Moves many methods previously provided by implicit conversions directly onto the classes
for better discoverability, especially with scaladoc.
1. Initialize now allowed in more places. Minor renamings in Initialize to avoid conflicts
a. map -> apply
b. get -> evaluate
2. Identity on Scoped* is deprecated- it is now redundant
3. Can now use += and <+= for String, Int, Long, Double settings.
There may be some problematic corner cases in inference, especially with +=, ++, <+=, <++=
4. Some classes with a scoped: ScopedKey[T] method now have scopedKey: ScopedKey[T] instead.
5. The implicit conversion to ScopedKey[T] is now deprecated. Use the scopedKey method.
6. :== and ::= are now private[sbt] to better reflect that they were internal use only.
KList.map -> transform
can now drop trailing 'H' from multi-Task 'mapH'
compressed Action hierarchy by merging (Flat)Map{ped,All,Failure} into (Flat)Mapped
moved most information in Info into attributes: AttributeMap to allow future changes
Josh Suereth
Dan Sanduleac
Dan Sanduleac
Mark Harrah
Paolo G. Giarrusso
Eugene Vigdorchik