branch wip-gexp-grafts created (now 0602d92)

[Ludovic Courtès]

civodul pushed a change to branch wip-gexp-grafts
in repository guix.

        at  0602d92   DRAFT gexp: Turn grafting into a build continuation.

This branch includes the following new commits:

       new  2c13d74   packages: Factorize computation of the replacement graft.
       new  ea7b5a8   gexp: Compilers can now provide a procedure returning 
applicable grafts.
       new  c490a0b   DRAFT store: Add support for build continuations.
       new  0c8491c   Callers of 'build-derivations' & co. now honor its result.
       new  ca9050d   ui: Remove 'show-derivation-outputs'.
       new  0602d92   DRAFT gexp: Turn grafting into a build continuation.

The 6 revisions listed above as "new" are entirely new to this
repository and will be described in separate emails.  The revisions
listed as "adds" were already present in the repository and have only
been added to this reference.