derivations: Move grafts to (guix grafts).

* guix/derivations.scm (<graft>, graft-derivation, %graft?)
(set-grafting): Move to...
* guix/grafts.scm: ... here.  New file.
* guix/gexp.scm, guix/packages.scm, tests/packages.scm,
guix/scripts/build.scm: Use it.
* Makefile.am (MODULES): Add it.
(SCM_TESTS): Add tests/grafts.scm.
* tests/derivations.scm ("graft-derivation"): Move to...
* tests/grafts.scm: ... here.  New file.

1 files changed, 0 insertions, 34 deletions

diff --git a/tests/derivations.scm b/tests/derivations.scm
index db96e26ab1..9b53019cc5 100644
--- a/tests/derivations.scm
+++ b/tests/derivations.scm
@@ -929,40 +929,6 @@
                                     ((p2 . _)
                                      (string<? p1 p2)))))))))))))
 
-
-(test-assert "graft-derivation"
-  (let* ((build `(begin
-                   (mkdir %output)
-                   (chdir %output)
-                   (symlink %output "self")
-                   (call-with-output-file "text"
-                     (lambda (output)
-                       (format output "foo/~a/bar" ,%mkdir)))
-                   (symlink ,%bash "sh")))
-         (orig  (build-expression->derivation %store "graft" build
-                                              #:inputs `(("a" ,%bash)
-                                                         ("b" ,%mkdir))))
-         (one   (add-text-to-store %store "bash" "fake bash"))
-         (two   (build-expression->derivation %store "mkdir"
-                                              '(call-with-output-file %output
-                                                 (lambda (port)
-                                                   (display "fake mkdir" port)))))
-         (graft (graft-derivation %store "graft" orig
-                                  (list (graft
-                                          (origin %bash)
-                                          (replacement one))
-                                        (graft
-                                          (origin %mkdir)
-                                          (replacement two))))))
-    (and (build-derivations %store (list graft))
-         (let ((two   (derivation->output-path two))
-               (graft (derivation->output-path graft)))
-           (and (string=? (format #f "foo/~a/bar" two)
-                          (call-with-input-file (string-append graft "/text")
-                            get-string-all))
-                (string=? (readlink (string-append graft "/sh")) one)
-                (string=? (readlink (string-append graft "/self")) graft))))))
-
 (test-equal "map-derivation"
   "hello"
   (let* ((joke (package-derivation %store guile-1.8))