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authorLudovic Courtès <ludo@gnu.org>2017-04-05 15:19:15 +0200
committerLudovic Courtès <ludo@gnu.org>2017-04-05 22:45:41 +0200
commitf37f2b83fa95c1fe2bf01c4b8072cfc23d4c67ec (patch)
treebed6bac6a29ee4575fdbf34604bd380f0d5c2ff7 /tests/packages.scm
parent79f912c7106131f4179c727583d33500271361cd (diff)
downloadguix-f37f2b83fa95c1fe2bf01c4b8072cfc23d4c67ec.tar
guix-f37f2b83fa95c1fe2bf01c4b8072cfc23d4c67ec.tar.gz
packages: Add 'package-mapping' and base 'package-input-rewriting' on it.
* guix/packages.scm (package-mapping): New procedure. (package-input-rewriting): Rewrite in terms of 'package-mapping'. * tests/packages.scm ("package-mapping"): New test. * doc/guix.texi (Defining Packages): Document it.
Diffstat (limited to 'tests/packages.scm')
-rw-r--r--tests/packages.scm27
1 files changed, 27 insertions, 0 deletions
diff --git a/tests/packages.scm b/tests/packages.scm
index 51dc1ba2b0..930374dabf 100644
--- a/tests/packages.scm
+++ b/tests/packages.scm
@@ -886,6 +886,33 @@
(and (build-derivations %store (list drv))
(file-exists? (string-append out "/bin/make")))))))
+(test-equal "package-mapping"
+ 42
+ (let* ((dep (dummy-package "chbouib"
+ (native-inputs `(("x" ,grep)))))
+ (p0 (dummy-package "example"
+ (inputs `(("foo" ,coreutils)
+ ("bar" ,grep)
+ ("baz" ,dep)))))
+ (transform (lambda (p)
+ (package (inherit p) (source 42))))
+ (rewrite (package-mapping transform))
+ (p1 (rewrite p0)))
+ (and (eq? p1 (rewrite p0))
+ (eqv? 42 (package-source p1))
+ (match (package-inputs p1)
+ ((("foo" dep1) ("bar" dep2) ("baz" dep3))
+ (and (eq? dep1 (rewrite coreutils)) ;memoization
+ (eq? dep2 (rewrite grep))
+ (eq? dep3 (rewrite dep))
+ (eqv? 42
+ (package-source dep1) (package-source dep2)
+ (package-source dep3))
+ (match (package-native-inputs dep3)
+ ((("x" dep))
+ (and (eq? dep (rewrite grep))
+ (package-source dep))))))))))
+
(test-assert "package-input-rewriting"
(let* ((dep (dummy-package "chbouib"
(native-inputs `(("x" ,grep)))))