From e38d90d497e19e00263fa28961c688a433154386 Mon Sep 17 00:00:00 2001
From: Ludovic Courtès <ludovic.courtes@inria.fr>
Date: Mon, 21 Dec 2020 14:52:38 +0100
Subject: transformations: Add '--with-patch'.

Suggested by Philippe Swartvagher <philippe.swartvagher@inria.fr>.

* guix/transformations.scm (transform-package-patches): New procedure.
(%transformations): Add it as 'with-patch'.
(%transformation-options, show-transformation-options-help/detailed):
Add '--with-patch'.
* tests/transformations.scm ("options->transformation, with-patch"): New
test.
* doc/guix.texi (Package Transformation Options): Document it.
---
 tests/transformations.scm | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

(limited to 'tests/transformations.scm')

diff --git a/tests/transformations.scm b/tests/transformations.scm
index 2d33bed7ae..9053deba41 100644
--- a/tests/transformations.scm
+++ b/tests/transformations.scm
@@ -26,6 +26,7 @@
   #:use-module (guix build-system)
   #:use-module (guix build-system gnu)
   #:use-module (guix transformations)
+  #:use-module ((guix gexp) #:select (local-file? local-file-file))
   #:use-module (guix ui)
   #:use-module (guix utils)
   #:use-module (guix git)
@@ -372,6 +373,29 @@
               (match (memq #:tests? (package-arguments tar))
                 ((#:tests? #f _ ...) #t))))))))
 
+(test-equal "options->transformation, with-patch"
+  (search-patches "glibc-locales.patch" "guile-relocatable.patch")
+  (let* ((dep    (dummy-package "dep"
+                   (source (dummy-origin))))
+         (p      (dummy-package "foo"
+                   (inputs `(("dep" ,dep)))))
+         (patch1 (search-patch "glibc-locales.patch"))
+         (patch2 (search-patch "guile-relocatable.patch"))
+         (t      (options->transformation
+                  `((with-patch . ,(string-append "dep=" patch1))
+                    (with-patch . ,(string-append "dep=" patch2))
+                    (with-patch . ,(string-append "tar=" patch1))))))
+    (let ((new (t p)))
+      (match (bag-direct-inputs (package->bag new))
+        ((("dep" dep) ("tar" tar) _ ...)
+         (and (member patch1
+                      (filter-map (lambda (patch)
+                                    (and (local-file? patch)
+                                         (local-file-file patch)))
+                                  (origin-patches (package-source tar))))
+              (map local-file-file
+                   (origin-patches (package-source dep)))))))))
+
 (test-end)
 
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