From 5e2495d09e5ad78f8ebb6bfa6fb4ff09fb305ec4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ludovic=20Court=C3=A8s?= <ludo@gnu.org>
Date: Fri, 16 Feb 2018 11:06:31 +0100
Subject: [PATCH] import: utils: 'alist->package' allows false license.

Reported by <pkill9@runbox.com>.
Fixes <https://bugs.gnu.org/30470>.

* guix/import/utils.scm (alist->package): Check whether 'license' is
false and set the 'license' field to #f in this case.
* tests/import-utils.scm ("alist->package with false license"): New
test.
---
 guix/import/utils.scm  | 12 +++++++-----
 tests/import-utils.scm | 19 +++++++++++++++++++
 2 files changed, 26 insertions(+), 5 deletions(-)

diff --git a/guix/import/utils.scm b/guix/import/utils.scm
index d4cef6b503..efc6169077 100644
--- a/guix/import/utils.scm
+++ b/guix/import/utils.scm
@@ -1,5 +1,5 @@
 ;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2012, 2013 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2012, 2013, 2018 Ludovic Courtès <ludo@gnu.org>
 ;;; Copyright © 2016 Jelle Licht <jlicht@fsfe.org>
 ;;; Copyright © 2016 David Craven <david@craven.ch>
 ;;; Copyright © 2017 Ricardo Wurmus <rekado@elephly.net>
@@ -330,10 +330,12 @@ the expected fields of an <origin> object."
     (description
      (assoc-ref meta "description"))
     (license
-     (let ((l (assoc-ref meta "license")))
-       (or (module-ref (resolve-interface '(guix licenses) #:prefix 'license:)
-                       (spdx-string->license l))
-           (license:fsdg-compatible l))))))
+     (match (assoc-ref meta "license")
+       (#f #f)
+       (l
+        (or (module-ref (resolve-interface '(guix licenses) #:prefix 'license:)
+                        (spdx-string->license l))
+            (license:fsdg-compatible l)))))))
 
 (define* (read-lines #:optional (port (current-input-port)))
   "Read lines from PORT and return them as a list."
diff --git a/tests/import-utils.scm b/tests/import-utils.scm
index f4bbd335b9..5c0c041360 100644
--- a/tests/import-utils.scm
+++ b/tests/import-utils.scm
@@ -79,4 +79,23 @@
          (equal? (origin-sha256 (package-source pkg))
                  (base32 "0ssi1wpaf7plaswqqjwigppsg5fyh99vdlb9kzl7c9lng89ndq1i")))))
 
+(test-equal "alist->package with false license"  ;<https://bugs.gnu.org/30470>
+  'license-is-false
+  (let* ((meta '(("name" . "hello")
+                 ("version" . "2.10")
+                 ("source" . (("method" . "url-fetch")
+                              ("uri"    . "mirror://gnu/hello/hello-2.10.tar.gz")
+                              ("sha256" .
+                               (("base32" .
+                                 "0ssi1wpaf7plaswqqjwigppsg5fyh99vdlb9kzl7c9lng89ndq1i")))))
+                 ("build-system" . "gnu")
+                 ("home-page" . "https://gnu.org")
+                 ("synopsis" . "Say hi")
+                 ("description" . "This package says hi.")
+                 ("license" . #f))))
+    ;; Note: Use 'or' because comparing with #f otherwise succeeds when
+    ;; there's an exception instead of an actual #f.
+    (or (package-license (alist->package meta))
+        'license-is-false)))
+
 (test-end "import-utils")