[bug#37928] [PATCH] import: crate: Fix licenses.

[Brice Waegeneire]

* guix/import/crate.scm (%dual-license-rx): Removed function.
(crate->guix-package): Handle most of the multi-licensing cases.
---
 guix/import/crate.scm | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)

diff --git a/guix/import/crate.scm b/guix/import/crate.scm
index 8dc014d232..e08028db15 100644
--- a/guix/import/crate.scm
+++ b/guix/import/crate.scm
@@ -178,21 +178,18 @@ and LICENSE."
          (close-port port)
          pkg))
 
-(define %dual-license-rx
-  ;; Dual licensing is represented by a string such as "MIT OR Apache-2.0".
-  ;; This regexp matches that.
-  (make-regexp "^(.*) OR (.*)$"))
-
 (define* (crate->guix-package crate-name #:optional version)
   "Fetch the metadata for CRATE-NAME from crates.io, and return the
 `package' s-expression corresponding to that package, or #f on failure.
 When VERSION is specified, attempt to fetch that version; otherwise fetch the
 latest version of CRATE-NAME."
   (define (string->license string)
-    (match (regexp-exec %dual-license-rx string)
-      (#f (list (spdx-string->license string)))
-      (m  (list (spdx-string->license (match:substring m 1))
-                (spdx-string->license (match:substring m 2))))))
+    (filter
+     (lambda (word)
+       (and (not (string-null? word))
+            (not (any (lambda (elem) (string=? elem word))
+                      '("AND" "OR" "WITH"))) ))
+     (string-split string (string->char-set " /"))))
 
   (define (normal-dependency? dependency)
     (eq? (crate-dependency-kind dependency) 'normal))
-- 
2.19.2