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06/10: lint: 'source' check no longer complains about unavailable mirror

From: guix-commits
Subject: 06/10: lint: 'source' check no longer complains about unavailable mirrors.
Date: Fri, 19 Jul 2019 19:32:31 -0400 (EDT)

civodul pushed a commit to branch master
in repository guix.

commit 848ae71ea7131e78a7b728863eac1056c33b2679
Author: Ludovic Court├Ęs <address@hidden>
Date:   Sat Jul 20 01:13:46 2019 +0200

    lint: 'source' check no longer complains about unavailable mirrors.
    Fixes a regression introduced in
    Previously, 'guix lint -c source coreutils' would complain if one of the
    mirrors was unavailable.  This is no longer the case.
    * guix/lint.scm (check-source)[warnings-for-uris]: Use 'filter-map'.
    Remove 'append-map' call.
    Use 'append-map' here so that we can meaningfull compare the length or
    URIS and that of WARNINGS.
    Use '=' to compare lengths.
 guix/lint.scm | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/guix/lint.scm b/guix/lint.scm
index 2542a81..12031c8 100644
--- a/guix/lint.scm
+++ b/guix/lint.scm
@@ -742,21 +742,21 @@ descriptions maintained upstream."
   "Emit a warning if PACKAGE has an invalid 'source' field, or if that
 'source' is not reachable."
   (define (warnings-for-uris uris)
-    (filter lint-warning?
-            (map
-             (lambda (uri)
-               (validate-uri uri package 'source))
-             (append-map (cut maybe-expand-mirrors <> %mirrors)
-                         uris))))
+    (filter-map (lambda (uri)
+                  (match (validate-uri uri package 'source)
+                    (#t #f)
+                    ((? lint-warning? warning) warning)))
+                uris))
   (let ((origin (package-source package)))
     (if (and origin
              (eqv? (origin-method origin) url-fetch))
-        (let* ((uris (map string->uri (origin-uris origin)))
+        (let* ((uris     (append-map (cut maybe-expand-mirrors <> %mirrors)
+                                     (map string->uri (origin-uris origin))))
                (warnings (warnings-for-uris uris)))
           ;; Just make sure that at least one of the URIs is valid.
-          (if (eq? (length uris) (length warnings))
+          (if (= (length uris) (length warnings))
               ;; When everything fails, report all of WARNINGS, otherwise don't
               ;; report anything.

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