Subject: bug#26373: [PATCH 6/6] import cran: Skip updating when meta data cannot be downloaded.

From: Ricardo Wurmus <[email-masked]>
Date: Wed, 5 Apr 2017 18:42:10 +0200

* gnu/packages/bioinformatics.scm (latest-cran-release,
latest-bioconductor-release): Abort early when meta data cannot be downloaded.
---
 guix/import/cran.scm | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/guix/import/cran.scm b/guix/import/cran.scm
index 557d694ad..fc7a1ed84 100644
--- a/guix/import/cran.scm
+++ b/guix/import/cran.scm
@@ -398,7 +398,8 @@ dependencies."
     (package->upstream-name package))
 
   (define meta
-    (fetch-description 'cran upstream-name))
+    (false-if-exception
+     (fetch-description 'cran upstream-name)))
 
   (and meta
        (let ((version (assoc-ref meta "Version")))
@@ -415,7 +416,8 @@ dependencies."
     (package->upstream-name package))
 
   (define meta
-    (fetch-description 'bioconductor upstream-name))
+    (false-if-exception
+     (fetch-description 'bioconductor upstream-name)))
 
   (and meta
        (let ((version (assoc-ref meta "Version")))
-- 
2.12.2