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-rw-r--r--guix/gnu-maintenance.scm15
1 files changed, 14 insertions, 1 deletions
diff --git a/guix/gnu-maintenance.scm b/guix/gnu-maintenance.scm
index cde31aaa7b..89a01741ec 100644
--- a/guix/gnu-maintenance.scm
+++ b/guix/gnu-maintenance.scm
@@ -56,7 +56,20 @@
(response-code resp)))
(case code
((200)
- data)
+ (if data
+ data
+ (begin
+ ;; XXX: Guile 2.0.5 and earlier did not support chunked transfer
+ ;; encoding, which is required when fetching %PACKAGE-LIST-URL
+ ;; (see <http://lists.gnu.org/archive/html/guile-devel/2011-09/msg00089.html>).
+ ;; Since users may still be using these versions, warn them and
+ ;; bail out.
+ (format (current-error-port)
+ "warning: using Guile ~a, which does not support HTTP ~s encoding~%"
+ (version)
+ (response-transfer-encoding resp))
+ (error "download failed; use a newer Guile"
+ uri resp))))
(else
(error "download failed:" uri code
(response-reason-phrase resp))))))