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-rw-r--r--guix/build/download.scm12
1 files changed, 12 insertions, 0 deletions
diff --git a/guix/build/download.scm b/guix/build/download.scm
index fe7a453c89..fec4cec3e8 100644
--- a/guix/build/download.scm
+++ b/guix/build/download.scm
@@ -42,6 +42,7 @@
current-terminal-columns
progress-proc
uri-abbreviation
+ nar-uri-abbreviation
store-path-abbreviation))
;;; Commentary:
@@ -222,6 +223,17 @@ abbreviation of URI showing the scheme, host, and basename of the file."
uri-as-string))
uri-as-string))
+(define (nar-uri-abbreviation uri)
+ "Abbreviate URI, which is assumed to be the URI of a nar as served by Hydra
+and 'guix publish', something like
+\"http://example.org/nar/1ldrllwbna0aw5z8kpci4fsvbd2w8cw4-texlive-bin-2015\"."
+ (let* ((uri (if (string? uri) (string->uri uri) uri))
+ (path (basename (uri-path uri))))
+ (if (and (> (string-length path) 33)
+ (char=? (string-ref path 32) #\-))
+ (string-drop path 33)
+ path)))
+
(define (ftp-fetch uri file)
"Fetch data from URI and write it to FILE. Return FILE on success."
(let* ((conn (ftp-open (uri-host uri)))