From 343dc11702bf71876795b5d158cad860deca53a1 Mon Sep 17 00:00:00 2001
From: Ludovic Courtès <ludo@gnu.org>
Date: Fri, 28 Oct 2016 21:28:18 +0200
Subject: guix hash: Interpret '-' as standard input.

* guix/scripts/hash.scm (guix-hash)[file-hash]: Special-case "-".
* tests/guix-hash.sh: Add test.
* doc/guix.texi (Invoking guix hash): Document it.
---
 guix/scripts/hash.scm | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'guix')

diff --git a/guix/scripts/hash.scm b/guix/scripts/hash.scm
index b269ead50f..a339a8556b 100644
--- a/guix/scripts/hash.scm
+++ b/guix/scripts/hash.scm
@@ -139,7 +139,9 @@ and 'hexadecimal' can be used as well).\n"))
               (write-file file port #:select? select?)
               (force-output port)
               (get-hash))
-            (call-with-input-file file port-sha256))))
+            (match file
+              ("-" (port-sha256 (current-input-port)))
+              (_   (call-with-input-file file port-sha256))))))
 
     (match args
       ((file)
-- 
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