From 1d008d9f8c44dfdb808235d451b72f255e72f103 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ludovic=20Court=C3=A8s?= <ludo@gnu.org>
Date: Tue, 12 Dec 2017 18:09:53 +0100
Subject: [PATCH] derivations: 'derivation-hash' assumes inputs are coalesced.

* guix/derivations.scm (derivation-hash): Remove
redundant 'coalesce-duplicate-inputs' call.
---
 guix/derivations.scm | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/guix/derivations.scm b/guix/derivations.scm
index b95849727b..f842d26be8 100644
--- a/guix/derivations.scm
+++ b/guix/derivations.scm
@@ -658,8 +658,11 @@ (define derivation-hash            ; `hashDerivationModulo' in derivations.cc
                                 (make-derivation-input hash sub-drvs))))
                            inputs))
               (drv    (make-derivation outputs
-                                       (sort (coalesce-duplicate-inputs inputs)
-                                             derivation-input<?)
+
+                                       ;; Note: INPUTS is already the result
+                                       ;; of 'coalesce-duplicate-inputs'.
+                                       (sort inputs derivation-input<?)
+
                                        sources
                                        system builder args env-vars
                                        #f)))