From 3d0fbd3c2f92cee74fd443eb5c252b8dd9b75b43 Mon Sep 17 00:00:00 2001
From: Leo Famulari <leo@famulari.name>
Date: Mon, 31 Jul 2017 18:56:44 -0400
Subject: gnu: libgit2: Enable SHA-1 collision detection.

* gnu/packages/version-control.scm (libgit2)[arguments]: Enable '-DUSE_SHA1DC'
in #:configure-flags.
---
 gnu/packages/version-control.scm | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/version-control.scm b/gnu/packages/version-control.scm
index bc4242fc10..9667b2f3ec 100644
--- a/gnu/packages/version-control.scm
+++ b/gnu/packages/version-control.scm
@@ -347,7 +347,8 @@ everything from small to very large projects with speed and efficiency.")
     (build-system cmake-build-system)
     (outputs '("out" "debug"))
     (arguments
-     `(#:phases
+     `(#:configure-flags '("-DUSE_SHA1DC=ON") ; SHA-1 collision detection
+       #:phases
        (modify-phases %standard-phases
          (add-after 'unpack 'fix-hardcoded-paths
            (lambda _
-- 
cgit 1.4.1