From b34a8912955ef23c166e4f3d0e5af42f1c10c24a Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Tue, 18 Jul 2017 15:54:47 +0200
Subject: [PATCH] gnome3.gcr: prevent dependency cycle
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When overriding gnupg to uss pinentry gnome3 frontend, there is
a dependency cycle:

    gnupg → pinentry_gnome → gcr → gnupg

This commit overrides the gnupg required by gcr to not build GUI.
---
 pkgs/desktops/gnome-3/core/gcr/default.nix | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/pkgs/desktops/gnome-3/core/gcr/default.nix b/pkgs/desktops/gnome-3/core/gcr/default.nix
index e04bb734aea..21b9d89e3c3 100644
--- a/pkgs/desktops/gnome-3/core/gcr/default.nix
+++ b/pkgs/desktops/gnome-3/core/gcr/default.nix
@@ -7,8 +7,10 @@ stdenv.mkDerivation rec {
 
   outputs = [ "out" "dev" ];
 
-  buildInputs = [
-    pkgconfig intltool gnupg gobjectIntrospection libxslt
+  buildInputs = let
+    gpg = gnupg.override { guiSupport = false; }; # prevent build cycle with pinentry_gnome
+  in [
+    pkgconfig intltool gpg gobjectIntrospection libxslt
     libgcrypt libtasn1 dbus_glib pango gdk_pixbuf atk makeWrapper vala_0_32
   ];