From f31ea5a2d58c2487b4927bd2e59ae3269ae24368 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Domen=20Ko=C5=BEar?= <domen@dev.si>
Date: Tue, 27 Nov 2018 19:38:54 +0000
Subject: [PATCH] postgresql: conditionalize systemd (on darwin)

---
 pkgs/servers/sql/postgresql/default.nix | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pkgs/servers/sql/postgresql/default.nix b/pkgs/servers/sql/postgresql/default.nix
index c91a9bb8b9ab..16eeac038111 100644
--- a/pkgs/servers/sql/postgresql/default.nix
+++ b/pkgs/servers/sql/postgresql/default.nix
@@ -16,7 +16,8 @@ let
     setOutputFlags = false; # $out retains configureFlags :-/
 
     buildInputs =
-      [ zlib readline openssl libxml2 makeWrapper systemd ]
+      [ zlib readline openssl libxml2 makeWrapper ]
+      ++ lib.optionals (atLeast "9.6" && !stdenv.isDarwin) [ systemd ]
       ++ lib.optionals (!stdenv.isDarwin) [ libossp_uuid ];
 
     enableParallelBuilding = true;