From 89a5e6db55e45994fa343ec91586065ce929b831 Mon Sep 17 00:00:00 2001
From: Mitsuhiro Nakamura <m.nacamura@gmail.com>
Date: Tue, 15 May 2018 14:30:37 +0900
Subject: [PATCH] rPackages.JuniperKernel: fix non-Darwin build

---
 pkgs/development/r-modules/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/development/r-modules/default.nix b/pkgs/development/r-modules/default.nix
index 451fc1dc6fe..cbaea0f0d85 100644
--- a/pkgs/development/r-modules/default.nix
+++ b/pkgs/development/r-modules/default.nix
@@ -757,7 +757,7 @@ let
     });
 
     JuniperKernel = old.JuniperKernel.overrideDerivation (attrs: {
-      postPatch = ''
+      postPatch = lib.optionalString stdenv.isDarwin ''
         for file in {R,src}/*.R; do
             sed -i 's#system("which \(otool\|install_name_tool\)"[^)]*)#"${pkgs.darwin.cctools}/bin/\1"#g' $file
         done