From e298629fec0fe6ffbd6e30dcb1fc4718bc807cb4 Mon Sep 17 00:00:00 2001
From: Robin Gloster <mail@glob.in>
Date: Sat, 26 Oct 2019 17:39:27 +0200
Subject: [PATCH] boost: *Flags are lists

---
 pkgs/development/libraries/boost/generic.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/development/libraries/boost/generic.nix b/pkgs/development/libraries/boost/generic.nix
index 2d0a5a63d6f7..82bcd49592d4 100644
--- a/pkgs/development/libraries/boost/generic.nix
+++ b/pkgs/development/libraries/boost/generic.nix
@@ -103,7 +103,7 @@ stdenv.mkDerivation {
 
   inherit src version;
 
-  patchFlags = "";
+  patchFlags = [];
 
   patches = patches
   ++ optional stdenv.isDarwin (