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-rw-r--r--pkgs/games/dwarf-fortress/dfhack/default.nix1
1 files changed, 1 insertions, 0 deletions
diff --git a/pkgs/games/dwarf-fortress/dfhack/default.nix b/pkgs/games/dwarf-fortress/dfhack/default.nix
index 3d3b1c4d9aa8..1ee0f829571d 100644
--- a/pkgs/games/dwarf-fortress/dfhack/default.nix
+++ b/pkgs/games/dwarf-fortress/dfhack/default.nix
@@ -39,6 +39,7 @@ in stdenv.mkDerivation rec {
   };
 
   patches = [ ./use-system-libraries.patch ];
+  postPatch = "sed '1i#include <math.h>' -i plugins/3dveins.cpp";
 
   nativeBuildInputs = [ cmake perl XMLLibXML XMLLibXSLT fakegit ];
   # we can't use native Lua; upstream uses private headers