6 files changed, 1 insertions, 16 deletions
diff --git a/pkgs/games/cataclysm-dda/default.nix b/pkgs/games/cataclysm-dda/default.nix
index b46114ec62be..3956c994531e 100644
--- a/pkgs/games/cataclysm-dda/default.nix
+++ b/pkgs/games/cataclysm-dda/default.nix
@@ -21,9 +21,6 @@ stdenv.mkDerivation rec {
     sed -i Makefile \
       -e 's,-Werror,,g' \
       -e 's,\(DATA_PREFIX=$(PREFIX)/share/\)cataclysm-dda/,\1,g'
-
-    sed '1i#include <cmath>' \
-      -i src/{crafting,skill,weather_data,melee,vehicle,overmap,iuse_actor}.cpp
   '';
 
   makeFlags = "PREFIX=$(out) LUA=1 TILES=1 SOUND=1 RELEASE=1 USE_HOME_DIR=1";
diff --git a/pkgs/games/dwarf-fortress/dfhack/default.nix b/pkgs/games/dwarf-fortress/dfhack/default.nix
index 1ee0f829571d..3d3b1c4d9aa8 100644
--- a/pkgs/games/dwarf-fortress/dfhack/default.nix
+++ b/pkgs/games/dwarf-fortress/dfhack/default.nix
@@ -39,7 +39,6 @@ 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
diff --git a/pkgs/games/dwarf-fortress/unfuck.nix b/pkgs/games/dwarf-fortress/unfuck.nix
index 5b2327c2ff54..1d6ea1196dab 100644
--- a/pkgs/games/dwarf-fortress/unfuck.nix
+++ b/pkgs/games/dwarf-fortress/unfuck.nix
@@ -13,8 +13,6 @@ stdenv.mkDerivation {
     sha256 = "12bqh3k4wsk1c0bz2zly8h0ilbsdmsbwr9cdjc6i7liwg9906g7i";
   };
 
-  postPatch = "sed '1i#include <math.h>' -i g_src/ttf_manager.cpp";
-
   cmakeFlags = [
     "-DGTK2_GLIBCONFIG_INCLUDE_DIR=${glib.out}/lib/glib-2.0/include"
     "-DGTK2_GDKCONFIG_INCLUDE_DIR=${gtk2.out}/lib/gtk-2.0/include"
diff --git a/pkgs/games/openspades/default.nix b/pkgs/games/openspades/default.nix
index 143fa21ce2e5..2203bb6337eb 100644
--- a/pkgs/games/openspades/default.nix
+++ b/pkgs/games/openspades/default.nix
@@ -16,11 +16,7 @@ stdenv.mkDerivation rec {
   postPatch = ''
     substituteInPlace Sources/Client/Client_Input.cpp --replace "isnan(" "std::isnan("
     substituteInPlace Sources/Client/Corpse.cpp --replace "isnan(" "std::isnan("
-    substituteInPlace Sources/Draw/SWMapRenderer.cpp \
-      --replace "isnan(" "std::isnan(" --replace "isinf(" "std::isinf("
-    sed '1i#include <cmath>' -i Sources/Client/{Player,Client_Input,Corpse}.cpp \
-      -i Sources/Draw/SWMapRenderer.cpp
-    sed '1i#include <math.h>' -i Sources/Draw/SWFeatureLevel.h
+    substituteInPlace Sources/Draw/SWMapRenderer.cpp --replace "isnan(" "std::isnan(" --replace "isinf(" "std::isinf("
   '';
 
   nativeBuildInputs = 
diff --git a/pkgs/games/openspades/git.nix b/pkgs/games/openspades/git.nix
index 7d76573f7345..8212f160cda8 100644
--- a/pkgs/games/openspades/git.nix
+++ b/pkgs/games/openspades/git.nix
@@ -14,8 +14,6 @@ stdenv.mkDerivation rec {
     sha256 = "0vyvmgim03q8pcmfa1i0njr4w1lpjq5g3b47f67v9b5c5jcjycwn";
   };
 
-  postPatch = "sed '1i#include <cmath>' -i Sources/Client/{,Client}Player.cpp";
-
   nativeBuildInputs = 
     with stdenv.lib;
     [ cmake curl glew makeWrapper mesa SDL2 SDL2_image unzip wget zlib ]
diff --git a/pkgs/games/the-butterfly-effect/default.nix b/pkgs/games/the-butterfly-effect/default.nix
index 68114bb75652..7cd54b1b65b3 100644
--- a/pkgs/games/the-butterfly-effect/default.nix
+++ b/pkgs/games/the-butterfly-effect/default.nix
@@ -10,13 +10,10 @@ stdenv.mkDerivation rec {
     sha256 = "1ag2cp346f9bz9qy6za6q54id44d2ypvkyhvnjha14qzzapwaysj";
   };
 
-  postPatch = "sed '1i#include <vector>' -i src/model/World.h";
-
   buildInputs = [
     qt5.qtbase qt5.qtsvg qt5.qttranslations box2d which cmake
     gettext
   ];
-  enableParallelBuilding = true;
 
   installPhase = ''
     make DESTDIR=.. install