fix: drop weird package that was caused by stupidity

pkgs/emulationstation-de.nix

@@ -15,13 +15,34 @@
   poppler,
   pugixml,
   SDL2,
+  writeText,
   ...
-}:
-
-let
+}: let
   version = "3.1.0";
   hash = "sha256-v9nOY9T5VOVLBUKoDXqwYa1iYvW42iGA+3kpPUOmHkg=";
-in stdenv.mkDerivation {
+
+  patch = writeText "emulationstation-de.patch" ''
+    --- a/resources/systems/unix/es_find_rules.xml
+    +++ b/resources/systems/unix/es_find_rules.xml
+    @@ -19,6 +19,8 @@
+                 <entry>~/.config/retroarch/cores</entry>
+                 <!-- FreeBSD repository -->
+                 <entry>/usr/local/lib/libretro</entry>
+    +            <!-- NixOS / Nixpkgs -->
+    +            <entry>/run/current-system/sw/lib/retroarch/cores</entry>
+             </rule>
+         </core>
+         <emulator name="ADVANCEMAME">
+    @@ -667,4 +669,4 @@
+                 <entry>~/bin/ZEsarUX/zesarux</entry>
+             </rule>
+         </emulator>
+    -</ruleList>
+    \ No newline at end of file
+    +</ruleList>
+  '';
+in
+  stdenv.mkDerivation {
     pname = "emulationstation-de";
     inherit version;
 
@@ -30,7 +51,7 @@ in stdenv.mkDerivation {
       inherit hash;
     };
 
-  patches = [ ./emulationstation-de.patch ];
+    patches = [patch];
 
     nativeBuildInputs = [
       cmake

pkgs/emulationstation-de.patch

@@ -1,18 +0,0 @@
---- a/resources/systems/unix/es_find_rules.xml
-+++ b/resources/systems/unix/es_find_rules.xml
-@@ -19,6 +19,8 @@
-             <entry>~/.config/retroarch/cores</entry>
-             <!-- FreeBSD repository -->
-             <entry>/usr/local/lib/libretro</entry>
-+            <!-- NixOS / Nixpkgs -->
-+            <entry>/run/current-system/sw/lib/retroarch/cores</entry>
-         </rule>
-     </core>
-     <emulator name="ADVANCEMAME">
-@@ -667,4 +669,4 @@
-             <entry>~/bin/ZEsarUX/zesarux</entry>
-         </rule>
-     </emulator>
--</ruleList>
-\ No newline at end of file
-+</ruleList>