diff --git a/pkgs/development/interpreters/erlang/R21.nix b/pkgs/development/interpreters/erlang/R21.nix
index 2fe58a76b03..e1145090c86 100644
--- a/pkgs/development/interpreters/erlang/R21.nix
+++ b/pkgs/development/interpreters/erlang/R21.nix
@@ -3,8 +3,4 @@
 mkDerivation {
   version = "21.3.8.21";
   sha256 = "sha256-zQCs2hOA66jxAaxl/B42EKCejAktIav2rpVQCNyKCh4=";
-
-  prePatch = ''
-    substituteInPlace configure.in --replace '`sw_vers -productVersion`' "''${MACOSX_DEPLOYMENT_TARGET:-10.12}"
-  '';
 }
diff --git a/pkgs/development/interpreters/erlang/R22.nix b/pkgs/development/interpreters/erlang/R22.nix
index 59bd5a5d3f7..8bfe111f065 100644
--- a/pkgs/development/interpreters/erlang/R22.nix
+++ b/pkgs/development/interpreters/erlang/R22.nix
@@ -5,9 +5,4 @@
 mkDerivation {
   version = "22.3.4.16";
   sha256 = "sha256-V0RwEPfjnHtEzShNh6Q49yGC5fbt2mNR4xy6f6iWvck=";
-
-  prePatch = ''
-    substituteInPlace make/configure.in --replace '`sw_vers -productVersion`' "''${MACOSX_DEPLOYMENT_TARGET:-10.12}"
-    substituteInPlace erts/configure.in --replace '-Wl,-no_weak_imports' ""
-  '';
 }
diff --git a/pkgs/development/interpreters/erlang/R23.nix b/pkgs/development/interpreters/erlang/R23.nix
index 23a68b7ee85..8c07c09f221 100644
--- a/pkgs/development/interpreters/erlang/R23.nix
+++ b/pkgs/development/interpreters/erlang/R23.nix
@@ -5,9 +5,4 @@
 mkDerivation {
   version = "23.2.6";
   sha256 = "sha256-G930sNbr8h5ryI/IE+J6OKhR5ij68ZhGo1YIEjSOwGU=";
-
-  prePatch = ''
-    substituteInPlace make/configure.in --replace '`sw_vers -productVersion`' "''${MACOSX_DEPLOYMENT_TARGET:-10.12}"
-    substituteInPlace erts/configure.in --replace '-Wl,-no_weak_imports' ""
-  '';
 }
diff --git a/pkgs/development/interpreters/erlang/generic-builder.nix b/pkgs/development/interpreters/erlang/generic-builder.nix
index 632eb9c541a..325d8e87e4a 100644
--- a/pkgs/development/interpreters/erlang/generic-builder.nix
+++ b/pkgs/development/interpreters/erlang/generic-builder.nix
@@ -64,13 +64,6 @@ in stdenv.mkDerivation ({
   # On some machines, parallel build reliably crashes on `GEN    asn1ct_eval_ext.erl` step
   enableParallelBuilding = parallelBuild;
 
-  # Clang 4 (rightfully) thinks signed comparisons of pointers with NULL are nonsense
-  prePatch = ''
-    substituteInPlace lib/wx/c_src/wxe_impl.cpp --replace 'temp > NULL' 'temp != NULL'
-
-    ${prePatch}
-  '';
-
   postPatch = ''
     patchShebangs make
 
@@ -132,6 +125,7 @@ in stdenv.mkDerivation ({
 // optionalAttrs (preUnpack != "")      { inherit preUnpack; }
 // optionalAttrs (postUnpack != "")     { inherit postUnpack; }
 // optionalAttrs (patches != [])        { inherit patches; }
+// optionalAttrs (prePatch != "")       { inherit prePatch; }
 // optionalAttrs (patchPhase != "")     { inherit patchPhase; }
 // optionalAttrs (configurePhase != "") { inherit configurePhase; }
 // optionalAttrs (preConfigure != "")   { inherit preConfigure; }