herwig: 7.2.2 -> 7.2.3

pkgs/development/libraries/physics/herwig/default.nix

@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   pname = "herwig";
-  version = "7.2.2";
+  version = "7.2.3";
 
   src = fetchurl {
     url = "https://www.hepforge.org/archive/herwig/Herwig-${version}.tar.bz2";
-    sha256 = "10y3fb33zsinr0z3hzap9rsbcqhy1yjqnv4b4vz21g7mdlw6pq2k";
+    hash = "sha256-VZmJk3mwGwnjMaJCbXjTm39uwSbbJUPp00Cu/mqlD4Q=";
   };
 
   nativeBuildInputs = [ autoconf automake libtool gfortran ];
@@ -17,6 +17,10 @@ stdenv.mkDerivation rec {
 
   postPatch = ''
     patchShebangs ./
+
+    # Fix failing "make install" being unable to find HwEvtGenInterface.so
+    substituteInPlace src/defaults/decayers.in.in \
+      --replace "read EvtGenDecayer.in" ""
   '';
 
   configureFlags = [