nauty: disable cpu feature detection

pkgs/applications/science/math/nauty/default.nix

@@ -1,6 +1,7 @@
 { stdenv
 , lib
 , fetchurl
+, optimize ? false # impure
 }:
 stdenv.mkDerivation rec {
   name = "nauty-${version}";
@@ -10,6 +11,13 @@ stdenv.mkDerivation rec {
     sha256 = "05z6mk7c31j70md83396cdjmvzzip1hqb88pfszzc6k4gy8h3m2y";
   };
   outputs = [ "out" "dev" ];
+  configureFlags = lib.optionals (!optimize) [
+    # Prevent nauty from sniffing some cpu features. While those are very
+    # widely available, it can lead to nasty bugs when they are not available:
+    # https://groups.google.com/forum/#!topic/sage-packaging/Pe4SRDNYlhA
+    "--disable-popcnt"
+    "--disable-clz"
+  ];
   buildInputs = [];
   installPhase = ''
     mkdir -p "$out"/{bin,share/doc/nauty} "$dev"/{lib,include/nauty}