inform6: 6.42-r8 -> 6.42-r9

pkgs/by-name/in/inform6/package.nix

···
 
 stdenv.mkDerivation rec {
   pname = "inform6";
-  version = "6.42-r8";
+  version = "6.42-r9";
 
   src = fetchurl {
     url = "https://ifarchive.org/if-archive/infocom/compilers/inform6/source/inform-${version}.tar.gz";
-    sha256 = "sha256-Co3XNcr0LDGeEYTxIFmqTsaKm4q5VpLpVsTNnJHUX8o=";
+    sha256 = "sha256-aHYjqjdISnyUxtruDDWD0cHEOxBpvm3+TfNxtGofezQ=";
   };
 
   buildInputs = [ perl ];