Flailing around trying to fix pyOpenSSL on Python 3

nixos/openssl-111k.nix

@@ -47,7 +47,7 @@ self: super: {
     };
   });
 
-  python3 = super.python3.override (old: {
+  python37 = super.python37.override (old: {
     packageOverrides = composePackageOverrides {
       pkgs = super;
       inherit old;