Oh, it had no effect because we actually use Python 3 for docs

nixos/openssl-111k.nix

@@ -10,7 +10,13 @@ self: super: rec {
   });
   openssl = openssl_1_1;
 
-  python27 = super.python27.override (old: {
+  python2 = super.python2.override (old: {
+    packageOverrides = python-self: python-super: {
+      pyopenssl = python-super.callPackage ./pkgs/pyopenssl.nix { };
+    };
+  });
+
+  python3 = super.python3.override (old: {
     packageOverrides = python-self: python-super: {
       pyopenssl = python-super.callPackage ./pkgs/pyopenssl.nix { };
     };