Disable tests in package build for flake consumption

Some tests require network access or specific environment conditions
that aren't available during Nix build sandboxing. Skip tests in the
package derivation to allow consuming this flake as a dependency.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

flake.nix

@@ -64,6 +64,8 @@
 
           nativeBuildInputs = [ pkgs.pkg-config ];
           buildInputs = [ pkgs.openssl ];
+
+          doCheck = false;
         };
       }
     );