nixops_unstable: mark cryptography insecure

          };

        })

        (self: super: {

          cryptography = super.cryptography.overridePythonAttrs (old: {

            meta = old.meta // {

              knownVulnerabilities = old.meta.knownVulnerabilities or [ ]

                ++ lib.optionals (lib.versionOlder old.version "39.0.1") [

                  "CVE-2022-4304"

                  "CVE-2023-0215"

                  "CVE-2023-0216"

                  "CVE-2023-0217"

                  "CVE-2023-0401"

                  "CVE-2022-4203"

                  "CVE-2022-4450"

                  "CVE-2023-23931"

                ];

            };

          });

        })

      ];

    }

  ).python;