#if NIX_VERSION >= 0x021900

#if NIX_VERSION >= 0x022600
    std::optional<std::filesystem::path> getSourcePath(const Input &input) const override
#elif NIX_VERSION >= 0x021900

#if NIX_VERSION >= 0x022100

#if NIX_VERSION >= 0x022600
        writeFile(*root / path.rel(), contents);
#elif NIX_VERSION >= 0x022100

      nix_2_25 = localRepoCheck pkgs.nixVersions.nix_2_25;

      nix_2_26 = localRepoCheck pkgs.nixVersions.nix_2_26;

        "lastModified": 1732780316,
        "narHash": "sha256-NskLIz0ue4Uqbza+1+8UGHuPVr8DrUiLfZu5VS4VQxw=",

        "lastModified": 1745377448,
        "narHash": "sha256-jhZDfXVKdD7TSEGgzFJQvEEZ2K65UMiqW5YJ2aIqxMA=",

        "rev": "226216574ada4c3ecefcbbec41f39ce4655f78ef",

        "rev": "507b63021ada5fee621b6ca371c4fca9ca46f52c",