{
  inputs = {
    nixpkgs.url = "nixpkgs/nixos-22.11";
  };

  outputs = { self, nixpkgs }: let
    system = "x86_64-linux";
    pkgs = nixpkgs.legacyPackages.${system};
  in {
    packages.${system} = {
      unidic = pkgs.callPackage ./nix/unidic.nix pkgs.python3Packages;
    };

    devShells.${system}.default = pkgs.mkShell {
      packages = with pkgs; [
        mecab
      ] ++ (with pkgs.python3Packages; [
        # flask
        # flask-cors
        mecab-python3
        nltk
        pandas
        # pip
        python
        scikit-learn
        spacy
      ]);
    };
  };
}