pkgs.alejandra

    extraOverlay = self: super: {
      alejandra = alejandra.defaultPackage.${system};
    };

        extraOverlay

      fonts = {
        home.packages = [
          pkgs.lato
          pkgs.alegreya
          pkgs.source-code-pro
          pkgs.alegreya-sans
        ];
      };

        ({pkgs, ...}: {home.packages = [pkgs.aria2];})
        ({pkgs, ...}: {home.packages = [pkgs.source-code-pro];})

        {
          home.packages = [alejandra.defaultPackage.${system}];
        }
        {
          home.packages = [pkgs.aria2];
        }

        self.homeManagerModules.fonts