{ inputs = { utils.url = "github:numtide/flake-utils"; }; outputs = { self, nixpkgs, utils }: utils.lib.eachDefaultSystem (system: let pkgs = nixpkgs.legacyPackages.${system}; in { devShell = pkgs.mkShell { buildInputs = with pkgs; [ ( python3.withPackages ( ps: [ ps.fontforge ] ) ) ]; }; } ); }