{
  description = "Flake for 42 C";

  inputs = {
    flake-utils.url = "github:numtide/flake-utils";
    c_formatter_42.url = "github:maix-flake/c_formatter_42";
  };
  outputs = { self, nixpkgs, flake-utils, c_formatter_42 }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = nixpkgs.legacyPackages.${system};
        tmux-setup = pkgs.writeShellScriptBin "tmux-setup" ''
          #!/usr/bin/env sh
          SESSION="ft_ping"
          DIR=$(git rev-parse --show-toplevel 2>/dev/null || pwd)
          if ! tmux has-session -t $SESSION 2>/dev/null; then
            tmux new-session -d -s $SESSION -c "$DIR" -n dev
            tmux send-keys -t $SESSION:0 'vim' C-m
            tmux split-window -h -p 30 -t $SESSION:0 -c "$DIR"
            tmux send-keys -t $SESSION:0.1 'exec zsh' C-m
            tmux new-window -t $SESSION:1 -n git -c "$DIR"
            tmux send-keys -t $SESSION:1 'lazygit' C-m
          fi
          tmux select-window -t $SESSION:0
          tmux select-pane -t $SESSION:0.0
          tmux attach -t $SESSION
        '';
      in {
        devShell = pkgs.mkShell {
          packages = with pkgs; [
            tmux-setup
            c_formatter_42.packages.${system}.default
            clang
            clang-tools
            fastmod
            tree
          ] ++ (if stdenv.isLinux then [ pkgs.valgrind ] else [ ]);
        };
      });
}