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{ depot, pkgs, ... }:

let
  inherit (depot.nix) writeExecline getBins;
  bins = getBins pkgs.rlwrap [ "rlwrap" ]
      // getBins pkgs.s6-portable-utils [ { use = "s6-cat"; as = "cat"; } ]
      // getBins pkgs.execline [ "execlineb" ];

  shell =
    let
      prompt = [ "if" [ "printf" ''\e[0;33me>\e[0m '' ] ];
    in writeExecline "execline-shell" {} ([
      bins.rlwrap
        "--remember"
        "--quote-characters" "\""
        "--complete-filenames"
        "--ansi-colour-aware"
    ] ++ prompt ++ [
      "forstdin" "-d\n" "cmd"
      "importas" "cmd" "cmd"
      "foreground" [ bins.execlineb "-Pc" "$cmd" ]
    ] ++ prompt);

in pkgs.writers.writeDash "e" ''
  set -e
  if [ $# -eq 0 ]; then
    ${shell}
  else
    export EXECLINE_STRICT=2
    ${depot.users.Profpatsch.execline.run-cmd-line-block}/bin/run-cmd-line-block "$@"
  fi
''