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{ stdenvNoCC, writeShellApplication, makeWrapper, rsync, kobo-utils, lib, ... }:
src:
let
  deployScript = writeShellApplication {
    name = "deploy";
    runtimeInputs = [
      rsync
      kobo-utils
    ];
    text = ''
      PAYLOAD="./payload"

      if [[ ! -d "$PAYLOAD" ]]; then
        >&2 echo "./payload is not a directory I can copy..."
        exit 1
      fi

      KOBOMNT="$(kobo-find -f -w)"
      KOBODIR="$KOBOMNT/.kobo"

      if [[ -z "$KOBOMNT" ]]; then
        >&2 echo "Cannot find mounted kobo"
        exit 1
      elif [[ ! -d "$KOBODIR" ]]; then
        >&2 echo "$KOBODIR does not appear to exist. Is this really a kobo?"
        exit 1
      fi

      echo "Deploying payload"

      rsync -rv --executability --chmod=u+w "$PAYLOAD/" "$KOBODIR"
    '';
  };
in stdenvNoCC.mkDerivation (finalAttrs: {
  name = "deploy-kobo";

  inherit src;

  nativeBuildInputs = [
    makeWrapper
  ];

  buildInputs = [
    kobo-utils
    rsync
  ];

  phases = "installPhase";

  installPhase = ''
    runHook preInstall

    mkdir -p $out
    cp -r $src $out/payload

    mkdir -p $out/bin
    makeWrapper "${lib.getExe deployScript}" $out/bin/deploy --chdir "$out"

    runHook postInstall
  '';

  meta = {
    mainProgram = "deploy";
  };
})