anchor.diff:        "sysconfdir=$out/etc"
       )
     '';
  +
  +  passthru = {
  +    srcVerification = fetchurl {
  +      inherit (src)
  +        outputHash
  +        outputHashAlgo
  +        urls;
  +      fullOpts = {
  +        sha1Confirm = "9b452bc3d85d749d63644c51cc2fa0465890f659";
  +      };
  +      failEarly = true;
  +    };
  +  };
   
     meta = with lib; {
       description = "A D-Bus service for power management";
  
positive.code: }:
  
  let
    inherit (lib)
      boolEn
      boolWt;
  in
  stdenv.mkDerivation rec {
    name = "upower-0.99.7";
  
    src = fetchurl {
      url = "https://upower.freedesktop.org/releases/${name}.tar.xz";
      multihash = "QmcPxNxvv94cTCpmgLpjMWH3wfBZduqaz6jWStUtXfwBYA";
      sha256 = "24bcc2f6ab25a2533bac70b587bcb019e591293076920f5b5e04bdedc140a401";
    };
  
    nativeBuildInputs = [
  
negative.code:     "--localstatedir=/var"
      "--sysconfdir=/etc"
      "--disable-maintainer-mode"
      "--enable-introspection"
      "--enable-deprecated"
      "--enable-manpages"
      "--with-backend=linux"
      "--enable-idevice"
    ];
  
    preInstall = ''
  