anchor.diff:      "--${boolEn (libpng != null)}-libpng"
       "--${boolEn (libvorbis != null)}-libvorbis"
       "--${boolEn (flac != null)}-libflac"
  -    # TODO: libcue support
  -    "--disable-libcue"
  +    "--${boolEn (libcue != null)}-libcue"
       "--enable-abiword"
       "--enable-dvi"
       "--enable-mp3"
  
positive.code:     gtk
      #gupnp-dlna
      icu
      #libcue
      libexif
      #libgrss
      libgsf
  
negative.code:     "--${boolEn (taglib != null)}-taglib"
      "--enable-tracker-needle"
      "--enable-tracker-preferences"
      "--disable-enca"  # ICU is used instead
      "--enable-icu-charset-detection"
      "--${boolEn (libxml2 != null)}-libxml2"
      "--enable-generic-media-extractor=libav"
      "--enable-unzip-ps-gz-files"
      "--${boolEn (poppler != null)}-poppler"
      "--${boolEn (libgxps != null)}-libgxps"
  