anchor.diff:      "--with-compile-warnings"
       #"--with-bash-completion-dir="
       #"--with-session-bus-services-dir"
  -    #"--with-unicode-support"
  +    "--with-unicode-support=libicu"
       #"--with-evolution-plugin-dir"
       #"--with-thunderbird-plugin-dir"
       #"--with-firefox-plugin-dir"
       #"--with-nautilus-extensions-dir"
       # TODO: gstreamer support
       "--with-gstreamer-backend=discoverer"
  -    #"--with-gstreamer-backend=gupnp-dlna"
     ];
   
     preFixup = ''
  
positive.code:     "--${boolEn (taglib != null)}-taglib"
      "--enable-tracker-needle"
      "--enable-tracker-preferences"
      "--disable-enca"
      "--enable-icu-charset-detection"
      "--${boolEn (libxml2 != null)}-libxml2"
      "--enable-cfg-man-pages"
      #"--enable-generic-media-extractor="
      "--enable-unzip-ps-gz-files"
      "--${boolEn (poppler != null)}-poppler"
      "--${boolEn (libgxps != null)}-libgxps"
  
negative.code: , gstreamer
  , gtk
  , icu
  , json-glib
  , libcue
  , libexif
  , libgee
  