anchor.diff: -{ stdenv, fetchurl, gettext, intltool, pkgconfig, python2
  +{ stdenv, fetchurl, fetchpatch, faust, gettext, intltool, pkgconfig, python2
   , avahi, bluez, boost, eigen, fftw, glib, glib-networking
   , glibmm, gsettings-desktop-schemas, gtkmm2, libjack2
   , ladspaH, libav, libsndfile, lilv, lrdf, lv2, serd, sord, sratom
  
positive.code:     sha256 = "1nn80m1qagfhvv69za60f0w6ck87vmk77qmqarj7fbr8avwg63s9";
    };
  
    nativeBuildInputs = [ gettext intltool wrapGAppsHook pkgconfig python2 wafHook ];
  
    buildInputs = [
      avahi bluez boost eigen fftw glib glibmm glib-networking.out
  
negative.code:     zita-resampler curl
    ];
  
    postPatch = ''
      # Fix build with lv2 1.18: https://github.com/brummer10/guitarix/commit/c0334c72
      find . -type f -exec fgrep -q LV2UI_Descriptor {} \; \
        -exec sed -i {} -e 's/const struct _\?LV2UI_Descriptor/const LV2UI_Descriptor/' \;
    '';
  
    wafConfigureFlags = [
      "--shared-lib"
      "--no-desktop-update"
      "--enable-nls"
      "--install-roboto-font"
      "--includeresampler"
      "--convolver-ffmpeg"
  