anchor.diff:      graphicsmagick
       gsettings-desktop-schemas
       gtk3
  +    hicolor-icon-theme
       libnotify
       librsvg
       libxslt
  
positive.code: , graphicsmagick
  , gsettings-desktop-schemas
  , gtk3
  , libnotify
  , librsvg
  , libxslt
  
negative.code:     "LANG_GTKSOURCEVIEW_DIR=/share/gtksourceview-4/language-specs"
      # Pretend to be redhat so `install` doesn't try to chown/chgrp.
      "SYSTEM_TYPE=rpm"
      "GCC=${stdenv.cc.targetPrefix}cc"
      "GCC_PP=${stdenv.cc.targetPrefix}c++"
    ];
  
    preFixup = ''
  