Не удалось установить Простоту из-за недостающих зависимостей

При получении следующего сообщения об ошибке при установке Простоты даже необходимые пакеты там. Посмотрите ниже для полного изложения. Сообщите мне то, что пошло не так, как надо...

configure: error: Package requirements ( clutter-gst-1.0 clutter-gtk-0.10 >= 0.10 gee-1.0 gmodule-2.0 json-glib-1.0 >= 0.7.6 libarchive poppler-glib rest-0.6  rest-extras-0.6 unique-1.0) were not met:

No package 'clutter-gst-1.0' found

No package 'gee-1.0' found

No package 'poppler-glib' found

No package 'rest-0.6' found

No package 'rest-extras-0.6' found

No package 'unique-1.0' found

Consider adjusting the PKG_CONFIG_PATH environment variable if you installed software in a non-standard prefix.

Alternatively, you may set the environment variables EASE_CFLAGS and EASE_LIBS to avoid the need to call pkg-config. See the pkg-config man page for more details.

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 $ apt-cache policy clutter-gst-1.0 

gir1.2-clutter-gst-1.0:
  Installed: (none)
  Candidate: 1.3.6-1
  Version table:
     1.3.6-1 0
        500 http://us.archive.ubuntu.com/ubuntu/ natty/universe i386 Packages
libclutter-gst-1.0-0:
  Installed: 1.3.6-1
  Candidate: 1.3.6-1
  Version table:
 *** 1.3.6-1 0
        500 http://us.archive.ubuntu.com/ubuntu/ natty/universe i386 Packages
        100 /var/lib/dpkg/status
     1.2.0-0ppa1natty0 0
        500 http://ppa.launchpad.net/natesm/ease/ubuntu/ natty/main i386 Packages
libclutter-gst-1.0-dbg:
  Installed: (none)
  Candidate: 1.3.6-1
  Version table:
     1.3.6-1 0
        500 http://us.archive.ubuntu.com/ubuntu/ natty/universe i386 Packages
     1.2.0-0ppa1natty0 0
        500 http://ppa.launchpad.net/natesm/ease/ubuntu/ natty/main i386 Packages
libclutter-gst-1.0-dev:
  Installed: (none)
  Candidate: 1.2.0-0ppa1natty0
  Version table:
     1.2.0-0ppa1natty0 
        500 http://ppa.launchpad.net/natesm/ease/ubuntu/ natty/main i386 Packages