install Gifsicle / Optipng / Jpegoptim / libjpeg
Gifsicle / Optipng / Jpegoptim / libjpeg should be pre-installed or at least it should be possible to install this modules afterwards. Currently it's not possible at all.
Marco Mark commented
I also desperately need the the mentioned and below listed image related packages installed. It is such a common requirement for any website to optimise images.
Mario Reatti commented
it should be very interesting. Please add this piece of code..