All important messages should be echoed during install using an .install file. For
example, if a package needs extra setup to work, directions should be included.
Any optional dependencies that are not
needed to run the package or have it generally function should not be
included; instead the information should be added to the optdepends array:
optdepends=('cups: printing support'
'sane: scanners support'
'libgphoto2: digital cameras support'
'alsa-lib: sound support'
'giflib: GIF images support'
'libjpeg: JPEG images support'
'libpng: PNG images support')