in lib/omnibus/packagers/deb.rb [230:241]
def compression_level(val = NULL)
if null?(val)
@compression_level || 9
else
unless val.is_a?(Integer) && 1 <= val && 9 >= val
raise InvalidValue.new(:compression_level, "be an Integer between 1 and 9")
end
@compression_level = val
end
end