kit
[USENET; poss. fr. DEC slang for a full software
distribution, as opposed to a patch or upgrade] n. A source
software distribution that has been packaged in such a way that it
can (theoretically) be unpacked and installed according to a series
of steps using only standard UNIX tools, and entirely documented by
some reasonable chain of references from the top-level README file.
The more general term distribution may imply that
special tools or more stringent conditions on the host environment
are required.