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1.                 From The Free On-line Dictionary of Computing (19 January 2023):
                   
   
   
                   
                     
   kit
      <jargon> (Usenet, possibly from DEC) Slang for a full
      software distribution, as opposed to a patch or upgrade.  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.
      [Jargon File]
      (1994-11-18)