I recently compiled a contribution graph (number of lines changed per user) for gcc since 2015 using Mercurial&#x27;s churn command and a simple revset:<p><a href="http:&#x2F;&#x2F;paste.debian.net&#x2F;plain&#x2F;442020" rel="nofollow">http:&#x2F;&#x2F;paste.debian.net&#x2F;plain&#x2F;442020</a><p>(I excluded the po files, as that gives one user too much credit, since he just checked in the translations, but didn&#x27;t write them himself.)<p>This is a rather unusual contribution graph. Most I&#x27;ve seen follow a very stark power law, with one contributor doing over 90% of the work, and the second contributor doing around 5%. This graph shows a lot more collaboration from many people. The development of gcc seems healthier than ever!