gistfile1.txt

In this moment of year NixPkgs already close to half of the umber of commits from previous year.
commits=12747/26374=0.483

velocity_last_year=26374/365=72.258 commits/day
velocity_this_time=12747/109=116.945 commits/day
velocity_times=velocity_this_year/velocity_last_year=1.618 times

accel=(velocity_this_time-velocity_last_year)/current_day=0.410 commits/day^2
velocity_end_of_year_extrapolated=velocity_last_year+365*accel=221.899 commits/day

considering autoupdaters:
velocity_this_time=98.596 commits/day
acc=0.242 commits/day^2
velocity_end_of_year_extrapolated=160.456 commits/day

So man contribution would double this year.
And automation would add on it even more.