in the making
(idiomatic) In development; in the process of being made or evolving.
You're witnessing a great reference work in the making.
Writing is a form of personal freedom. It frees us from the mass identity we see in the making all around us. In the end, writers will write not to be outlaw heroes of some underculture but mainly to save themselves, to survive as individuals. Don DeLillo
I do not look upon these United States as a finished product. We are still in the making. Franklin D. Roosevelt
One cannot make oneself, but one can sometimes help a little in the making of somebody else. It is well. Dinah Craik
The people, and the people alone, are the motive force in the making of world history. Mao Zedong
Through the skill and devotion to duty of their armed forces of all branches in the Midway area our citizens can now rejoice that a momentous victory is in the making. Chester W. Nimitz
Idealist: a cynic in the making. Irving Layton