Although the version date is going back in time, the commit,
88256102[1], is newer than the one on e24e5dceb[2], as it may be seen
from the Sourcehut's log[3].
Also refactor the `configurePhase` into `makeFlags`.
[1]: 88256102a9
[2]: e24e5dceb8
[3]: https://git.sr.ht/~sircmpwn/hare-json/log