The previous text claimed restructuring main.rs to use the lib crate
would 'roughly halve' build time. Measured with --timings on a clean
release build, that was wrong:
33.7s keydr (bin)
26.0s keydr (lib)
1.4s generate_test_profiles (bin)
61.0s of 292.2s total unit-seconds (21%)
The duplicated units are indeed the two slowest in the graph, but the
saving is ~26s of unit-work (less in wall time, since they overlap with
dependency compilation across 3 jobs), not half the build. The other
~79% is one-time dependency compilation that incremental builds skip.
Replace the estimate with the measurement.
thallada
ce4a1a127d