Build

simplified `init.py` #712

Job	Run time
R ubuntu-22.04 (release)	8m 51s
build-and-test-python (3.12, ubuntu-24.04)	5m 43s
build-and-test-python (3.12, ubuntu-24.04-arm)	5m 25s
build-and-test-python (3.12, windows-latest)	13m 35s
build-and-test-python (3.12, macos-14-large)	5m 57s
build-and-test-python (3.12, macos-14-xlarge)	2m 31s
	42m 2s

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