Fix simplesat build (#287) #37

Job	Run time
code-lint	11s
run-tests (3.8, ubuntu-latest)	23s
run-tests (3.8, macos-12)	31s
run-tests (3.8, macos-latest)	48s
run-tests (3.8, windows-latest)	57s
run-tests (3.11, ubuntu-latest)	22s
run-tests (3.11, macos-12)	33s
run-tests (3.11, macos-latest)	17s
run-tests (3.11, windows-latest)	56s
run-tests (pypy3.8, ubuntu-latest)	1m 9s
run-tests (pypy3.8, macos-12)	1m 27s
run-tests (pypy3.8, macos-latest)	56s
run-tests (pypy3.8, windows-latest)	2m 1s
run-tests (ubuntu-20.04, 3.6)	22s
coverage	11s
build-docs	34s
	11m 38s

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