Fix Pyramid generation bug #50

Job	Run time
Build wheels on macos-13-xlarge	8m 9s
Build wheels on ubuntu-20.04	17m 0s
Build wheels on macos-13-xlarge	7m 50s
Build wheels on ubuntu-20.04	17m 6s
Build wheels on macos-13-xlarge	8m 58s
Build wheels on ubuntu-20.04	16m 57s
Build wheels on ubuntu-20.04	17m 19s
Build wheels on macos-12	17m 40s
Build wheels on macos-12	17m 2s
Build wheels on macos-12	18m 21s
Build wheels on macos-12	16m 43s
Build wheels on windows-latest	23m 43s
Build wheels on windows-latest	22m 43s
Build wheels on windows-latest	24m 10s
Build wheels on windows-latest	22m 45s
	4h 16m 26s

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