Test of package installation & execution #601

Job	Run time
build_conda (windows-latest, conda, true)	7m 14s
build_pip (windows-latest, pip, true)	4m 0s
build_pip (macos-latest, pip, true)	1s
build_conda (ubuntu-latest, conda, true)	7m 3s
build_conda (macos-latest, conda, true)	1s
build_pip (ubuntu-latest, pip, false)	7m 6s
build_pip (ubuntu-latest, pip, true)	10m 4s
	35m 29s

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