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Update installation instructions to fix compilation in el9 machines #435

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Run time

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Job	Run time
Run linter (flake8+black)	15s
Compile (py3.8, root6.22)	5m 13s
Compile (py2.7.18, root6.22.0)	4m 50s
Compile (py3.9, root6.24)	5m 48s
Compile (py3.10, root6.26.4)	6m 2s
	22m 8s