qipy: fix bootstrap on mac and windows
qipy: fix bootstrap on mac and windows

Change-Id: Ibafda5dde8993e5da298451ab066abe45d1d746d
Reviewed-on: http://gerrit.aldebaran.lan/41302
Reviewed-by: gschweitzer <6045566b37fb663fb001ea9c40953dcecf7d7d47@aldebaran-robotics.com>
Tested-by: gschweitzer <6045566b37fb663fb001ea9c40953dcecf7d7d47@aldebaran-robotics.com>

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