Hi Stephan,
I think you can try:
#@METADATASTART
#@DetailDescriptionStart
################################################################
# System Script
#
# Script : Using pip.
# Revision : 1.0
# Last updated : 7/17/2018
# Purpose : To know using pip at XMC.
#
################################################################
#@DetailDescriptionEnd
#@ScriptDescription "Using pip"
#@SectionStart ( description = "pip install some")
#@SectionEnd
#@MetaDataEnd
import sys
sys.path.append('/usr/local/Extreme_Networks/NetSight/appdata/scripting')
import os
import pip
import inspect
from xmclib import emc_vars
from xmclib import logger
print("Running Python version is: %s" % sys.version)
print("Running Python PATH is: %s" % sys.executable)
print("Running module os is: %s" % inspect.getfile(os))
print("---Start pip install a")
pip.main(['install', 'a'])
print("Running module a is: %s" % inspect.getfile(a))
There would be two way, install package from XMC and from shell of running XMC.I believe from XMC is safer. But no guarantee, possible name space conflict etc.
Also from shell would break system ( running XMC environment) Python environment.