Test failure when used with distro packaging

As part of my effort to package the entirety of MyCroft for Alpine Linux, I'm now trying to get MSM tests working. They all succeed except for test_main.py:

================================================ test session starts ================================================
platform linux -- Python 3.8.5, pytest-6.0.1, py-1.9.0, pluggy-0.13.1
rootdir: /home/bart/Documents/Git/alpine/aports/testing/mycroft-skills-manager/src/mycroft-skills-manager-0.8.8
collected 28 items                                                                                                  

tests/test_main.py F                                                                                          [  3%]
tests/test_mycroft_skills_manager.py ...........                                                              [ 42%]
tests/test_skill_entry.py ............                                                                        [ 85%]
tests/test_skill_repo.py ....                                                                                 [100%]

===================================================== FAILURES ======================================================
___________________________________________________ TestMain.test ___________________________________________________

self = <test_main.TestMain object at 0x7f0169b9dd90>

    def test(self):
        skill_names = {'skill-a', 'skill-b', 'skill-cd', 'skill-ce'}
        assert set(self('-r list')) == skill_names
        self('install skill-a')
>       self('install skill-b')

tests/test_main.py:64: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = <test_main.TestMain object at 0x7f0169b9dd90>, args = ('install skill-b',)
params = ['-u', 'https://github.com/mycroftai/mycroft-skills-manager', '-b', 'test-repo', '-c', '/home/bart/Documents/Git/alpine/aports/testing/mycroft-skills-manager/src/mycroft-skills-manager-0.8.8/tests/repo-instance', ...]
printer = <function TestMain.__call__.<locals>.printer at 0x7f016ac2c670>, ret = 230

    def __call__(self, *args):
        params = self.base_params + ' '.join(map(str, args)).split(' ')

        lines = []

        def printer(text):
            lines.extend(map(str.strip, text.split('\n')))
        print('CALLING:', params)
        ret = main(params, printer)
        if ret != 0:
>           raise ValueError('Returned: {} with output {}'.format(
                ret, ' '.join(lines)
            ))
E           ValueError: Returned: 230 with output PipRequirementsException: Pip returned code 2:  Permission denied while installing pip dependencies. Please run in virtualenv or use sudo

tests/test_main.py:55: ValueError

It seems it expects to be ran in a virtualenv or with root rights. Both of these are not available in usual distro build systems and it makes the test fail.

MycroftAI / mycroft-skills-manager

Test failure when used with distro packaging #80