Newer versions of pip use an isolated virtual environment when building
Python projects. However, when the source code of CRIT is copied into
the isolated environment, the symlink for `../lib/py` (pycriu) becomes
invalid. As a workaround, we used the `--no-build-isolation` option for
`pip install`. However, this functionality has issues in some versions
of PIP [1, 2]. To fix this problem, this patch adds separate packages
for pycriu and crit, and each package is installed independently.
[1] https://github.com/pypa/pip/pull/8221
[2] https://github.com/pypa/pip/issues/8165#issuecomment-625401463
Signed-off-by: Radostin Stoyanov <rstoyanov@fedoraproject.org>