fix/allow-pip-to-fetch-runtime-dependencies-during-isolated-install

[prasad-sawantdesai]

Removed --no-index from the pip install command so that runtime dependencies like numpy can be fetched from PyPI.
when we have AL_PYTHON_BINDINGS=ON in the cmake configuration, --no-index was restricting pip to use dependencies from local folder, it was causing install error like below.

Processing ./dist/imas_core-5.6.1.dev4-cp311-cp311-linux_x86_64.whl
INFO: pip is looking at multiple versions of imas-core to determine which version is compatible with other requirements. This could take a while.
ERROR: Could not find a version that satisfies the requirement numpy (from imas-core) (from versions: none)
ERROR: No matching distribution found for numpy

*Note : Tested it locally but need to confirm this behavior on all the platforms

[prasad-sawantdesai]

discussion: #21

[maarten-ic]

The problem (and why I submitted #21) was because Bartek Palak wanted to use the easybuild config for a released version of imas-core on the EF Gateway. It would download the Python package from PyPI instead of the just-built python package during the install step.

The problem is listed here: https://stackoverflow.com/questions/62929339/pip-install-find-links-search-order. It seems that when a version of a package is available both on PyPI and in a folder pointed to with --find-links, pip will prioritize the PyPI package.

It probably works with your local tests right now, because imas_core-5.6.1.dev4-cp311-cp311-linux_x86_64.whl has a newer version than is available on PyPI...

[prasad-sawantdesai]

The problem (and why I submitted #21) was because Bartek Palak wanted to use the easybuild config for a released version of imas-core on the EF Gateway. It would download the Python package from PyPI instead of the just-built python package during the install step.

The problem is listed here: https://stackoverflow.com/questions/62929339/pip-install-find-links-search-order. It seems that when a version of a package is available both on PyPI and in a folder pointed to with --find-links, pip will prioritize the PyPI package.

It probably works with your local tests right now, because imas_core-5.6.1.dev4-cp311-cp311-linux_x86_64.whl has a newer version than is available on PyPI...

Thanks @maarten-ic

[prasad-sawantdesai]

Here, --no-deps is added to the pip install step so pip installs only the local package and does not try to install runtime dependencies from the dist/ folder when using isolation. This matches the build step, which also uses --no-deps.