generate hashes

[graingert-coef]

Fixes #279

[graingert-coef]

ah this fails with:

1.415 Collecting pip-with-requires-python (from -r requirements/runtime-prerequisites.in (line 1))
1.554 
Notice: 1.554 [notice] A new release of pip is available: 24.2 -> 24.3.1
Notice: 1.554 [notice] To update, run: pip install --upgrade pip
1.555 ERROR: In --require-hashes mode, all requirements must have their versions pinned with ==. These do not:
1.555     pip-with-requires-python from https://files.pythonhosted.org/packages/d5/39/0a19612d2822d785f5c22e6042ac0a6af10f99772db751e244d1201f613f/pip_with_requires_python-1.0.1-py2.py3-none-any.whl (from -r requirements/runtime-prerequisites.in (line 1))

[webknjaz]

Duplicate of #248

[webknjaz]

This is actually auto-activated when constraint or requirements files have at least one hash. But the problem is that the modern depresolver in pip has a bug that prevents us from using this feature: pypa/pip#9243. I keep hoping I'll get to fixing it upstream one day. You can give it a try if you want, though.