Update coremltools dependency to 4.0. Python 3.8 error

[Vozf]

current pip version requires coremltools 3.3.

[Vozf]

As I understand currently it can't be installed on python 3.8 as coremltools must be >=4.0 for python 3.8 and turicreate requires coremltools 3.3 which is not available for python 3.8

[Vozf]

Ok, I'm not sure what the problem anymore
I'm using poetry and python 3.8 and ubuntu 20

poetry add turicreate

results in

Using version ^6.4.1 for turicreate

Updating dependencies
Resolving dependencies... (0.8s)

Writing lock file

Package operations: 16 installs, 0 updates, 0 removals

  • Installing llvmlite (0.31.0)
  • Installing astunparse (1.6.3)
  • Installing flatbuffers (1.12)
  • Installing gast (0.3.3)
  • Installing google-pasta (0.2.0)
  • Installing h5py (2.10.0)
  • Installing keras-preprocessing (1.1.2)
  • Installing numba (0.49.1)
  • Installing opt-einsum (3.3.0)
  • Installing tensorflow-estimator (2.4.0)
  • Installing termcolor (1.1.0)
  • Installing coremltools (3.3): Failed

  RuntimeError

  Unable to find installation candidates for coremltools (3.3)

  at ~/.poetry/lib/poetry/installation/chooser.py:72 in choose_for
       68│ 
       69│             links.append(link)
       70│ 
       71│         if not links:
    →  72│             raise RuntimeError(
       73│                 "Unable to find installation candidates for {}".format(package)
       74│             )
       75│ 
       76│         # Get the best link

but if install via github assets release link, it works fine

 poetry add https://github.com/apple/turicreate/releases/download/6.4.1/turicreate-6.4.1-cp38-cp38-manylinux1_x86_64.whl

Updating dependencies
Resolving dependencies... (56.8s)

Writing lock file

Package operations: 5 installs, 0 updates, 0 removals

  • Installing mpmath (1.1.0)
  • Installing attr (0.3.1)
  • Installing sympy (1.7.1)
  • Installing coremltools (4.0b3)
  • Installing turicreate (6.4.1 https://github.com/apple/turicreate/releases/download/6.4.1/turicreate-6.4.1-cp38-cp38-manylinux1_x86_64.whl)

[TobyRoseman]

It looks like you're using poetry. I believe that is the issue. poetry doesn't seem to like the way TuriCreate handles dependencies, see #3342.

In a fresh virtual environment (without using poetry), I just tried installing the latest turicreate then upgrading to the lasted version of coremltools. It worked fine.