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Blender Cloud - Part B

Step 1: Install Git Repos

Reference: Blender-Cloud readme

If you haven't already, copy the Git repositories.
Please note: There are some Git repositiories for Flamenco on GitHub that are out of date. Use the links below.

git clone git://git.blender.org/pillar-python-sdk.git
git clone git://git.blender.org/pillar.git
git clone git://git.blender.org/attract.git
git clone git://git.blender.org/flamenco.git
git clone git://git.blender.org/pillar-svnman.git
git clone git://git.blender.org/blender-cloud.git

Step 2: Poetry

Reference: docker/3_buildwheels/build.sh

A Python interpreter must be set up with the appropriate dependencies. In order to avoid conflicts with other dependency versions, Python uses Poetry, which is a wrapper for a virtual environment. Virtual environments are ways to isolate Python distributions on a machine. While they can be very helpful, they can also be convoluted. If you run into trouble with a module that you expect to be installed, it’s likely a problem with virtual environments. It can sometimes be a good idea to uninstall then reinstall Poetry and/or virtualenv in order to get the appropriate compiler working.

pip3 install wheel poetry==1.0
cd blender-cloud
poetry install --no-dev

Poetry may fail due to the cryptography module. It may require a rust installation. As of this writing (Feb-22-21), this can be by-passed with the following environment variable:
export CRYPTOGRAPHY_DONT_BUILD_RUST=1

To be able to install cryptography for Poetry, we need to run the following: sudo apt-get install build-essential libssl-dev libffi-dev python3-dev cargo

After this, in the Pillar directory, run: poetry run pip install -e .

Step 3: Wheelhouse Configuration

Reference: docker/3_buildwheels/build.sh

Blender-Cloud uses two different “wheel” programs. Python3 or Pip3 wheel is a system that installs dependencies. “Wheelhouse” is a content management system. In this next step we use Pip’s “wheel” to install “wheelhouse."

Poetry expects setup.py files and will not work without them. To get around this, we need to create a requirements.txt. To do this, run the following command:
poetry run pip3 freeze | grep -v '\(pillar\)\|\(^-[ef] \)' > requirements.txt

When you've created a requirements file, you can run:
pip3 wheel --wheel-dir=/data/wheelhouse -r requirements.txt

After that, we can set up some environment variables.

export WHEELHOUSE=/data/wheelhouse
export PIP_WHEEL_DIR=/data/wheelhouse
export PIP_FIND_LINKS=/data/wheelhouse
mkdir -p $WHEELHOUSE

When you have completed this step, you are ready to move on to running the necessary backend programs.