blender-pip

What does it do ?

Allow easy pip modules setup

Common issues with pip module setup

• Global python site packages folder is likely to be read only
• Break your software by setting up dependency, overriding stock modules
• System may not be able to build modules

Solutions

• Setup into user site package
• Never install deps (you have to handle your deps by hand)
• Only download and install from wheels

By default Pip class use -user --only-binary all --no-deps options to call pip.

Usage

Basic methods

Pip.install("scipy==1.2.1")
Pip.uninstall("pyproj==2.1.3")

Upgrade pip

Pip.upgrade_pip()

Dependency check

You have to check for your modules dependency, and setup by hand according your needs.
Also ensure there are wheels available for all target platforms.

python_version = Pip.python_version()
if python_version.minor == 6:

Setup modules

see https://pip.pypa.io/en/stable/reference/pip_install/

Pip.install("scipy==1.2.1")
Pip.install("pyproj==2.1.3")
Pip.install("Pillow==6.0.0")

# Sample usage in a blender operator

def execute(self, context):
    # Pyside2 require shiboken
    # override default options to skip --no-deps
    # we may setup both by hand instead
    res, msg = Pip.install("pyside2", "--user  --only-binary all")
    if res:
        status = {'SUCCESS'}
    else:
        status = {'ERROR'}
    self.report(status, msg) 
    return {'FINISHED'}

Advanced options

Raw pip calls using static _cmd method

Pip()._cmd("install", options, module)

Integration into addons

From version 2.83, blender will no more expose user site-package in path. Ensure user site package method detect site package and add to sys.path when missing. Call this method from your init, before custom module(s) import

Pip.ensure_user_site_package()

Manual setup of modules

In blender python console

from blender_pip import Pip
Pip.install("module_name=version")