peeler 0.2.1

A tool to use a `pyproject.toml` instead of a `blender_manifest.toml` to build Blender add-ons

Peeler

Use a pyproject.toml file instead (or alongside) of the blender_manifest.toml required for building blender add-ons since Blender 4.2 .

Easily package a blender add-on without having to manually download dependencies wheels (and dependencies of dependencies !) and manually write theirs paths to blender_manifest.toml .

Installation

uv is needed to use the Wheels feature

If you don't have uv installed

Either install uv and run:

pip install peeler

Or install uv and peeler at once:

pip install peeler[uv]

If you're already a uv user

Peeler doesn't need to be added in your project dependencies, meaning you can use directly peeler as a tool:

uvx peeler [OPTIONS] COMMAND [ARGS]

Or install peeler without uv:

pip install peeler

Features

Manifest

Create a blender_manifest.toml from fields in a pyproject.toml

• Make sure to have a pyproject.toml with basic field values:

# pyproject.toml

[project]
name = "My Awesome Addon"
version = "1.0.0"

• Some meta-data are specific to Blender, such as blender_version_min, you can specify theses in your pyproject.toml file under the [tool.peeler.manifest] table, here's a minimal pyproject.toml working version:

# pyproject.toml

[project]
name = "My Awesome Addon"
version = "1.0.0"

[tool.peeler.manifest]
blender_version_min = "4.2.0"
id = "my_awesome_addon"
license = ["SPDX:0BSD"]
maintainer = "John Smith"
tagline = "My Add-on is awesome"

• Run peeler to create (or update) blender_manifest.toml:

peeler manifest /path/to/your/pyproject.toml /path/to/blender_manifest.toml

# created blender_manifest.toml

version = "1.0.0"
name = "My Awesome Addon"
schema_version = "1.0.0"
type = "add-on"
blender_version_min = "4.2.0"
id = "my_awesome_addon"
license = ["SPDX:0BSD"]
maintainer = "John Smith"
tagline = "My Add-on is awesome"

The manifest is filled with values from the pyproject [project], [tool.peeler.manifest] tables and default values.

To get a full list of values required or optional in a blender_manifest.toml visit https://docs.blender.org/manual/en/latest/advanced/extensions/getting_started.html#manifest

Wheels

Download the wheels needed to package your add-on using dependencies specified in your pyproject.toml, and write their paths to blender_manifest.toml

• In your pyproject.toml specify your dependencies:

# pyproject.toml

[project]
name = "My Awesome Addon"
version = "1.0.0"
requires-python = "==3.11"

# For instance rich and Pillow (the popular image manipulation module)

dependencies = [
    "Pillow==11.1.0",
    "rich>=13.9.4",
]

• Run peeler to downloads the wheels for all platforms:

peeler wheels ./pyproject.toml ./blender_manifest.toml

Your blender_manifest.toml will be updated with the downloaded wheels paths

# updated blender_manifest.toml

version = "1.0.0"
name = "My Awesome Addon"
schema_version = "1.0.0"
type = "add-on"
blender_version_min = "4.2.0"

# the wheels as a list of paths
wheels = [
    # pillow wheels for all platforms
    "./wheels/pillow-11.1.0-cp311-cp311-macosx_10_10_x86_64.whl",
    "./wheels/pillow-11.1.0-cp311-cp311-macosx_11_0_arm64.whl",
    "./wheels/pillow-11.1.0-cp311-cp311-manylinux_2_17_aarch64.manylinux2014_aarch64.whl",
    "./wheels/pillow-11.1.0-cp311-cp311-manylinux_2_17_x86_64.manylinux2014_x86_64.whl",
    "./wheels/pillow-11.1.0-cp311-cp311-manylinux_2_28_aarch64.whl",
    "./wheels/pillow-11.1.0-cp311-cp311-manylinux_2_28_x86_64.whl",
    "./wheels/pillow-11.1.0-cp311-cp311-musllinux_1_2_aarch64.whl",
    "./wheels/pillow-11.1.0-cp311-cp311-musllinux_1_2_x86_64.whl",
    "./wheels/pillow-11.1.0-cp311-cp311-win32.whl",
    "./wheels/pillow-11.1.0-cp311-cp311-win_amd64.whl",
    "./wheels/pillow-11.1.0-cp311-cp311-win_arm64.whl",

    # wheels for rich and its dependencies
    "./wheels/rich-13.9.4-py3-none-any.whl",
    "./wheels/markdown_it_py-3.0.0-py3-none-any.whl",
    "./wheels/mdurl-0.1.2-py3-none-any.whl",
    "./wheels/pygments-2.18.0-py3-none-any.whl"
]

Note that the dependencies of the dependencies of the specified in pyproject.toml are also downloaded, neat !

# pillow and rich dependency tree resolved from
# dependencies = [
#    "Pillow==11.1.0",
#    "rich>=13.9.4",
# ]

My Awesome Addon v1.0.0
├── pillow v11.1.0
├── rich v13.9.4
│   ├── markdown-it-py v3.0.0
│   │   └── mdurl v0.1.2
│   └── pygments v2.18.0

Authors

• Maxime Letellier - Initial work