Mina Package Structure

Mina is a "modular subpackaging" implementation based on pdm-backend.

Mina is also an implementation of the Mina Package Structure, which is a unique specification with the following features:

The entire project is treated as a workspace environment, and the dependency tree used by all subpackages is managed uniformly through existing facilities;
Subpackages declare their own information and dependencies referenced in the workspace;
Patching the Metadata read by the pdm-backend build release to reuse its build process;
Avoids some potential problems by providing a complete build backend for PEP-517.

Mina provides a PEP-517 implementation called mina-build, It also provides a simple CLI implementation as the PDM Plugin;

mina-build only works when the package to be packaged is defined, Otherwise the behavior is the same as pdm-backend.

The CLI does provide a pdm mina build <package> command, but you can also specify the package to be packaged via the environment variable MINA_BUILD_TARGET or by setting mina-target in config-setting.

Quick Start

Installing the CLI

At the moment, Mina only supports pdm as the main user function entry, but perhaps poetry will be supported later?

elaina@localhost $ pipx inject pdm pdm-mina
# or pdm
elaina@localhost $ pdm self add pdm-mina

Or specify in pyproject.toml:

[tool.pdm]
plugins = ["pdm-mina"]

Then run:

elaina@localhost $ pdm install --plugins

This will enable pdm-mina plugin in the current project.

Introduce mina-build

Configure the following in the project pyproject.toml:

[build-system]
requires = ["mina-build>=0.2.5"]
build-backend = "pdm.backend"

Edit pyproject.toml

Suppose you have the following directory structure:

mina-example/
├── avilla/
│ ├── core/
│ │ └── __init__.py
│ ├── io/
│ │ └── __init__.py
│ ├── onebot/
│ │ └── __init__.py
│ └── elizabeth/
│ └── __init__.py
└── pyproject.toml

If you need to publish these modules, or subpackages, under avilla as multiple packages, you can do it easily with Mina, For example, in the above case we can declare a sub-package in pyproject.toml by filling in the following configs:

[tool.mina.packages."core"]
[tool.mina.packages."io"]
[tool.mina.packages."onebot"]
[tool.mina.packages."elizabeth"]

The declaration of subpackages for Mina follows PEP-621. Here we take the example of the configuration subpackage core.

[tool.mina.packages."core"]
includes = [
    "avilla/core"
]
# Equivalent to tool.pdm.includes, I don't know what happens if you leave it out, it's probably just the normal case - packing the module that name refers to.

# override = false

[tool.mina.packages."core".project]
name = "avilla-core" # the name of the subpackage on `pypi`, required
description = "..."
authors = ["..."]
version = "0.1.0" # version, not guaranteed to support dynamic fetching (as I haven't used it or tried it)
requires-python = ">=3.9"
dependencies = [ # Suggest filling in
    "aiohttp", # Although the `PEP-508` specification is used here, all packages will be redirected to the same name in project.dependencies.
    "starlette",
    "pydantic"
]
optional-dependencies = {
    "amnesia": ["graia-amnesia"] # example of optional dependencies
}
entry-points = {pdm = {mina = "mina.plugin:ensure_pdm"}} # entry-points declaration method

Once filled in, you can simply check it via the CLI's pdm mina list, or test it directly with pdm mina build <pkg>;

Building a release package

Use pdm mina build <pkg> to build the corresponding sub-packages.

If you wish, you can use pdm mina build -a/--all to build all the subpackages at once.

It is recommended to use twine + keyring to publish to PyPI, but of course pdm-publish, or use Github Actions is also possible.

Overriding the workspace configuration

If you wish, you can have Mina use an override workspace configuration to get the Project Spec when processing and injecting subpackaged project definitions; this feature is not enabled by default:

[tool.mina]
override-global = true # Enable this feature globally

[tool.mina.packages."core"]
override = true # Enable this feature only in core subpackages

Open source license

This project is open source using the MIT.

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