The repository defines Bazel installation rules for multi-platform Python lock files. The major difference to pip rules in rules_python is that Python packages are installed as py_library targets and not as external repositories. This allows to use platform information of resolved Python toolchains and build cross-platform Python artifacts.

Minimum requirements:

• Bazel 8.x and rules_python with registered Python >= 3.11 toolchain.

A lock file in the workspace can be updated using a host Python interpreter as

python3 -m pip install poetry

poetry update

or using a pre-defined target

load("@ofiuco//python:poetry.bzl", "poetry_lock")

poetry_lock(
    name = "lock",
    toml = "pyproject.toml",
    lock = "poetry.lock",
)

In both cases the host interpreter is used in the latter case poetry package with dependencies is installed as an external repository.

To import ofiuco in your project, you first need to add it to your MODULE.bazel file

bazel_dep(name = "rules_python", version = "1.8.0-rc1")

python = use_extension("@rules_python//python/extensions:python.bzl", "python")
python.toolchain(python_version = "3.13")
use_repo(python, "python_3_13")

bazel_dep(name = "ofiuco", version = "0.8.0")

parse = use_extension("@ofiuco//python:extensions.bzl", "parse")
parse.lock(
    name = "python",
    lock = "@//path/to:poetry_or_uv.lock",
    toml = "@//path/to:pyproject.toml",
)
use_repo(parse, "python")

and Python dependencies can be used as

py_library(
    name = "mylib",
    srcs = ["mylib.py"],
    deps = [
        "@python//:package1",
        "@python//:package2",
    ]
)

or to include all Python dependencies you can use :all synthetic target as

py_library(
    name = "mylib",
    srcs = ["mylib.py"],
    deps = [
        "@python//:all",
    ]
)

If all is a legit package name then the synthetic target will have one or more underscores to disambiguate names.

cargo install --git https://github.com/bazel-contrib/multitool
fish_add_path $HOME/.cargo/bin

multitool --lockfile python/private/uv.lock.json update

1. Install Scoop https://github.com/ScoopInstaller/Install?tab=readme-ov-file#for-admin

irm get.scoop.sh -outfile 'install.ps1'
.\install.ps1 -RunAsAdmin

2. Install git and emacs

scoop install git
scoop bucket add extras
scoop install grep emacs bazelisk zip unzip python vcredist2022 WinDirStat
scoop bucket add milnak https://github.com/milnak/scoop-bucket
scoop install milnak/windbg

3. Instal VisualStudio build tools

# Source - https://stackoverflow.com/a
# Posted by caiohamamura, modified by community. See post 'Timeline' for change history
# Retrieved 2025-12-31, License - CC BY-SA 4.0

winget install Microsoft.VisualStudio.2022.BuildTools --force --override "--wait --passive --add Microsoft.VisualStudio.Component.VC.Tools.x86.x64 --add Microsoft.VisualStudio.Component.Windows10SDK"

4. Set Python files associations cmd /c assoc .py=Python.File cmd /c assoc .pyz=Python.File cmd /c ftype Python.File="C:\Users\Administrator\scoop\apps\python\current\python.exe" "%1" %*

winget install Microsoft.VisualStudio.2022.BuildTools

5. Checkout ofiuco

git clone git://[email protected]/oxidase/ofiuco/ cd ofiuco bazelisk test //...