Bazel rules to enable use of uv to compile pip requirements and generate virtual envs.

Usage

Installing with bzlmod, add to MODULE.bazel (adjust version as appropriate):

bazel_dep(name = "rules_uv", version = "<version>")

pip_compile

Create a requirements.in or pyproject.toml -> requirements.txt compilation target and diff test:

load("@rules_uv//uv:pip.bzl", "pip_compile")

pip_compile(
    name = "generate_requirements_txt",
    requirements_in = "//:requirements.in", # default
    requirements_txt = "//:requirements.txt", # default
)

Run the compilation step with bazel run //:generate_requirements_txt.

This will automatically register a diff test with name [name]_diff_test.

create_venv

Create a virtual environment creation target:

load("@rules_uv//uv:venv.bzl", "create_venv")

create_venv(
    name = "create_venv",
    requirements_txt = "//:requirements.txt", # default
)

Create a virtual environment with default path venv by running bazel run //:create_venv. The generated script accepts a single, optional argument to define the virtual environment path.

The created venv will use the default Python 3 runtime defined in rules_python.