omh 0.5.0

Launch any coding harness, in a sandbox, with your setup already there.
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# Python.
#
# No `measured` on either provide: nobody has taken those numbers, and this
# file would rather say nothing than say something typed. The rule that a
# measurement *present* must be one somebody could have taken is enforced by
# `every_provide_states_its_case`; the rule that one must exist is not, so that
# a stack can be contributed by somebody who works in the ecosystem and has no
# way to run an image build.

name   = "python"
marker = "pyproject.toml"

[[provide]]
name    = "runtime"
needs   = ["python3", "pip3"]
install = "apt-get update && apt-get install -y --no-install-recommends python3 python3-pip python3-venv && rm -rf /var/lib/apt/lists/*"
because = "the base image is a node image and ships no python at all, so nothing in the project can be run"

# Separate from the runtime because they fail separately: a repo can have a
# working python and no test runner, and the report should say which.
[[provide]]
name    = "tools"
needs   = ["pytest", "ruff"]
install = "pip3 install --break-system-packages --no-cache-dir pytest ruff"
because = "pytest runs the tests and ruff formats; neither ships with python"