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Crunch docs, remove examples

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These identifiers should be considered opaque.

Signed-off-by: William Woodruff <william@yossarian.net>
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William Woodruff
2026-09-03 15:38:50 -04:00
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@@ -18,25 +18,12 @@ This allows directly using it in later steps:
By default, the venv is created at `.venv` inside the `working-directory`.
With `activate-environment: true`, the `python-runtime-id` output identifies the
venv's Python runtime using its implementation, full Python version (including
prerelease numbers), and whether the interpreter was built for free threading.
For implementations other than CPython, it also includes the implementation's own
version, so upgrading PyPy changes the identifier even if its Python version stays
the same.
venv's Python runtime. This is an opaque identifier that users of the action
can use as a cache key if necessary; users should not assume anything about
the stability or structure of the identifier itself.
Example identifiers:
| Runtime | `python-runtime-id` |
| --- | --- |
| CPython RC1 | `cpython-3.15.0rc1` |
| Free-threaded CPython RC1 | `cpython-3.15.0rc1-freethreaded` |
| Free-threaded CPython RC2 | `cpython-3.15.0rc2-freethreaded` |
| PyPy | `pypy-7.3.23-python-3.11.15` |
This is an opaque identifier in a setup-uv-defined format, not a Python version
specifier. Use the whole value as a cache-key component rather than parsing it.
Combine it with the platform and dependency information relevant to your cache,
for example (with `id: setup-uv` on the setup step):
For example, you can combine it with the platform and dependency information relevant to
your cache with `id: setup-uv` on the setup step:
```yaml
key: build-${{ runner.os }}-${{ runner.arch }}-${{ steps.setup-uv.outputs.python-runtime-id }}-${{ hashFiles('uv.lock') }}