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esphome/.github/actions/cache-sdk-nrf/action.yml
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YAML

name: Cache nRF Connect SDK
description: >
Resolve the pinned sdk-nrf version and cache the native sdk-nrf install
(west workspace, Zephyr SDK toolchain, python env) at ~/.esphome-sdk-nrf.
Every job that installs sdk-nrf natively (the nrf52 clang-tidy job and,
once the component tests build natively, their batches) shares one cache.
Callers must set env ESPHOME_SDK_NRF_PREFIX: ~/.esphome-sdk-nrf and have
the Python venv already restored.
inputs:
restore-only:
description: >
When "true", only restore -- never save the cache, even on dev. Use from
jobs that may not produce a complete install (e.g. a component batch
that fails mid-install), so a partial install is never written.
default: "false"
runs:
using: composite
steps:
- name: Resolve sdk-nrf and toolchain versions for cache key
# Both versions are pinned in code, not in any file that feeds the
# other cache keys, so resolve them explicitly. Keying on them means
# the cache invalidates when either is bumped (actions/cache never
# overwrites a key).
id: version
shell: bash
run: |
. venv/bin/activate
version=$(python -c '
from esphome.components.nrf52 import RECOMMENDED_SDK_NRF_VERSION
from esphome.components.nrf52.framework import TOOLCHAIN_VERSION
print(f"{RECOMMENDED_SDK_NRF_VERSION}-{TOOLCHAIN_VERSION}")')
echo "version=$version" >> "$GITHUB_OUTPUT"
# Mirror cache-esp-idf: only dev-branch runs write the shared cache (so it
# lives in the default-branch scope readable by all PRs); PRs are
# restore-only and never push multi-GB artifacts into their own scope.
- name: Cache nRF Connect SDK install (write on dev)
if: github.ref == 'refs/heads/dev' && inputs.restore-only != 'true'
uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
with:
path: ~/.esphome-sdk-nrf
# yamllint disable-line rule:line-length
key: ${{ runner.os }}-esphome-sdk-nrf-${{ steps.version.outputs.version }}-${{ hashFiles('esphome/components/nrf52/requirements.txt') }}
- name: Cache nRF Connect SDK install (restore-only off dev)
if: github.ref != 'refs/heads/dev' || inputs.restore-only == 'true'
uses: actions/cache/restore@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
with:
path: ~/.esphome-sdk-nrf
# yamllint disable-line rule:line-length
key: ${{ runner.os }}-esphome-sdk-nrf-${{ steps.version.outputs.version }}-${{ hashFiles('esphome/components/nrf52/requirements.txt') }}