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[esp32] Skip downloading precompiled Arduino libs

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Create a stub package for framework-arduinoespressif32-libs to avoid
downloading ~2GB of precompiled libraries that aren't needed when
building from source.

The stub contains minimal package.json and tools.json files that
satisfy PlatformIO's package manager without the actual library
contents. The version is derived from the IDF version.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
Jonathan Swoboda
2026-02-05 04:20:44 -05:00
co-authored by Claude Opus 4.5
parent 2541ec1565
commit 7223a1bac8
1 changed files with 23 additions and 0 deletions
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esphome/components/esp32/__init__.py
+23
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@@ -1132,6 +1132,20 @@ async def _write_exclude_components() -> None:
)
@coroutine_with_priority(CoroPriority.FINAL)
async def _write_arduino_libs_stub(stubs_dir: Path, idf_ver: cv.Version) -> None:
"""Write stub package to skip downloading precompiled Arduino libs."""
stubs_dir.mkdir(parents=True, exist_ok=True)
write_file_if_changed(
stubs_dir / "package.json",
f'{{"name":"framework-arduinoespressif32-libs","version":"{idf_ver.major}.{idf_ver.minor}.{idf_ver.patch}"}}',
)
write_file_if_changed(
stubs_dir / "tools.json",
'{"packages":[{"platforms":[{"toolsDependencies":[]}],"tools":[]}]}',
)
@coroutine_with_priority(CoroPriority.FINAL)
async def _add_yaml_idf_components(components: list[ConfigType]):
"""Add IDF components from YAML config with final priority to override code-added components."""
@@ -1241,6 +1255,15 @@ async def to_code(config):
"platform_packages",
[_format_framework_espidf_version(idf_ver, None)],
)
# Use stub package to skip downloading precompiled libs
stubs_dir = CORE.relative_build_path("arduino-libs-stub")
cg.add_platformio_option(
"platform_packages",
[
f"pioarduino/framework-arduinoespressif32-libs@file://{stubs_dir}"
],
)
CORE.add_job(_write_arduino_libs_stub, stubs_dir, idf_ver)
# ESP32-S2 Arduino: Disable USB Serial on boot to avoid TinyUSB dependency
if get_esp32_variant() == VARIANT_ESP32S2: