registry_download memoizes per process (failures uncached), so the
prefetch and the install share one metadata round-trip per package.
The idf ccache env always hands idf.py exactly one canonical spelling:
the no-ccache path exports 0 so an unparsable inherited value or a
probe-rejected shim cannot enable it, the enabled path exports 1
whatever accepted spelling arrived, and forced-on still runs the
resolver for its no-binary warning. An empty env value keeps its
historical disable meaning instead of falling to the default policy.
file["system"] normalized None and str but let an int or dict fall
through to the in test, where an int raises TypeError and a dict
becomes a key test; both now raise the same Unexpected-response error
as the other shape guards.
shell_token now picks the quoting style per platform: single quotes on
POSIX (sh expands nothing inside them, so backslash runs, $VAR, and
backticks reach the compiler exactly as lexed, matching SCons's
no-shell spawn) and the CreateProcess argv rule on Windows. A test
round-trips every case through a real /bin/sh.
The ninja and ccache runnability probes collapse into one
tool_version_runs helper in framework_helpers. The registry names a
non-dict top-level payload like the inner guards, and the expect layout
check also runs on marker hits so a marked install that later lost
files fails by name. The ESP-IDF ccache gate defers to
resolve_ccache_path so ESPHOME_CCACHE_ENABLE=0 disables ccache there
too, with IDF_CCACHE_ENABLE still taking precedence.
Registry version and file entries that are not dicts now raise the same
Unexpected-response error as the other shape guards instead of an
AttributeError traceback. install_package rejects an empty expect so
every install is layout-validated before the marker is written.
ESPHOME_CCACHE_ENABLE values outside 1/true/yes/on and 0/false/no/off
warn and are treated as unset instead of bool(str) flipping them to
enabled. The strip_win_long_path_prefix test moved next to the function
in test_framework_helpers, and a stale comment naming its old module is
fixed.
J. Nick Koston