The registry response already carries each package file's size, so the
combined bar is sized from URLSource instead of a HEAD sweep; the probe,
its all-or-nothing fallback, and its duplicate Content-Length parsing are
gone, and archives without a reported size simply stay on the sequential
path. run_batch_downloads now takes (name, size, fetch) jobs and builds
the (now private) progress bar itself, collecting failures from future
results instead of a shared list; both call sites use functools.partial
instead of lambda factories. The prefetch touches only URLSource, so the
progress parameter comes off Source/Git/Local/ConvertedLibrary, and the
wave prefetch is wrapped best-effort like its ESP-IDF twin, which also
dedupes by dest only after the verifiability check. ProgressBar.done()
itself now skips the newline when no frame was drawn or the 100% frame
already ended the line, collapsing the batch wrapper's guard and fixing
the stray blank line after OTA uploads.
cancel_futures only drops queued jobs, and the non-daemon workers are
joined at interpreter exit, so a Ctrl-C during the ESP-IDF toolchain
fetch waited out every in-flight archive. The tracker each job reports
through now checks a cancellation flag set when the wait raises, so
downloads abort at their next progress tick and the resumable .part
files keep the bytes already fetched.
The wave-deferral test stubs _content_lengths instead of issuing real
HEAD requests that passed only by failing, the dead hasattr branch in
the HEAD-probe test is gone, and the .C suffix comment names the SCons
divergence instead of claiming parity.
J. Nick Koston