new(zsync.moria.org.uk): zsync — rsync-style transfer over plain HTTP#13115
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tannevaled wants to merge 2 commits into
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new(zsync.moria.org.uk): zsync — rsync-style transfer over plain HTTP#13115tannevaled wants to merge 2 commits into
tannevaled wants to merge 2 commits into
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Original C reference implementation of zsync (Colin Phipps, Artistic-2.0) — a one-sided rsync-style protocol that does the rolling-checksum matching on the client and pulls only the differing blocks from any plain HTTP server. Ships zsyncmake (build .zsync metadata) and zsync (delta-download a target file). Builds the bundled tarball at zsync.moria.org.uk; pinned to -std=gnu89 plus _DARWIN_C_SOURCE/_GNU_SOURCE so the K&R-style bundled zlib and the timegm() call compile under recent clang in default-strict mode.
The upstream tarball bundles config.guess/config.sub timestamped 2009-06-10, which predates the aarch64 triplet, so configure bails out on linux/aarch64 with 'cannot guess build type; you must specify one'. Drop in current FSF copies (same fix Debian's dh-autoreconf applies).
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Adds zsync, the original C reference implementation (Colin Phipps, Artistic-2.0). zsync is a one-sided rsync-style protocol: the client does the rolling-checksum matching locally and pulls only the differing blocks from any plain HTTP server — no special server-side tooling required.
Ships:
The recipe targets the upstream tarball at zsync.moria.org.uk (currently 0.6.4, released 2026-05-14); the same source line Debian/Ubuntu's `apt-get install zsync` ships. Two CFLAGS workarounds are needed under recent clang in default-strict mode:
Both are inline-documented in the recipe. Built and tested locally (darwin/aarch64); the test verifies version banner + `zsyncmake` generates a valid `.zsync` metadata file.
Refs: zsync.moria.org.uk, homebrew/zsync (which packages a Go fork — this recipe sticks with the canonical C reference).