`update` fetches the latest release tag from the GitHub API (or takes
--version), downloads the cross-platform python zipapp, and installs it
into archivr's state dir. The install is atomic — staged as yt-dlp.new,
chmod +x'd, then renamed over the target — so a concurrently running
capture never sees a half-written binary. A sibling .version file makes a
repeat update a no-op instead of a 3MB re-download.
The download is checked for the python3 shebang before install, which
catches the usual failure mode of getting an HTML error page back. python3
itself is only warned about, not required: the server may run under a nix
wrapper with its own PATH.
`status` prints all three candidates (env / state-dir / PATH fallback) with
their versions and stars whichever the resolver picks, so it is obvious
which yt-dlp a capture will actually use.
reqwest is pulled from the existing workspace dependency; the GitHub JSON is
parsed with serde_json so the "json" feature is not needed.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
The flake no longer takes yt-dlp from nixpkgs; a dedicated `ytDlp`
derivation fetches the upstream release binary directly and pins both
`version` and an SRI `hash`. That makes the previous workflow inert: it
ran `nix flake update nixpkgs` and compared `nixpkgs#yt-dlp.version`
before and after, so it could churn the lockfile forever without ever
moving the version we actually ship.
The workflow now reads the pinned version straight out of the `ytDlp`
block in flake.nix, asks the GitHub API for yt-dlp's latest release tag,
short-circuits when they already match, downloads the new release to
recompute its SRI hash (required — the hash is part of the derivation's
identity, so the URL cannot be changed alone), and rewrites the three
pinned fields under a sed range address scoped to that block so sibling
pins like ublockLite and isdcac are untouched. It asserts only flake.nix
changed and that the new version appears exactly twice before opening
the PR.
