`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.
The nix flake wrapper pins a yt-dlp via ARCHIVR_YT_DLP, but yt-dlp rots
fast — extractors break within weeks of a pin. Add a resolver that probes
`--version` on both the pinned binary and a user-installed copy under the
mutable state dir, and runs whichever is newer.
Version strings are YYYY.MM.DD, so plain string ordering is chronological.
Ties resolve toward the state dir: a user who installed it there did so
deliberately. ARCHIVR_YT_DLP_FORCE bypasses the comparison entirely, and
with no candidate at all we fall back to bare `yt-dlp` on PATH — exactly
the previous behaviour.
Resolution is cached in a OnceLock so `--version` costs one subprocess per
process, and all four inline env::var lookups now go through it.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Two independent problems, one commit:
1. Stale binary. nixpkgs-provided `pkgs.yt-dlp` on the pinned
nixos-unstable rev is 2026.03.17 (Mar 2026). yt-dlp itself
releases days-to-weeks, and YouTube frequently rotates the
player-signature / client surfaces the older builds request
(`android_vr` is the current casualty), which returns HTTP 403
mid-download for the format specs archivr passes (`-f
bestvideo+bestaudio/best`). Even bumping the nixpkgs input would
leave us dependent on that channel's yt-dlp cadence.
Fetch the upstream zipapp directly instead
(github.com/yt-dlp/yt-dlp/releases/download/<ver>/yt-dlp), wrap so
`python3` and `ffmpeg` are on PATH, and pin version+hash in one
place. Bumping is: change version, replace hash from
`nix hash file <url>`.
2. Missing pin in server wrapper. `archivr-cli` was already wrapped
with `--set ARCHIVR_YT_DLP` + a PATH prefix; `archivr-server`
was NOT — it only pinned single-file, chrome, and the tweet
scraper, silently falling back to whatever `yt-dlp` the user
happened to have on PATH. Server captures therefore inherited
the user's (often stale) system yt-dlp regardless of the flake
pin. Same wrapper flags now apply to both binaries.
devShell keeps `pkgs.yt-dlp` for now: the dev shell is a
convenience, not a release surface, and matching wouldn't fit in this
commit without duplicating the derivation across let-scopes.
