Two issues on Debian 13 (Trixie):
1. apt's sequoia GPG backend now rejects SHA-1 signatures, and the OpenResty
repo signing key is still SHA-1 — so `apt-get update` fails to verify the
repo. When /usr/share/apt/default-sequoia.config is present (Debian 13+),
install a back-end override that extends the SHA-1 acceptance window to
2028 (the OpenResty key is expected to rotate to a stronger algorithm;
revisit before then). No-op on older Debian/Ubuntu. Idempotent on re-run.
2. The repo path was hardcoded to /package/ubuntu with the host codename,
which worked on older Debian by coincidence. trixie lives under
/package/debian, so pick the tree by distro ID (debian -> /package/debian,
else -> /package/ubuntu).
docs/installation.md: mirror both changes in the manual install steps, with a
note that install.sh applies the sequoia override automatically.
Co-authored-by: Claude <noreply@anthropic.com>
wmantly
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