Rule one at the top of this document says to record an election so it is not
re-litigated, and three dependencies in continuum-proxy had never had theirs
written down. All three already passed `cargo deny check licenses`; the point
is that a grep for "GPL" turns up an answer instead of an argument.
- `unescaper` 0.1.10 is `MIT OR GPL-3.0-only`, reached through
tokio-serial -> serialport, so it is genuinely in the Linux build.
- `r-efi` 6.0.0 offers LGPL-2.1-or-later as one of three options, but only
compiles for UEFI targets - noted because the next person to grep will
find it and should not have to work that out again.
- `serialport` 4.10.0 is MPL-2.0, which the table allows because the
copyleft is per-file. That holds only while we do not edit its files, so
the condition is now written next to the permission.
Also records the eight crates added to continuum-proxy on 2026-10-15 for
reading `.3mf` archives, and why the zip feature set is deflate-only: the
other codec features pull in bzip2, lzma/xz and zstd bindings, each another
licence to check for no benefit.
Verified from `cargo metadata` and `cargo tree --invert`, not from memory.
Continuum is intended to be sold, so every dependency has to permit
distribution in closed-source commercial software. Nothing recorded that
before: our own crates and npm packages carried no licence field at all,
which made `cargo deny` report them as `unlicensed` errors and left the
actual policy nowhere.
docs/LICENSES.md is the policy and lives here because it is the repo both
other tiers already depend on. It covers the allow/deny list, the
2026-09-17 audit of all six repos (no copyleft reaches any binary), and
the three categories `cargo deny` structurally cannot see: external
binaries we spawn or ship, ML model weights, and self-hosted server
software whose licence is not its client library's.
Two findings in there are worth more than the tooling: Redis 7.4+ is
RSALv2/SSPL and 8.0+ adds AGPLv3, and Ultralytics YOLO and Obico's
print-failure model are both AGPL-3.0 - the obvious choice in each case
is the one we cannot ship.
Crates declare `LicenseRef-Proprietary` with `publish = false`; that
string is deliberately not valid SPDX so it must never enter an allow
list. npm packages use `"license": "UNLICENSED"`.
octoturge