headroom/crates
chopratejas 6f2c0a8400 fix(ci): rustls-everywhere — eliminate openssl-sys from build tree
# Root cause of the wheel-build cascade

We have shipped 5 release-pipeline hot-fixes in 12 hours, each
addressing a different symptom of the same architectural problem:

1. PR #363 — npm artifact downloads + tried `yum openssl-devel`
2. PR #367 — vendored OpenSSL in `headroom-proxy` + dropped Intel mac
3. PR #369 — Debian-cross perl install (`perl` not `libipc-cmd-perl`)
4. PR #370 — moved `openssl/vendored` from headroom-proxy to headroom-py
5. (this PR) — ELIMINATE OpenSSL entirely

Each fix exposed a different missing system package or feature flag in
a different build surface (manylinux x86_64 vs aarch64-cross-Debian vs
macOS Intel vs e2e/wrap Dockerfile vs e2e/init Dockerfile vs main
Dockerfile vs devcontainer). We were playing whack-a-mole because every
Cargo dep change to the OpenSSL surface required matching system-package
updates in 6+ different Dockerfiles and workflows, and the PR-level CI
didn't exercise all of them.

# Why this PR is the structural fix

`fastembed` exposes clean rustls feature flags:
- `hf-hub-rustls-tls`               (replaces default `hf-hub-native-tls`)
- `ort-download-binaries-rustls-tls` (replaces default `…native-tls`)

By disabling fastembed's default features and enabling the rustls
variants explicitly, we remove `native-tls` (and therefore `openssl-sys`,
`openssl`, `openssl-src`, perl modules, OpenSSL build-time deps,
vendored OpenSSL ~30s build cost) from the entire workspace dep tree.

Verified locally:

    $ cargo tree -p headroom-py -i openssl-sys
    error: package ID specification `openssl-sys` did not match any packages

    $ cargo tree -p headroom-py -i native-tls
    error: package ID specification `native-tls` did not match any packages

    $ cargo build --release -p headroom-py
    Finished `release` profile [optimized] target(s) in 25.57s

(Down from 1m+ with vendored OpenSSL.)

# Cleanups enabled by this change

- crates/headroom-py/Cargo.toml — dropped the `openssl/vendored`
  workaround from PR #370.
- crates/headroom-proxy/Cargo.toml — same dep removed.
- e2e/wrap/Dockerfile — dropped `yum install openssl-devel pkgconfig
  perl-IPC-Cmd`. Comment retained explaining why.
- e2e/init/Dockerfile — same.
- Dockerfile (main) — dropped `pkg-config libssl-dev` from apt-get.
- .devcontainer/Dockerfile — dropped `pkg-config libssl-dev`.
- .github/workflows/release.yml — removed the entire before-script-linux
  block (perl install probe + multi-package-manager dispatch + fail-loud
  assertion). No longer needed.

# Regression gate

Three new structural tests in tests/test_release_workflows.py:

- test_no_openssl_sys_in_wheel_build_tree — runs `cargo tree -p <crate>
  -i openssl-sys` for headroom-py / headroom-proxy / headroom-core. If
  openssl-sys reappears (a future native-tls enabler creeping in via a
  new dep), this fails AT PR TIME with an actionable message.
- test_no_native_tls_in_wheel_build_tree — same shape, native-tls is
  the proximate cause.
- test_fastembed_uses_rustls_features — checks the Cargo.toml so a
  future "let me bump fastembed and forget the features" doesn't
  silently re-introduce OpenSSL.

Plus two cleanup gates:
- test_dockerfiles_no_longer_install_openssl_devel
- test_release_yml_does_not_install_openssl_or_perl_for_wheels

All 13 release-workflow tests pass. `make ci-precheck` PASSED.

# What this teaches us about rollouts (per user's ultrathink ask)

The 5-fix cascade exposed three meta-problems:

1. PR checks don't block merges. PR #370 had docker-init-e2e,
   docker-wrap-e2e, docker-native-e2e all FAILED yet got merged.
   Branch protection should require these checks. Operator action
   needed (cannot fix in code).

2. Local validation is misleading. `cargo build -p headroom-py` from
   the workspace root used the workspace lockfile and looked green;
   CI did fresh resolution against headroom-py's manifest alone where
   the feature wasn't enabled. Lesson: verify structural invariants
   with `cargo tree -e features` before trusting that a build "works."

3. 6+ build surfaces with independent system-dep state. Every Cargo
   change required matching updates in 6 places. The structural answer
   (this PR) is to NOT depend on system OpenSSL at all. Where structural
   fixes are not possible, the answer is a single shared
   scripts/install-rust-build-deps.sh — but with this PR there's
   nothing left to install.
2026-05-03 23:26:04 -07:00
..
headroom-core fix(ci): rustls-everywhere — eliminate openssl-sys from build tree 2026-05-03 23:26:04 -07:00
headroom-parity fix: B1 — retire ICM, RollingWindow, scoring, relevance + dependents 2026-05-02 12:23:17 -07:00
headroom-proxy fix(ci): rustls-everywhere — eliminate openssl-sys from build tree 2026-05-03 23:26:04 -07:00
headroom-py fix(ci): rustls-everywhere — eliminate openssl-sys from build tree 2026-05-03 23:26:04 -07:00