This package is built from upstream Zig source plus the upstream zig-bootstrap
source bundle, shipped as an additional orig tarball.

Why this exists
---------------

Debian sponsorship review correctly rejected the earlier binary-repack
approach. Debian requires software to be built from source inside Debian
infrastructure, not repackaged from upstream binary releases.

Packaging model
---------------

The source package therefore uses:

 * the Zig source release as the main orig tarball
 * the upstream zig-bootstrap source bundle as `orig-bootstrap`

The `bootstrap/` component provides the LLVM, Clang, LLD, zlib, zstd, and
bootstrap build harness that upstream uses to build Zig from source.

During package build:

 * the Debian source tree is copied into `bootstrap/zig`
 * `bootstrap/build x86_64-linux baseline` performs the source build
 * the resulting compiler tree is installed from `bootstrap/out/...`

This keeps the Debian-facing package aligned with upstream's published
source-bootstrap flow while avoiding network access during the package build.

Current limitations
-------------------

This is an incremental redesign toward Debian-acceptable packaging.
Remaining review work includes:

 * more complete DEP-5 coverage for vendored bootstrap components
 * policy review of bundled toolchain sources
 * any further bootstrap constraints raised by sponsors
