## Why The package builder should be easy to run during local iteration. Requiring callers to provide both a target triple and an output directory every time makes the common host-package case more awkward than necessary. This PR keeps explicit overrides available, but makes the default invocation useful: build for the current host platform and place the package in a fresh temporary directory. Because a temp output path is otherwise easy to lose, the builder continues to print the final package directory path when it completes. ## What changed - Makes `--target` optional and maps the host OS/architecture to supported Codex package target triples. - Uses GNU Linux target triples for Linux host defaults, while keeping the musl targets available for release jobs that pass `--target` explicitly. - Makes `--package-dir` optional and creates a new `codex-package-*` temp directory when omitted. - Documents the new defaults in `scripts/codex_package/README.md`. ## Verification - Compiled `scripts/build_codex_package.py` and `scripts/codex_package/*.py` with `PYTHONDONTWRITEBYTECODE=1`. - Ran `scripts/build_codex_package.py --help` from outside the repo. - Verified Linux host detection maps `x86_64` and `aarch64` to GNU target triples. - Ran a fake-Cargo package build while omitting both `--target` and `--package-dir`; verified the generated metadata target, expected package files, and printed temp package path. - Ran a fake-Cargo package build for `x86_64-unknown-linux-gnu` and verified `codex`, `bwrap`, and `rg` are assembled into the package.
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Codex package builder
This package contains the implementation behind scripts/build_codex_package.py.
The top-level script is the stable executable entry point; these modules keep the
package-building logic split by responsibility.
The builder creates a canonical Codex package directory:
.
├── codex-package.json
├── bin
│ └── codex[.exe]
├── codex-resources
│ ├── bwrap # Linux only
│ ├── codex-command-runner.exe # Windows only
│ └── codex-windows-sandbox-setup.exe # Windows only
└── codex-path
└── rg[.exe]
The package directory is the primary artifact. Archive formats such as
.tar.gz, .tar.zst, and .zip are serializations of that directory.
If --target is omitted, the builder uses the release target for the current
host platform. On Linux, that default is a musl target to match Codex release
artifacts; pass a GNU Linux target explicitly for native glibc local builds. If
--package-dir is omitted, the builder creates a new temporary directory and
prints its path after the package is built.
Source-built artifacts
Artifacts built from this repository are always built by the package builder in
one grouped cargo build command per package:
- all targets:
codex - Linux targets:
bwrap - Windows targets:
codex-command-runnerandcodex-windows-sandbox-setup
The default cargo profile is dev-small because local iteration should favor
fast, small builds. Release jobs should pass --cargo-profile release and an
explicit target.
rg is not built from this repository, so the builder fetches it from the
DotSlash manifest at codex-cli/bin/rg. Downloaded archives are cached under
$TMPDIR/codex-package/<target>-rg and are reused only after the recorded size
and SHA-256 digest have been verified. Pass --rg-bin to use a local ripgrep
executable instead.