build: add Codex package builder

2026-11-09 20:50:33 +00:00 · 2026-05-19 11:14:21 -07:00
parent 0a83353ca3
commit ee81a2c86d
8 changed files with 619 additions and 0 deletions
@@ -0,0 +1,94 @@
+"""Cargo builds for source-built Codex package artifacts."""
+
+from __future__ import annotations
+
+import subprocess
+from dataclasses import dataclass
+from pathlib import Path
+
+from .targets import REPO_ROOT
+from .targets import TargetSpec
+
+
+CODEX_RS_ROOT = REPO_ROOT / "codex-rs"
+
+
+@dataclass(frozen=True)
+class SourceBuildOutputs:
+    codex_bin: Path
+    bwrap_bin: Path | None
+    codex_command_runner_bin: Path | None
+    codex_windows_sandbox_setup_bin: Path | None
+
+
+def build_source_binaries(
+    spec: TargetSpec,
+    *,
+    cargo: str,
+    profile: str,
+) -> SourceBuildOutputs:
+    binaries = source_binaries_for_target(spec)
+    cmd = [
+        cargo,
+        "build",
+        "--target",
+        spec.target,
+        "--profile",
+        profile,
+    ]
+    for binary in binaries:
+        cmd.extend(["--bin", binary])
+
+    print("+", " ".join(cmd))
+    subprocess.run(cmd, cwd=CODEX_RS_ROOT, check=True)
+
+    output_dir = cargo_profile_output_dir(spec, profile)
+    outputs = SourceBuildOutputs(
+        codex_bin=output_dir / spec.codex_name,
+        bwrap_bin=output_dir / "bwrap" if spec.is_linux else None,
+        codex_command_runner_bin=(
+            output_dir / "codex-command-runner.exe" if spec.is_windows else None
+        ),
+        codex_windows_sandbox_setup_bin=(
+            output_dir / "codex-windows-sandbox-setup.exe" if spec.is_windows else None
+        ),
+    )
+    validate_source_outputs(outputs)
+    return outputs
+
+
+def source_binaries_for_target(spec: TargetSpec) -> list[str]:
+    binaries = ["codex"]
+    if spec.is_linux:
+        binaries.append("bwrap")
+    if spec.is_windows:
+        binaries.extend(
+            [
+                "codex-command-runner",
+                "codex-windows-sandbox-setup",
+            ]
+        )
+    return binaries
+
+
+def cargo_profile_output_dir(spec: TargetSpec, profile: str) -> Path:
+    return CODEX_RS_ROOT / "target" / spec.target / cargo_profile_dirname(profile)
+
+
+def cargo_profile_dirname(profile: str) -> str:
+    if profile == "dev":
+        return "debug"
+    if profile == "release":
+        return "release"
+    return profile
+
+
+def validate_source_outputs(outputs: SourceBuildOutputs) -> None:
+    for path in [
+        outputs.codex_bin,
+        outputs.bwrap_bin,
+        outputs.codex_command_runner_bin,
+        outputs.codex_windows_sandbox_setup_bin,
+    ]:
+        if path is not None and not path.is_file():
+            raise RuntimeError(f"cargo build did not produce expected binary: {path}")