Adam Perry @ OpenAI 5c8136f48a [codex] Add hermetic Wine test support (#27964) ...

## Why

We want to make it possible for an app-server orchestrator on one OS to
control an exec-server on another host running a different OS. In
practice this kinda already works if you get lucky and the two hosts
have the same path format, but we mangle quite a lot of operations if
either end is Windows.

We should be able to test the cross-platform interactions for
exec-server, but we want to do this fairly soon and need a lightweight
option for testing. Using Wine to run the Windows side is far from
perfect, but it should give us a decent measure of how well we're
handling the basics of paths, process spawning, shell interaction, etc.

Future changes will add actual exec-server tests and possibly extensions
to the Wine testing environment.

## What

To make the cross-target-triple build easy, these tests are added only
to the Bazel build. This change adds an x86_64 Wine prebuilt managed by
Bazel and some build rules that can set up the needed toolchain
transition.

The support library for running Wine in a test environment created by
the Bazel rules comes with its own basic unit and integration tests.
Their primary priority is to make sure we don't leak child processes on
developer machines and that we can build and launch a basic hello world
binary.

## Validation

Confirmed these new tests are running on the [x86_64 bazel ubuntu
jobs](https://github.com/openai/codex/actions/runs/27446432302/job/81132356855?pr=27937):

```
//bazel/rules/testing/wine:wine-smoke-test                      (cached) PASSED in 3.7s
//bazel/rules/testing/wine:wine-test-support-unit-tests         (cached) PASSED in 15.8s
```

5c8136f48a · 2026-06-12 18:24:49 -07:00

History

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BUILD.bazel

[codex] Add hermetic Wine test support (#27964)

2026-06-12 18:24:49 -07:00