Re-enable pathlib home expansion test

[ada-x64]

Summary

Set a writable HOME in the Nanvix test harness and re-enable the NSKIP025 pathlib test. Keep the documented guest invocations consistent with the harness.

Closes #505

Testing

Verified against the full lifecycle.

[Copilot]

Pull request overview

This PR restores Nanvix coverage for pathlib home-directory expansion by ensuring the Nanvix test harness provides a writable HOME environment variable, allowing the previously-skipped test_expanduser_common to run. It also updates the Nanvix documentation examples so the documented guest environment matches the harness behavior.

Changes:

• Re-enabled Lib/test/test_pathlib.py::test_expanduser_common on Nanvix by removing the Nanvix skip (NSKIP025).
• Set HOME=/tmp in the Nanvix test harness environment alongside TMPDIR=/tmp.
• Updated .nanvix/NANVIX.md guest invocation examples to include HOME=/tmp.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
Lib/test/test_pathlib.py	Removes the Nanvix-specific skip so the expanduser test runs when HOME is provided by the harness.
.nanvix/src/run-tests.py	Injects HOME=/tmp into the guest environment so os.path.expanduser('~') avoids pwd dependency and behaves predictably.
.nanvix/NANVIX.md	Keeps the documented guest invocation environment consistent by adding HOME=/tmp to examples.

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[Copilot]

🟡 Changes recommended

The Nanvix docs’ example env strings add HOME but still omit TMPDIR=/tmp, so they don’t fully match the harness environment being described.

Once you've addressed the issues Copilot identified, you can request another Copilot review.

Review details

Suppressed comments (2)

.nanvix/NANVIX.md:220

• This one-shot invocation example sets HOME but not TMPDIR, whereas the test harness uses TMPDIR=/tmp too. Add TMPDIR here for consistency (and to match the documented <ENV1=val ENV2=val ...> format).

    "-B ./test_hello.py;PYTHONHOME=/ PYTHONDONTWRITEBYTECODE=1 HOME=/tmp _PYTHON_SYSCONFIGDATA_NAME=_sysconfigdata__nanvix_"

.nanvix/NANVIX.md:231

• The single-module test invocation example now sets HOME but still omits TMPDIR, which the harness sets to /tmp. Consider adding TMPDIR=/tmp so the documented invocation matches what run-tests.py runs.

    "-B -m test --verbose test_int;PYTHONHOME=/ PYTHONDONTWRITEBYTECODE=1 HOME=/tmp NANVIX_STANDALONE=1 _PYTHON_SYSCONFIGDATA_NAME=_sysconfigdata__nanvix_"

• Files reviewed: 3/3 changed files
• Comments generated: 1
• Review effort level: Lite

[Copilot]

🔵 Needs a closer look

The updated Nanvix documentation examples still don’t fully match the harness environment (notably TMPDIR=/tmp), which conflicts with the PR’s stated goal of keeping invocations consistent.

Review details

Suppressed comments (3)

.nanvix/NANVIX.md:231

• For consistency with the harness environment, include TMPDIR=/tmp alongside HOME=/tmp in this invocation too (the harness passes both).

    "-B -m test --verbose test_int;PYTHONHOME=/ PYTHONDONTWRITEBYTECODE=1 HOME=/tmp NANVIX_STANDALONE=1 _PYTHON_SYSCONFIGDATA_NAME=_sysconfigdata__nanvix_"

.nanvix/NANVIX.md:196

• The docs say guest invocations are kept consistent with the test harness, but the harness also sets TMPDIR=/tmp (see .nanvix/src/run-tests.py app_env). Consider adding TMPDIR here as well so the example matches the harness and tempfile-related behavior.

    "-i;PYTHONHOME=/ PYTHONDONTWRITEBYTECODE=1 HOME=/tmp _PYTHON_SYSCONFIGDATA_NAME=_sysconfigdata__nanvix_"

.nanvix/NANVIX.md:220

• This example still omits TMPDIR=/tmp even though the harness passes it; adding it would keep the documented env list aligned with how tests are executed and make tempfile behavior reproducible.

    "-B ./test_hello.py;PYTHONHOME=/ PYTHONDONTWRITEBYTECODE=1 HOME=/tmp _PYTHON_SYSCONFIGDATA_NAME=_sysconfigdata__nanvix_"

• Files reviewed: 3/3 changed files
• Comments generated: 0 new
• Review effort level: Lite