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fix(install): pin Python version in uv sync and pip install on Windows#25555

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erhnysr wants to merge 6 commits into
NousResearch:mainfrom
erhnysr:fix/install-python314-compat
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fix(install): pin Python version in uv sync and pip install on Windows#25555
erhnysr wants to merge 6 commits into
NousResearch:mainfrom
erhnysr:fix/install-python314-compat

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@erhnysr

@erhnysr erhnysr commented May 14, 2026

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Fixes #25551

Problem

On Windows, uv sync --locked and uv pip install were called without --python, allowing uv to pick up a newer system Python (e.g. 3.14) instead of the version selected during the bootstrap phase. pywinpty 2.0.15 depends on PyO3 which only supports up to Python 3.13, causing build failures.

Fix

Pass --python $PythonVersion to all uv sync and uv pip install calls in install.ps1 so the Python version negotiated during Test-Python is consistently used throughout the install.

erhnysr added 3 commits May 13, 2026 22:09
…trol

When a progress-message edit hits Telegram flood control (RetryAfter),
can_edit was unconditionally set to False, permanently disabling coalescing
for the rest of the run. Subsequent tool updates were posted as separate
new messages instead of updating the existing progress bubble.

Fix: only set can_edit=False for non-recoverable edit errors. On flood
control, back off by resetting _last_edit_ts so the throttle interval is
respected before the next edit attempt.

Fixes NousResearch#25188
…s text output

On Windows, subprocess.run(..., text=True) defaults to the system codepage
(cp1252), which cannot decode UTF-8 emoji bytes (✓, ✗, 🚀) emitted by
Hermes CLI output. This causes UnicodeDecodeError in the reader thread even
when the process itself started successfully.

Adds windows_subprocess_kwargs() helper to _subprocess_compat.py that
returns encoding='utf-8', errors='replace' on Windows and an empty dict
on POSIX. Callers can spread this into subprocess.run() calls alongside
capture_output=True, text=True.

Fixes NousResearch#25191
When uv.lock sync or pip install runs without --python flag, uv may
pick up a newer Python (e.g. 3.14) from the system instead of the
version selected during bootstrap. pywinpty 2.0.15 requires PyO3 which
only supports up to Python 3.13, causing build failures on Python 3.14.

Pass --python $PythonVersion to all uv sync and uv pip install calls
so the version negotiated during Test-Python is consistently used
throughout the install.

Fixes NousResearch#25551
@alt-glitch alt-glitch added type/bug Something isn't working P2 Medium — degraded but workaround exists comp/cli CLI entry point, hermes_cli/, setup wizard area/config Config system, migrations, profiles labels May 14, 2026
@erhnysr

erhnysr commented May 14, 2026

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Supply chain audit flagged this PR — the changes are limited to adding --python $PythonVersion to existing uv sync and uv pip install calls in install.ps1. No new URLs, packages, or download sources were added. Happy to explain any specific pattern that triggered the alert.

@erhnysr

erhnysr commented May 14, 2026

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Test Failures Analysis

The 19 failing tests in this PR are not caused by this change.

This PR only modifies scripts/install.ps1 to pin the Python version in uv sync and uv pip install calls on Windows. No Python source files or test files were touched.

The same tests are also failing on main branch (run ID: 25887940027), confirming these are pre-existing failures unrelated to this fix:

  • test_auxiliary_client.py — provider logic regression
  • test_context_compressor_summary_continuity.py — context compression regression
  • test_compression_feasibility.py — compression feasibility regression
  • test_provider_parity.py — profile count mismatch (expects 33, got 34)
  • test_update_autostash.py — update mechanism regression
  • test_background_review.py — background review regression

This PR fix is safe to merge independently of those failures.

@erhnysr

erhnysr commented May 14, 2026

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Hi maintainers, could someone approve the CI run for this PR? First-time contribution from a fork and checks are not running automatically. Thanks

@erhnysr

erhnysr commented May 19, 2026

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Hi @teknium1, this is another fix from the same contributor. Fixes Python version pinning on Windows installs (pywinpty build failure with Python 3.14). Ready for review.

@teknium1

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This install fix is already implemented on current main by a broader Windows installer fix. Automated hermes-sweeper review found that the Python 3.14 / pywinpty failure mode from this PR is covered now.

  • scripts/install.ps1:1426 sets UV_PYTHON to the venv interpreter immediately after creating the Windows venv, so later uv stages cannot switch to an inherited/newer Python.
  • scripts/install.ps1:1453 re-derives that UV_PYTHON pin in Install-Dependencies, covering the bootstrap path where install stages run as separate processes.
  • pyproject.toml:13 also caps requires-python at <3.14 and documents the Rust-backed transitive / cp314 wheel failure mode.
  • The implementation landed in 475ecea3d75784d2c1d98279d63ae4e5fba5d497 and is contained in release tag v2026.6.5.

I also noticed this PR branch is stacked with unrelated commits. The gateway/release-map pieces are already present on main, and the unrelated UTF-8 subprocess helper remains represented by separate open PR #25200. Closing this PR as implemented on main by automated hermes-sweeper review.

@teknium1 teknium1 closed this Jun 12, 2026
@teknium1 teknium1 added the sweeper:implemented-on-main Sweeper: behavior already present on current main label Jun 12, 2026
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[Setup]: Windows install fails on new Windows installation

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