Fix CI: update Meson, macOS runner, and migrate to meson-python by Copilot · Pull Request #161 · dftd3/simple-dftd3

Copilot · 2026-02-05T16:45:17Z

CI fails with RuntimeError: There is no current event loop in thread 'MainThread' because Meson 0.58.0 uses deprecated asyncio.get_event_loop() which throws in Python 3.14.

Changes

Update assets/ci/build-env.yaml to require meson >=1.2.3,!=1.8.0
- 1.2.3+ contains the asyncio compatibility fix
- Excludes 1.8.0 consistent with python-env.yaml
Update macOS workflow since macos-13 runner is retired:
- Change runner from macos-13 to macos-14
- Update GCC version from 10 to 12 (gcc@10 unavailable as bottle on macOS 14)
- Update Homebrew paths from /usr/local/bin to /opt/homebrew/bin (Apple Silicon)
Replace deprecated setuptools-based build with meson-python for Python build:
- Rename python/mesonpep517.toml to python/pyproject.toml
- Remove python/setup.py and python/setup.cfg
- Keep setuptools as a required dependency in dftd3/meson.build and pyproject.toml
- Update wheel.yml to remove obsolete mesonpep517 rename step
- Add meson-python and ninja to python-env.yaml
- Update build.yml to use meson-python with --no-build-isolation
Update wheel.yml to use macos-14 instead of retired macos-13 for ARM64 wheel builds

Original prompt

This section details on the original issue you should resolve

<issue_title>GitHub actions for testing build is broken</issue_title>
<issue_description>Currently the build via the CI workflow is broken (https://github.com/dftd3/simple-dftd3/actions/runs/20005011041)</issue_description>

<agent_instructions>Update the CI workflow to fix any issues from missing dependencies or incomplete compiler setup</agent_instructions>

Comments on the Issue (you are @copilot in this section)

Fixes GitHub actions for testing build is broken #160

💬 We'd love your input! Share your thoughts on Copilot coding agent in our 2 minute survey.

Co-authored-by: awvwgk <28669218+awvwgk@users.noreply.github.com>

codecov · 2026-02-05T17:23:32Z

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 66.34%. Comparing base (86dcf33) to head (9da0fff).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #161   +/-   ##
=======================================
  Coverage   66.34%   66.34%           
=======================================
  Files          33       33           
  Lines        4627     4627           
  Branches     1608     1608           
=======================================
  Hits         3070     3070           
  Misses        637      637           
  Partials      920      920

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awvwgk · 2026-02-05T17:23:52Z

@copilot Update the macOS workflow since the macos-13 runner is retired

Co-authored-by: awvwgk <28669218+awvwgk@users.noreply.github.com>

Copilot · 2026-02-05T17:27:10Z

@copilot Update the macOS workflow since the macos-13 runner is retired

Updated in d391ffa. Changes:

macos-13 → macos-14
GCC version 10 → 12 (gcc@10 unavailable as bottle on macOS 14)
Homebrew paths /usr/local/bin → /opt/homebrew/bin (Apple Silicon)

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

formulae.brew.sh
- Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node /home/REDACTED/work/_temp/ghcca-node/node/bin/node --enable-source-maps /home/REDACTED/work/_temp/copilot-developer-action-main/dist/index.js (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

Configure Actions setup steps to set up my environment, which run before the firewall is enabled
Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

awvwgk · 2026-02-06T08:07:04Z

@copilot The Python build with setuptools is broken. Deprecate and remove the setuptools based build and replace it with meson-python (see python/mesonpep517.toml file as used in the wheel build workflow).

Co-authored-by: awvwgk <28669218+awvwgk@users.noreply.github.com>

Copilot · 2026-02-06T08:10:32Z

@copilot The Python build with setuptools is broken. Deprecate and remove the setuptools based build and replace it with meson-python (see python/mesonpep517.toml file as used in the wheel build workf...

Replaced setuptools with meson-python in 3b19140:

Renamed mesonpep517.toml → pyproject.toml
Removed setup.py and setup.cfg
Updated dftd3/meson.build to remove setuptools dependency
Updated wheel.yml to remove obsolete mesonpep517 rename step
Added meson-python and ninja to python-env.yaml
Updated build.yml to use --no-build-isolation with meson-python

Co-authored-by: awvwgk <28669218+awvwgk@users.noreply.github.com>

awvwgk · 2026-02-06T10:54:01Z

@copilot Also update the wheel workflow to use a newer version of the macos runner

Co-authored-by: awvwgk <28669218+awvwgk@users.noreply.github.com>

Copilot · 2026-02-06T10:55:57Z

@copilot Also update the wheel workflow to use a newer version of the macos runner

Updated in 9da0fff. Replaced retired macos-13 with macos-14 and simplified the macOS wheel build configuration for ARM64-only builds.

Initial plan

7ae51fc

Copilot AI assigned Copilot and awvwgk Feb 5, 2026

Copilot started work on behalf of awvwgk February 5, 2026 16:45 View session

Update Meson to >=1.2.3 for Python 3.14 compatibility

cf5585c

Co-authored-by: awvwgk <28669218+awvwgk@users.noreply.github.com>

Copilot AI changed the title ~~[WIP] Fix broken GitHub actions for CI build~~ Fix CI: update Meson for Python 3.14 compatibility Feb 5, 2026

Copilot AI requested a review from awvwgk February 5, 2026 16:48

Copilot finished work on behalf of awvwgk February 5, 2026 16:48

Copilot started work on behalf of awvwgk February 5, 2026 17:24 View session

Update macOS workflow: macos-13 → macos-14 with GCC 12

d391ffa

Co-authored-by: awvwgk <28669218+awvwgk@users.noreply.github.com>

Copilot AI changed the title ~~Fix CI: update Meson for Python 3.14 compatibility~~ Fix CI: update Meson and macOS runner for compatibility Feb 5, 2026

Copilot finished work on behalf of awvwgk February 5, 2026 17:27

awvwgk marked this pull request as ready for review February 5, 2026 17:27

Copilot started work on behalf of awvwgk February 6, 2026 08:07 View session

Replace setuptools with meson-python for Python build

3b19140

Co-authored-by: awvwgk <28669218+awvwgk@users.noreply.github.com>

Copilot AI changed the title ~~Fix CI: update Meson and macOS runner for compatibility~~ Fix CI: update Meson, macOS runner, and migrate to meson-python Feb 6, 2026

Copilot finished work on behalf of awvwgk February 6, 2026 08:11

awvwgk reviewed Feb 6, 2026

View reviewed changes

Comment thread python/dftd3/meson.build

Copilot started work on behalf of awvwgk February 6, 2026 08:43 View session

Restore setuptools as a required dependency

30f4665

Co-authored-by: awvwgk <28669218+awvwgk@users.noreply.github.com>

Copilot AI requested a review from awvwgk February 6, 2026 08:45

Copilot finished work on behalf of awvwgk February 6, 2026 08:45

Copilot started work on behalf of awvwgk February 6, 2026 10:54 View session

Update wheel workflow to use macos-14 instead of retired macos-13

9da0fff

Co-authored-by: awvwgk <28669218+awvwgk@users.noreply.github.com>

Copilot finished work on behalf of awvwgk February 6, 2026 10:56

awvwgk merged commit 97fc056 into main Feb 6, 2026
48 checks passed

awvwgk deleted the copilot/fix-ci-workflow-issues branch February 6, 2026 13:45

awvwgk mentioned this pull request Feb 6, 2026

Deprecate setuptools support in favor of meson-python #83

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Fix CI: update Meson, macOS runner, and migrate to meson-python#161

Fix CI: update Meson, macOS runner, and migrate to meson-python#161
awvwgk merged 6 commits intomainfrom
copilot/fix-ci-workflow-issues

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