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Duncan Macleod

PROFILE

Duncan Macleod

Over eight months, this developer contributed to projects such as conda/conda, gwastro/pycbc, matplotlib/matplotlib, and conda-forge, focusing on reliability, maintainability, and ecosystem readiness. They fixed critical bugs in conda’s CLI JSON export path, stabilized MacOS ARM64 CI for pycbc by refining dependency management, and migrated segment handling to a unified API. Their work in matplotlib improved documentation clarity through Sphinx extension enhancements and formatting fixes. They also delivered packaging scaffolding for aiowebdav2 and managed risk in conda-forge by marking problematic packages as broken. Their technical approach emphasized Python, CI/CD, DevOps, and rigorous documentation and testing standards.

Overall Statistics

Feature vs Bugs

38%Features

Repository Contributions

8Total
Bugs
5
Commits
8
Features
3
Lines of code
3,275
Activity Months8

Work History

February 2026

1 Commits

Feb 1, 2026

Feb 2026: Stability and risk reduction in conda-forge/admin-requests. Contained a libc-link issue by marking LALSimulation 6.2.0 packages as broken to prevent broken installations and communicate the issue to users, reducing downstream failures and support load.

November 2025

1 Commits • 1 Features

Nov 1, 2025

November 2025: Focused on improving documentation quality for Matplotlib. Key feature delivered: Added the :code-caption: option to the plot directive in Matplotlib's Sphinx extension, enabling captions for code blocks in documentation. Implementation was completed in commit ce4789afe179faff1c717f09d6d9b994ca439b94, which closes the related issue (matplotlib/matplotlib#30740). Major bugs fixed: none reported this month. Overall impact: enhances documentation clarity for users including source code in docs, reducing confusion and support overhead. Technologies/skills demonstrated: Python, Sphinx extension development, documentation tooling, Git-based workflow, and code/documentation review processes.

August 2025

1 Commits • 1 Features

Aug 1, 2025

August 2025 — Ecosystem readiness for aiowebdav2 packaging in conda-forge/staged-recipes. Delivered packaging scaffolding and metadata to enable eventual inclusion in the conda-forge ecosystem, including versioning, dependencies (aiohttp, lxml), Python version constraints, and a build script. No major bugs fixed this period; stability and packaging hygiene improvements completed. Strengthened alignment with conda-forge standards, enabling broader distribution through established channels.

March 2025

1 Commits

Mar 1, 2025

March 2025: Implemented backport of dependency constraints in repodata for ligo.em-bright to support older builds (targetting v1.2.2 with build numbers < 2). The patch updates dependencies such as astropy, astropy-base, h5py, and pandas to ensure compatibility with legacy environments. Implemented in conda-forge/conda-forge-repodata-patches-feedstock, committed as 0d1209bb2e7ed33129b128149fd16e8f1a78f39c (#963). This work reduces build failures and stabilizes legacy workflows for downstream users and CI pipelines.

February 2025

1 Commits

Feb 1, 2025

February 2025 monthly work summary focusing on documentation quality improvements for matplotlib/matplotlib. Delivered a targeted documentation fix for deprecation notes in v3.10.0, improving readability and reducing potential user confusion. The change is doc-only, with a traceable commit: b7e602cf6ff4a4608a5718e4323dde1bf1b193c3. This supports onboarding, reduces support tickets, and demonstrates adherence to documentation standards.

January 2025

1 Commits • 1 Features

Jan 1, 2025

January 2025 monthly summary for gwastro/pycbc: The primary deliverable was standardizing segment handling by migrating from ligo-segments to igwn-segments across multiple modules, establishing a unified segment API and paving the way for future feature work and easier maintenance. No separate major bug fixes were reported this month; the focus was on architecture modernization and code health.

November 2024

1 Commits

Nov 1, 2024

November 2024 (gwastro/pycbc): Focused on stabilizing MacOS ARM64 CI testing by tightening conda-based dependency management, consolidating tox configurations, and ensuring packages install via conda. Implemented a fix to address macOS test failures, improving reliability and repeatability of CI runs. This work enhances cross-platform support and accelerates developer feedback for ARM64 workloads.

October 2024

1 Commits

Oct 1, 2024

Concise monthly summary for 2024-10 focusing on conda/conda work, highlighting a critical bug fix and associated test coverage that increased the reliability of the JSON export path.

Activity

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Quality Metrics

Correctness92.6%
Maintainability92.6%
Architecture90.0%
Performance82.6%
AI Usage20.0%

Skills & Technologies

Programming Languages

PythonYAMLrst

Technical Skills

BackportingBug FixingCI/CDCLI DevelopmentCode MigrationContinuous IntegrationDependency ManagementDevOpsGitPackage ManagementPythonPython DevelopmentSphinxTestingdocumentation

Repositories Contributed To

6 repos

Overview of all repositories you've contributed to across your timeline

gwastro/pycbc

Nov 2024 Jan 2025
2 Months active

Languages Used

PythonYAML

Technical Skills

CI/CDDependency ManagementPython DevelopmentTestingCode MigrationPython

matplotlib/matplotlib

Feb 2025 Nov 2025
2 Months active

Languages Used

rstPython

Technical Skills

documentationPythonSphinxtesting

conda/conda

Oct 2024 Oct 2024
1 Month active

Languages Used

Python

Technical Skills

Bug FixingCLI DevelopmentTesting

conda-forge/conda-forge-repodata-patches-feedstock

Mar 2025 Mar 2025
1 Month active

Languages Used

YAML

Technical Skills

BackportingDependency ManagementPackage Management

conda-forge/staged-recipes

Aug 2025 Aug 2025
1 Month active

Languages Used

YAML

Technical Skills

DevOpsPackage Management

conda-forge/admin-requests

Feb 2026 Feb 2026
1 Month active

Languages Used

Python

Technical Skills

Continuous IntegrationDevOpsGitPython