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Johan Herland

PROFILE

Johan Herland

Worked on the Shopify/nixpkgs repository to enhance maintainability and expand support for numeric linear algebra workflows. Developed and initialized the xtensor-blas package at version 0.22.0, defining build inputs, source fetching, and metadata, while implementing test scaffolding that filters known failing cases to improve CI reliability. Enabled BLAS and LAPACK bindings for xtensor, supporting performance-focused computation. Improved package management by adding maintainer metadata, ensuring accurate attribution and contactability. Leveraged skills in build systems, CI/CD, and configuration management, with a focus on Nix as the primary language and ecosystem. Delivered two features, emphasizing reliability and maintainability in package development.

Overall Statistics

Feature vs Bugs

100%Features

Repository Contributions

2Total
Bugs
0
Commits
2
Features
2
Lines of code
60
Activity Months1

Your Network

561 people

Shared Repositories

561

Work History

June 2025

2 Commits • 2 Features

Jun 1, 2025

June 2025 performance summary: Strengthened maintainability and expanded numeric linear algebra support in nixpkgs. Delivered maintainer attribution improvement and initialization of xtensor-blas 0.22.0, with build inputs, source fetching, metadata, and tests using filters for known failing cases; laid groundwork for BLAS/LAPACK bindings and CI reliability.

Activity

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Quality Metrics

Correctness90.0%
Maintainability90.0%
Architecture90.0%
Performance80.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

Nix

Technical Skills

Build SystemsCI/CDConfiguration ManagementDevOpsPackage Management

Repositories Contributed To

1 repo

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

Shopify/nixpkgs

Jun 2025 Jun 2025
1 Month active

Languages Used

Nix

Technical Skills

Build SystemsCI/CDConfiguration ManagementDevOpsPackage Management