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Technical groups
Dropdown arrow
Open source
Careers
Research
Blog
Contact
Consulting services

Improving the craft of software engineering

We are on a mission to improve developer experience (DX) and data-centric workflows (MLOps). Tweag is a collaborative space where engineers and researchers join forces to apply new ideas — all as open source.

Nix

Many thought leaders of the Nix community are Tweagers. Together with our clients, we contribute much of the technical roadmap, from better reproducibility and performance to new use cases and developer tools.

Bazel

We were among the first outside of Google to adopt Bazel. We are recognized community experts. We have contributed key features and new programming language support to Bazel. We did this for ourselves and now we can do it for you.

Haskell

We are among the top contributors to GHC, a mature, state-of-the-art compiler for Haskell. Choosing Haskell is a path to more correct, scalable code for industries where mistakes matter. We created language interop with Java, JavaScript, C and R, we make Haskell run in your browser, and do the heavy lifting in your analytics pipelines.

Nickel

Write complex configurations. Modular, correct and boilerplate-free.

Featured on our blog

Python Packaging in the Real World: Biomedical projects vs. PyPI

An empirical analysis of Python packages on PyPI and biomedical journals in 2023, with a focus on the quality of dependency declarations.

Reflecting away from definitions in Liquid Haskell

Internship report: Extensions to the reflection mechanism of Liquid Haskell to handle functions from dependencies.

Adding algebraic data types to Nickel

A recent release of Nickel added algebraic data types and pattern matching. This blog post explains the motivation behind this addition, the design choices made, the considerations around backward compatibility and how ADTs can be useful for a configuration language.

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