Skip to content
@tweag

Tweag by Modus Create

Improving the craft of software engineering

Hello from the Tweag team!

Scale your engineering power

At Tweag we love using open source methods and research ideas to improve software quality and reliability. We are big on composable software: functional, typed, immutable. You might have seen some of our work in your own favourite technical community, or read some of our articles.

We're hiring, globally, so if you want to shape the future of the software industry working with innovative clients and smart, friendly colleagues, read more here!

Pinned Loading

  1. rules_nixpkgs rules_nixpkgs Public

    Rules for importing Nixpkgs packages into Bazel.

    Starlark 388 103

  2. ormolu ormolu Public

    A formatter for Haskell source code

    Haskell 1.1k 90

  3. jupyenv jupyenv Public

    Declarative and reproducible Jupyter environments - powered by Nix

    Nix 745 152

  4. FawltyDeps FawltyDeps Public

    Python dependency checker

    Python 289 19

Repositories

Showing 10 of 465 repositories
  • rules_haskell Public

    Haskell rules for Bazel.

    tweag/rules_haskell's past year of commit activity
    Starlark 279 Apache-2.0 93 183 (19 issues need help) 40 Updated Sep 18, 2026
  • rules_sh Public

    Shell rules for Bazel

    tweag/rules_sh's past year of commit activity
    Starlark 49 Apache-2.0 5 11 5 Updated Sep 17, 2026
  • tricorder Public

    Tricorder provides simple, fast, focused feedback when hacking on Haskell (with or without LLM agents).

    tweag/tricorder's past year of commit activity
    Haskell 56 MIT 4 13 1 Updated Sep 17, 2026
  • ghc-persistent-worker Public Forked from MercuryTechnologies/ghc-persistent-worker

    persistent worker prototype

    tweag/ghc-persistent-worker's past year of commit activity
    Haskell 0 7 0 4 Updated Sep 17, 2026
  • cardano-peras Public

    Architecture for Ouroboros Peras on the Cardano chain

    tweag/cardano-peras's past year of commit activity
    TeX 4 0 90 (5 issues need help) 5 Updated Sep 17, 2026
  • nixpkgs Public Forked from NixOS/nixpkgs

    Nix Packages collection

    tweag/nixpkgs's past year of commit activity
    Nix 2 MIT 20,347 0 2 Updated Sep 17, 2026
  • nix-security-tracker Public Forked from NixOS/nix-security-tracker

    Web service for managing information on vulnerabilities in software distributed through Nixpkgs

    tweag/nix-security-tracker's past year of commit activity
    Python 1 MIT 40 0 1 Updated Sep 17, 2026
  • ouroboros-network Public Forked from IntersectMBO/ouroboros-network

    Specifications of network protocols and implementations of components running these protocols which support a family of Ouroboros Consesus protocols; the diffusion layer of the Cardano Node.

    tweag/ouroboros-network's past year of commit activity
    Haskell 1 Apache-2.0 108 0 0 Updated Sep 17, 2026
  • opam-nix Public

    Turn opam-based OCaml projects into Nix derivations

    tweag/opam-nix's past year of commit activity
    Nix 167 MIT 52 8 2 Updated Sep 17, 2026
  • run-nix-shell Public

    GitHub action for executing scripts via nix-shell.

    tweag/run-nix-shell's past year of commit activity
    Shell 8 Apache-2.0 1 3 3 Updated Sep 16, 2026