2.0 -//Pentabarf//Schedule//EN PUBLISH 38JNUB@@pretalx.dgnum.eu -38JNUB Introduction to LixCon en en 20260417T100000 20260417T101500 0.01500

Introduction to LixCon

PUBLIC CONFIRMED Talk https://pretalx.dgnum.eu/lixcon-2026/talk/38JNUB/ Amphitheater Dussane Ryan Lahfa ("RaitoBezarius") PUBLISH YZZKYT@@pretalx.dgnum.eu -YZZKYT Botanix: A Nix native CI in a forge-agnostic world en en 20260417T101500 20260417T103000 0.01500

Botanix: A Nix native CI in a forge-agnostic world

PUBLIC CONFIRMED Short talk https://pretalx.dgnum.eu/lixcon-2026/talk/YZZKYT/ Amphitheater Dussane Tom Hubrecht PUBLISH PEDV9S@@pretalx.dgnum.eu -PEDV9S The untapped potential of Lix plugins en en 20260417T104500 20260417T111500 0.03000

The untapped potential of Lix plugins

PUBLIC CONFIRMED Talk https://pretalx.dgnum.eu/lixcon-2026/talk/PEDV9S/ Amphitheater Dussane Qyriad PUBLISH HVZTB9@@pretalx.dgnum.eu -HVZTB9 The politics of language design en en 20260417T111500 20260417T114500 0.03000

The politics of language design

PUBLIC CONFIRMED Talk https://pretalx.dgnum.eu/lixcon-2026/talk/HVZTB9/ Amphitheater Dussane Pierre-Étienne Meunier PUBLISH F83VYV@@pretalx.dgnum.eu -F83VYV Regiux: prototyping a fast Nix interpreter en en 20260417T114500 20260417T121500 0.03000

Regiux: prototyping a fast Nix interpreter

Regiux is yet another attempt at a fast Nix evaluator. Come learn about the ingredients that go into modern compilers and interpreters, particularly: * Lexing and parsing * Desugaring and expanding * Intermediate languages for lambda calculus * Using the RPython JIT toolkit * Bytecode for lazy graph evaluation PUBLIC CONFIRMED Talk https://pretalx.dgnum.eu/lixcon-2026/talk/F83VYV/ Amphitheater Dussane Corbin PUBLISH A7BNGC@@pretalx.dgnum.eu -A7BNGC meltwater rapids en en 20260417T134500 20260417T141500 0.03000

meltwater rapids

a brief look into the more recent history of lix dealing with tech debt, and where we want to go from here PUBLIC CONFIRMED Talk https://pretalx.dgnum.eu/lixcon-2026/talk/A7BNGC/ Amphitheater Dussane eldritch horrors Raito PUBLISH KBFUXL@@pretalx.dgnum.eu -KBFUXL To sleep in a sea of Tests | Refactoring a testing "framework" from hell en en 20260417T141500 20260417T143000 0.01500

To sleep in a sea of Tests | Refactoring a testing "framework" from hell

Many curses and screams of frustration has the functional test suite brought forth in many - if not all - lix developers. Hence people wanted a successor. In this session, we will talk about all the pain, impurities and falkeyness of the functional suite, look at the features and non-features of functional2, and the pain of migrating tests. PUBLIC CONFIRMED Short talk https://pretalx.dgnum.eu/lixcon-2026/talk/KBFUXL/ Amphitheater Dussane rootile PUBLISH Z3CRCM@@pretalx.dgnum.eu -Z3CRCM Nix and buck2: from enemies to lovers with snowydeer en en 20260417T145000 20260417T152000 0.03000

Nix and buck2: from enemies to lovers with snowydeer

Hermetic build systems are hard to interoperate with, but there are cheat codes: by resolving their trust issues, you can combine their respective benefits. For the last year, my team and I have been working on a Buck2 migration for one of the largest Haskell codebases in industry to reduce build times from dozens of minutes to seconds and improve user experience. We use Nix to orchestrate hundreds of Haskell dependencies and hundreds more dependencies across the Rust, TypeScript, Python and C ecosystems. On top of that, we are running a much newer Haskell compiler than most of the industry due to active involvement in GHC development, which means a *heavily* patched nixpkgs Haskell dependency set to be able to incorporate these improvements. By building a Nix-Buck2-Nix sandwich, we were able to focus on rewriting our product build in buck2 while keeping both our Nix-based dependencies and our deployment pipelines to both NixOS and AWS ECS completely as-is. The novel contributions of this talk are: * Creating full-featured store paths *entirely* outside of Nix with Snowydeer: * Reference scanning outside of Nix using ripgrep * Using a new Lix CLI feature: output-addressed paths with references * Referencing those store paths from Nix language for further processing * Using Nix as a build step rather than a build driver to create an ergonomic Docker image builder with Snowydeer Container This talk builds on previous work, such as: - ["Integrating Nix and Buck2 for fun and profit"](https://www.youtube.com/watch?v=pDkFk7iggIE) by Claudio Bley - ["Haskell Builds at Scale: Comparing Bazel and Buck2"](https://www.youtube.com/watch?v=eA-3Gfr4epU) by Andreas Herrmann - ["Towards Dream Haskell Build Experience"](https://www.youtube.com/watch?v=WrdXUYFnRv4) by Ian-Woo Kim PUBLIC CONFIRMED Talk https://pretalx.dgnum.eu/lixcon-2026/talk/Z3CRCM/ Amphitheater Dussane Jade Lovelace PUBLISH QFSZRU@@pretalx.dgnum.eu -QFSZRU Using Nix without the Nix: a Retrospective on Zilch en en 20260417T152000 20260417T155000 0.03000

Using Nix without the Nix: a Retrospective on Zilch

PUBLIC CONFIRMED Talk https://pretalx.dgnum.eu/lixcon-2026/talk/QFSZRU/ Amphitheater Dussane Puck PUBLISH EYHR9T@@pretalx.dgnum.eu -EYHR9T LixCon outro en en 20260417T155000 20260417T160500 0.01500

LixCon outro

PUBLIC CONFIRMED Short talk https://pretalx.dgnum.eu/lixcon-2026/talk/EYHR9T/ Amphitheater Dussane Ryan Lahfa ("RaitoBezarius") PUBLISH EW3JLJ@@pretalx.dgnum.eu -EW3JLJ Updates from Lix' Nix-lang land en en 20260417T143000 20260417T150000 0.03000

Updates from Lix' Nix-lang land

PUBLIC CONFIRMED Discussion format https://pretalx.dgnum.eu/lixcon-2026/talk/EW3JLJ/ Salle des Actes piegames PUBLISH 7CR3VM@@pretalx.dgnum.eu -7CR3VM Afnix GA en en 20260418T140000 20260418T150000 1.00000

Afnix GA

General Assembly of the Association Française Nix (AFNix - https://afnix.fr), non-profit organization providing legal and technical infrastructure for Nix community projects. We help make Lix possible! This General Assembly meeting is open to the public to listen in, however please be advised that active participation will be limited to organization members only. AFNix members will be available throughout the entire LixCon event for open discussion. PUBLIC CONFIRMED Afnix GA https://pretalx.dgnum.eu/lixcon-2026/talk/7CR3VM/ Amphitheater Dussane