Surma (@DasSurma) / X

Surma

22.3K posts

Surma

@DasSurma

DX & monorepo at @ShopifyEng Craving simplicity, finding it nowhere. Internetrovert 🏳️‍🌈 He/him.

Bristol, UK

Joined June 2008

Pinned
Surma
@DasSurma
Jun 17, 2025
📝 First blog in a long time! I always like “flow-based” programming, and it’s a very powerful paradigm. LangGraph lets you codify complex workflows as graphs, and also integrates really well with LangChain, if your workflow is LLM-driven.
LangGraph for complex workflows — surma.dev
From surma.dev
Surma
@DasSurma
Jul 9
Me: Review your own code changes using subagents GPT 5.6 Sol:
Surma
@DasSurma
May 28
This is what I have been working on! Shopify’s monorepo “world”, its nixification, building our Slack-based agent River and now generalizing River’s underlying agentic sandbox infrastructure called Aquifer. Finally I got someting I can share about it!
Under the River (2026) - Shopify
From shopify.engineering
Surma
@DasSurma
Mar 5
`builtins.wasm` is now a (experimental) thing in @DeterminateSys’ nix, with a PR open for upstream nix. This lets you extend the nix language by compiling C/C++/Rust/etc into safely sandboxed, platform-independent plugins!
A new chapter for the Nix language, courtesy of WebAssembly
From determinate.systems
Surma
@DasSurma
Oct 16, 2025
I have been working on the nix & Rust codebase that builds @Shopify’s monorepo, and there’s so much left to do that we need help. If you are interested, apply here to join us at @ShopifyEng! DM me if you have questions! shopify.com/careers/softwa…

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