Creator of Fable Python, Fable Beam and Reactive Extensions for Python (RxPY). Made the IrDA subsystem in the Linux kernel back in the 90'. On a quest to bridge the worlds of F# and Python ❤️ Microsoft Alumni and currently works at Cognitehttps://bsky.app/profile/dbrattli.bsky.socialhttps://bsky.app/profile/dbrattli.bsky.social/post/3msy4geugvs2nDependabot doesn’t support Paket projects, so I made PaketaBot. It runs in GitHub Actions and needs no hosted service. Written in F# and compiled with Fable https://github.com/cardamomcode/paketabot #fsharp #fablecompiler13 Aug 2026 16:57 +0000at://did:plc:tyfaiox4vguo7fy4kfljec7i/app.bsky.feed.post/3msy4geugvs2nhttps://bsky.app/profile/dbrattli.bsky.social/post/3mstjrsph2k2aI’ve been working on Agent Decision Comments (ADCs): a lightweight convention for preserving the why in agent-written, human-reviewed code. Four labels: decision, invariant, assumption, tradeoff Keep durable rationale beside the code. Feedback welcome: github.com/dbrattli/adc https://github.com/dbrattli/adc11 Aug 2026 21:13 +0000at://did:plc:tyfaiox4vguo7fy4kfljec7i/app.bsky.feed.post/3mstjrsph2k2ahttps://bsky.app/profile/dbrattli.bsky.social/post/3mrk7genmm225Recent progress on Fable.Giraffe. Runs on Python (uvcorn), BEAM (cowboy), and Node (express). Not a replacement for .NET, but when you need parts of your API on a different ecosystem. https://github.com/dbrattli/Fable.Giraffe #fsharp #fablecompiler26 Jul 2026 10:48 +0000at://did:plc:tyfaiox4vguo7fy4kfljec7i/app.bsky.feed.post/3mrk7genmm225https://bsky.app/profile/dbrattli.bsky.social/post/3mpl5nesjnc27Fable v5.5 is out 🥰🎉 Ro! Ro! Ro! 🚣🏼‍♀️🚣🏼‍♀️🚣🏼‍♀️ https://github.com/fable-compiler/Fable/releases/tag/5.5.0 #fsharp #fablecompiler01 Jul 2026 08:58 +0000at://did:plc:tyfaiox4vguo7fy4kfljec7i/app.bsky.feed.post/3mpl5nesjnc27https://bsky.app/profile/dbrattli.bsky.social/post/3moj3jyflws2rThe AI era belongs to ML-family languages. And the good patterns already exist in the training data: actor models, algebraic data types, supervision trees, compilers that refuse to let bad code exist. Solved decades ago, ... then drowned in noise. fsharp.org #fsharp https://fsharp.org/17 Jun 2026 19:50 +0000at://did:plc:tyfaiox4vguo7fy4kfljec7i/app.bsky.feed.post/3moj3jyflws2rhttps://bsky.app/profile/dbrattli.bsky.social/post/3moiz24mczs25The Fable Repl has been updated to include BEAM, and now compiles F# code to Erlang 🥰 fable.io/repl/ #fsharp #fablecompiler https://fable.io/repl/#fsharp17 Jun 2026 19:06 +0000at://did:plc:tyfaiox4vguo7fy4kfljec7i/app.bsky.feed.post/3moiz24mczs25https://bsky.app/profile/dbrattli.bsky.social/post/3mmytc7m5lk2eFable v5.1.0 is out 🎉Several bugfixes for most targets, and a few new features as well https://github.com/fable-compiler/Fable/releases/tag/5.1.0 #fsharp #fablecompiler29 May 2026 15:15 +0000at://did:plc:tyfaiox4vguo7fy4kfljec7i/app.bsky.feed.post/3mmytc7m5lk2ehttps://bsky.app/profile/dbrattli.bsky.social/post/3ml2lv4c2bk2hAgree, and with Fable you don't need to leave the ecosystem behind. TypeScript, Python, BEAM, Rust, .NET #fablecompiler [contains quote post or other embedded content]04 May 2026 21:17 +0000at://did:plc:tyfaiox4vguo7fy4kfljec7i/app.bsky.feed.post/3ml2lv4c2bk2hhttps://bsky.app/profile/dbrattli.bsky.social/post/3mjzfepw6ck2u✨Fable v5 ✨ Such great news today ❤️ In addition to JS/TS, Rust, and Dart, the Python target has been significantly improved, and there is also the exciting new BEAM target added to the list. Write once run everywhere 🥰 #fsharp #fablecompiler [contains quote post or other embedded content]21 Apr 2026 16:23 +0000at://did:plc:tyfaiox4vguo7fy4kfljec7i/app.bsky.feed.post/3mjzfepw6ck2u