I built a CLI tool for analyzing dbt project lineage, with reference to best practices for building AI agent-friendly CLIs. dlin parses SQL directly, so no manifest.json, dbt compile, or Python is required. Written in Rust, single binary. Outputs JSON, Mermaid, DOT and more. github.com/eitsupi/dlin

It’s difficult to come by joy these days, this puts a smile on my face.

Local-First Conf 2026 is back, and I want to hear what everyone's been doing this year. What have you built? What have you learned? How about interesting challenges we need to overcome?

The March edition of posit::glimpse() is here! 🚀 Key updates include Posit AI, a new assistant in RStudio, Pointblank for synthetic data for #Python, mirai v2.6.0: 50% faster async #RStats ⚡, Positron's PDF viewer + Jupyter support, and more. Read the full roundup: posit.co/blog/glimpse...

New: mirai skill for AI coding agents 🤖 Use with Claude Code/Codex/Cursor for writing async/parallel R code. Covers explicit dependency passing, daemon setup, mirai_map, Shiny integration ++ Install: npx skills add posit-dev/skills --skill mirai github.com/shikokuchuo/mirai/tree/main/dev/skills

RStudio now has next edit suggestions! I wrote a bit about how they work and have open-sourced the eval we used to engineer the system's prompt: www.simonpcouch.com/blog/2026-03...

If you are interested in PDF accessibility, there has been some big progress in Quarto. Take a look at the latest blog post: quarto.org/docs/blog/po... #Quarto #Accessibility #LaTeX #Typst

I presented at Shiny in Production 2025, an incredible conference hosted by @jumpingrivers.com up in Newcastle! I was glad to share the very latest from the Shiny team directly. The topics were bleeding edge at the time, so still new and relevant now. My video: www.youtube.com/watch?v=vxai...

mirai 2.6.1 is now on CRAN Launching daemons on Posit Workbench wasn't working for you with mirai 2.6.0? We've fixed it! `http_config()` now authenticates correctly for all Workbench installation types. Scale seamlessly from laptop to enterprise with mirai. mirai.r-lib.org #Rstats #Tidyverse

HTTP streaming and Server-Sent Events in R with nanonext. Here's an example: gist.github.com/jrosell/178e...

Announcing mirai 2.6.0! This framework for parallel & async computing in #RStats just got a major upgrade: HTTP Launcher (incl to Posit Workbench!), C-Level Dispatcher, process results as they finish, and synchronous mode . Learn more: tidyverse.org/blog/2026/02...

mirai 2.6.0 is on CRAN — R's async framework now deploys from your laptop to Posit Workbench with a single call. New HTTP launcher, C-level dispatcher with near-zero overhead, `race_mirai()` for process-as-completed patterns, and sync mode for debugging. tidyverse.org/blog/2026/02/mirai-2-6-0/

nanonext 1.8.0 is out - R now has a streaming HTTP/WebSocket server with bundled TLS. Runs alongside Shiny in the same process. We're already using it at Posit to explore new real-time capabilities. #Rstats #tidyverse tidyverse.org/blog/2026/02/nanonext-1-8-0/

New post: the design behind secretbase, a 40KB streaming hash package I maintain. The entire source package is smaller than most hex sticker PNGs. Hash large objects with constant memory. Powers targets pipelines. Plus CBOR encoding comes to R. shikokuchuo.net/posts/28-int... #RStats #OpenSource

(OpenMP + Fortran) * Mirai levels of scaling!

ragnar 0.3.0 is now on CRAN! 🚀 An R toolkit for RAG from your docs: faster ingestion, better retrieval, Azure OpenAI + Snowflake embeddings, and MCP serving. tidyverse.org/blog/2026/01... #rstats #rag #ai

I merged a PR for mirai today (fixing an esoteric bug), that came with a performance boost that I'd never have thought existed. That means that on my laptop, the default (with dispatcher) round-trip performance now dips into sub-100 microseconds territory!! Get it now: `pak::pak("r-lib/mirai")`

Thanks to claude code, I wrote my first iphone app: apps.apple.com/us/app/time-... It's what I have always wanted for a talk timer (as both a speaker and a chair). It's very minimal, designed to be read from across the room, and make it clear when you're running out of time.

I sent 200 pull requests using Claude Code and wrote about the experience. It's pretty wild! For dplyr releases, we send a PR any time we break an #rstats package. This release advances a lot of deprecated functions, triggering issues in many old packages! blog.davisvaughan.com/posts/2026-0...

I released {secretbase} 1.1.0 today. github.com/shikokuchuo/... Adds optimized base58check and CBOR encoding. This is a zero-dep #rstats package that wraps C code for hashing and binary/text encoding often needed in web development contexts. It also handles the file/object hashing for {targets}.

I demonstrated OpenTelemetry at Japan.R 2025 last week as an example of ecosystem-wide innovation we're driving at Posit for #rstats. Now thanks to @schloerke.com we have it in a release version of Shiny. This was also a technology that other community speakers picked as one to watch in 2026!

I'm honoured and delighted to be delivering the keynote for Japan.R 2025 in Tokyo on Dec 6. New ideas on creativity and community in open source software. Live demonstrations of ggbot2, OpenTelemetry and mirai (Posit ecosystem-wide initiatives). #Rstats #Tidyverse japanr.connpass.com/event/374714/

Everyone can now view my posit::conf 2025 talk "purrrfectly parallel, purrrfectly distributed"! {purrr} now lets you access the magic of {mirai} directly, as the modern way to make things faster through parallel computation in #rstats. youtu.be/j1yHjMvbnQM?...

Much thanks to @lionelhenry.bsky.social and @cirw.in for pushing the rust bindings for Jupyter further and making @posit.co's Ark runtime work in @zed.dev! github.com/zed-industri...

To be effective, data science agents need to be able to read plots reliably. @sara-altman.bsky.social and I wrote about some concerning findings on LLMs' ability to interpret plots when the content contradicts their expectations on the @posit.co blog. posit.co/blog/introdu...

I put out a patch release of mirai today. Version 2.5.2 really improves the OpenTelemetry integration so you can more easily see into your async workflows. Other key ecosystem packages will roll out with this enabled - next up: Shiny! mirai.r-lib.org #Rstats

purrr 1.2.0 out now — mostly removing long deprecated functions but a few small performance nad parallel processing improvements. Learn more at www.tidyverse.org/blog/2025/11... #rstats

mcptools 0.2.0 is on CRAN! mcptools implements the Model Context Protocol in #rstats, allowing ellmer users to share context and tools more easily between LLM applications. Read more: github.com/posit-dev/mc...

reticulate v1.44 is on CRAN! Positron integration is now enabled by default. Enjoy R and Python REPL consoles powered by concurrent threads in the same process, zero‑copy R↔Python data transfer, and full Variables Pane support. Full changelog: github.com/rstudio/reti... #rstats #python #pydata

I'm excited to share a new version of the Air formatter for #rstats, with support for tabular formatting! Super useful with `tibble::tribble()` calls or `data.table::fcase()`. It's currently experimental as we're looking to get feedback on the feature, so please let us know what you think.

Gave a talk about orbital last week at Socal RUG, it was delightful as always to spend time with these people. Slides: emilhvitfeldt.github.io/talk-orbital... Recording: www.youtube.com/live/pm-Ve3w...

I'll be keynoting at R/Pharma in a few weeks! The conference is free and virtual; all are welcome to join. My talk "Practical AI for data science" is on November 5th and should be broadly accessible for #rstats users, regardless of industry. :) Learn more & register: rinpharma.com

I recently added a Deepwiki badge to mirai.r-lib.org. Not because I think the current documentation is lacking 😅, but it takes you to an `Ask DeepWiki` prompt with the full mirai source code as context so you can ask questions (and get answers) in *any* language. Any feedback welcome! #rstats

I wrote a paper about "Examining the Interface Design of Tidyverse" 📝 TL;DR to follow in future 😊 arxiv.org/abs/2510.10382

I recently added a Deepwiki badge to mirai.r-lib.org. Not because I think the current documentation is lacking 😅, but it takes you to an `Ask DeepWiki` prompt with the full mirai source code as context so you can ask questions (and get answers) in *any* language. Any feedback welcome! #rstats

Thanks to @paleolimbot.bsky.social's great work, the sedonadb R package is now also available to Windows via R-universe 🎉 I'm excited particularly because I believe sedonadb is the easiest tool for R users to access GeoParquet data. #rstats apache.r-universe.dev/sedonadb

Seriously cool stuff from @shikokuchuo.net on mirai+ellmer+shiny+httr2 with otel for telemetry at Shiny in Production! You can use it to improve the performance of your Shiny apps by getting really granular information about it what's going on! #rstats

mirai 2.5.1 released. mirai.r-lib.org This is a patch release, but brings a new synchronous mode: `daemons(sync = TRUE)` runs your code in the same process. This means you can now drop into a browser session *within* your mirai #rstats code! p.s. amazing hex stickers made by someone @posit.co!!

Take your plots from drab to fab! #ggplot2

Posit::conf(2025) "Purrrfectly parallel, purrrfectly distributed" The slides from the talk are available at: shikokuchuo-posit2025.share.connect.posit.cloud See why we now have parallel purrr, powered by mirai, and how to use it to distribute compute to other machines. #positconf2025 #tidyverse

Can't wait to see everyone at posit::conf(2025)!! Here's my annual "things to do" list for food, coffee, bakeries, and bars near conf! #positconf2025 #rstats docs.google.com/document/d/1...

I'm hoping you'll join our session on Strengthening the R Ecosystem at posit::conf(2025) on the Thursday morning! Find out about the hottest new thing in the tidyverse: "purrrfectly parallel, purrrfectly distributed" (yes, it's something about cats). #rstats #tidyverse #PositConf2025 pos.it/conf

{otel} + #rstats is becoming a crazy partnership. This project has driven me to use/write {promises} in ways that makes my 🧠 ache 😅. The reward is worth it! See you at #PositConf2025 where I'll talk about this in more detail

tidyverse blog: mirai 2.5.0 www.tidyverse.org/blog/2025/09... This milestone release delivers enhanced observability through OpenTelemetry, reproducible parallel RNG, and key user interface improvements. We’ve also packed in twice as many changes as usual! #Rstats #tidyverse

tidyverse blog: mirai 2.5.0 www.tidyverse.org/blog/2025/09... This milestone release delivers enhanced observability through OpenTelemetry, reproducible parallel RNG, and key user interface improvements. We’ve also packed in twice as many changes as usual! #Rstats #tidyverse

tidyverse blog: Breaking down language barriers in data science nanonext is a messaging and concurrency toolkit, connecting R to polyglot data science pipelines involving modules written in Python, Rust, Go and C++ etc. www.tidyverse.org/blog/2025/09... #RStats #tidyverse

If you'd like to contribute to the tidyverse or tidymodels packages -- or learn how to -- join us at the tidyverse developer day! There are some tickets left for underrepresented minorities. #RStats #RLadies More info in the blog post: www.tidyverse.org/blog/2025/07...

I'll be talking about Quarto at PyData in September. Focus will be on how Quarto can be used to get your Notebooks Analysis to the world easily, and under different forms. Don't hesitate to share anything you would like me to tackle, and if it relates I am happy to ! And maybe see you there !

We still have spots available for tidyverse dev day on Sept 19: www.tidyverse.org/blog/2025/07.... Please come along to contribute to the tidyverse and have a bunch of fun along the way! It's open to all, but is most convenient if you're coming to posit::conf or live near Atlanta #rstats

It's always a pleasure to present at useR, and I'm doing so virtually this year. Hit the following video to see how we've been upgrading async across the ecosystem at Posit, whether that's in #RShiny, the #tidyverse or our LLM tooling. #Rstats #user2025 youtu.be/sGLD8oVquho?...