“We don’t have a contest culture”. Ok buddy, sure, but you: - only hire “top talent” - reward individuals, not teams - fire low performers - have a Wins channel where you “celebrate” individuals - laser focus on KPIs/OKRs - don’t hire juniors - do RIFs vs retraining Guess what! Contest cultures!

Neat blog series from Mounir Boudraa about how they're using Circuit with native SwiftUI for their KMP iOS apps! www.quo.com/blog/moderni...

Metro 0.9.0 is a big performance release focused on optimizing generated graphs! github.com/ZacSweers/metro/re...

This could, and I'm not overstating this, save human kind

✨📊 Refreshed the Metro performance docs page with new benchmark results (both build and runtime) and interactive charts. Pretty happy with how this came out and the next release should have some nice improvements to runtime perf and reduced graph code gen size. zacsweers.github.io/metro/0.9.0-...

circuit-retained is dead, long live circuit-retained

Someone in the KMP live stream chat today asked if Circuit was still safe to use now that I'm no longer at Slack. It is! I'm still co-maintaining it with Josh Stagg (who is awesome and been behind a lot of Circuit's recent releases)

Metro 0.8.0 is a huge release! - Graph analysis tooling in both the compiler and gradle plugin - Removed deprecated runtime APIs - New MetroX Android and ViewModel artifacts - Broadened member injection support - Bunch of other bugfixes, improvements, etc github.com/ZacSweers/me...

Vibe coded some new visualization tooling into Metro using Apache ECharts ✨ Behold: CatchUp's DI graph

Want to advance your career as an Android developer by learning Kotlin Multiplatform (KMP)? Learn from LEGENDS like Jake Wharton, Philipp Lackner, @zacsweers.dev, @russhwolf.com, @marcogomiero.com , and @chriskrueger.dev. More info and register here: info.jetbrains.com/kotlin-lives...

Our tiny little island just qualified for the World Cup 🇨🇼🥲

The build performance results 😍🫶

I've been on the program committee for droidconNYC for a few years now and attendee for nearly decade. I understand why they felt like staying in NYC wasn't financially viable, but moving to Florida (let alone Orlando) is such a disappointing decision, especially for LGBTQ+ members of the community

MoshiX 0.33.0 drops the need for proguard rule generation, meaning you can use it and its IR code gen entirely without needing KSP 🎉 github.com/ZacSweers/Mo...

This is fantastic and @zacsweers.dev deserves all the praise but it also is gonna give you a false idea of what Z is like as a maintainer and author, what the project is like, and how you might achieve something like this yourself

Metro 0.7.5 has the Guice github.com/ZacSweers/me...

Excited to share Metro's original design doc. Pulls back the curtain on a lot of the historical community feedback and discussions that went into it in its early days! www.zacsweers.dev/metros-desig...

Zohran Mamdani in his victory speech: "Donald Trump, since I know you're watching, I have four words for you: Turn the volume up." The cheers in the room are deafening.

Metro 0.7.3 adds member injection interop, Kotlin 2.3.0-Beta2 support, and a bunch of other smaller goodies and fixes. github.com/ZacSweers/me...

Traveling to London tonight, but Metro 0.7.2 should mostly work with Kotlin 2.3.0-Beta2. There’s on API change that affects logging but is fixed in snapshots, will cut a new release prolly tomorrow after I fix a separate dagger multibinding interop issue.

School shootings and measles

Metro 0.7.1 improves diagnostic messages for missing dependencies and multibinding code gen optimizations. github.com/ZacSweers/me...

Metro 0.7.0 is out with dynamic graphs, implicit injects, and wasmWasi targets! Dynamic graphs have been a long time in the making and should unlock some pretty powerful testing patterns. github.com/ZacSweers/me...

Metro 0.6.10 introduces some new optional behaviors, interop with @BindsOptionalOf, and the usual host of other fixes and improvements! github.com/ZacSweers/me...

What a crock of shit from Marc Benioff — who appears willfully ignorant of news and facts and so thirsty for approval and attention from the Trump tech bros (who in the past mocked him relentlessly) that he is soiling himself in public www.nytimes.com/2025/10/10/u...

I left Slack for a few reasons and Marc was two of them. www.nytimes.com/2025/10/10/u...

There it is!

Was on @codewiththeitalians.it today with @sebastiano.dev and Ivan chatting about Metro and some of the more nitty gritty of how the newer IDE features work! Some fun live coding www.twitch.tv/videos/25864...

Metro 0.6.9 is out now with improved cross-compiler version support, support for Kotlin 2.3.0-Beta1, improved IDE support, configurable max error reporting, and a whole bunch more! github.com/ZacSweers/me...

From 1939-1945 German officers also listened to speeches from civilians about how the laws of war didn’t apply to them. And then they participated in the Holocaust, starved millions of prisoners of war, destroyed villages and cities, and were defeated.

Metro 0.6.7 brings a dedicated `@AssistedInject` annotation, Dagger module interop, and a bunch of other goodies! github.com/ZacSweers/me...

Designers when an android engineer ask to just use the system back arrow: “our custom back arrow is an expression of our brand, we cannot yield to looking like a Google app” Designers when Liquid Glass looks like shit everywhere in their app: “LEROY JENKINSSSSSSS”

Suddenly "hate speech" is bad. Suddenly "dehumanizing" people is bad. Suddenly "cancel culture" is good. Suddenly words have consequences. The modern American right in 2025, folks.

> the shooter is trans > ok the bullets were trans > ok the roommate is trans

Every tech CEO handling moderation this week 🤦‍♂️

Video is already up (!!) youtu.be/jVfmtVKa604?...

Here are the slides for the "Navigating Dependency Injection with Metro" talk I just gave at DroidKaigi. Great conference and super well-organized. speakerdeck.com/zacsweers/na...

Navigating Dependency Injection with Metro by @zacsweers.dev at #DroidKaigi

Couple Metro patches today! 0.6.5 - new @Origin annotation API + a bugfix 0.6.6 - same as 0.6.5 but targeting Kotlin 2.2.20 and another fix for conflicting overrides that relies on a fix in the compiler that came in 2.2.20 github.com/ZacSweers/me... github.com/ZacSweers/me...

What a surprise www.theverge.com/news/773928/...

Today I ran a race down 5th ave, hung out in Central Park, got coffee in Hell’s Kitchen, played soccer in east river park, got bbq in Williamsburg, and now flying to Tokyo from JFK. Life in NYC’s feeling very rich today

Our KMP framework App Platform now supports Metro out of the box: github.com/amzn/app-pla... @zacsweers.dev is pushing the boundaries with Metro and there are still some Kotlin compiler bugs that need to be resolved, but on the JVM / Android it works.

Crenshaw's district in Houston is literally gerrymandered in such a way to avoid including Greenspoint, a neighborhood locally nicknamed Gunpoint.

Killing their own children to own the libs

Slack people were affected by this too, and not just customer service roles. The AI claim is obviously bogus. Tech media should do better than just accept claims like this at face value, make CEOs own (the consequences of) their decisions. www.nbcbayarea.com/news/local/s...

Google product development in 2025

Wrote a lot of thoughts on junior developers, AI, and what I strongly feel is going to become the defining challenge of our industry's next generation. www.zacsweers.dev/forklifts-re...

Still a miler at 33

Metro 0.6.0 is out now with revamped graph extensions, lazier validation, a bunch of improvements to Dagger interop, and a ton of bugfixes! The biggest change here is graph extensions are no longer detached and wired much more like dagger subcomponents now. github.com/ZacSweers/me...

Can't say they didn't warn us