Tim Sneath

Developer tools and frameworks at Apple. I aspire to build delightful products, and to make others smile.

[Tim Sneath @timsneath]

@twostraws I’ve been having a ton of fun with Ignite for some internal projects. It’s particularly fun that Opus is just as good with it as with something like Astro, but of course Ignite is so much more… swift!

[Tim Sneath @timsneath]

"The latest version of NetNewsWire for iOS supports iPhone Duo... We were already using standard controls... and paying attention to size classes... We built the app using Xcode 27.1 and the default iOS SDK that comes with it, and that’s it." https://t.co/j10ycfO656

[John Ternus @johnternus]

@finkd Congrats to the team! Amazing to run a model of Muse Spark Open's caliber and scale this efficiently, right from your desk. Mac Studio keeps pushing the boundaries of on-device AI!

[Tim Sneath @timsneath]

@ivatokar Loving your recent flourish of posts, @ivatokar. Keep them up!

[Vincent Pradeilles @v_pradeilles]

If you're using Claude Code, Codex or Cursor to prototype for the iPhone Duo, make sure to run this command, with the argument underlined in red

Because Xcode 27.1 ships with updated coding skills that specifically detail how to handle app resistibility for the iPhone Duo

[Tim Sneath @timsneath]

The trend is continuing of big apps moving native to take advantage of the lack of abstraction and full platform access. Who else?

[Mustafa Ali @mustafa01ali]

Coinbase is going native too. Judging by how many teams reached out after our native announcement, expect more of these soon.

[Tim Sneath @timsneath]

@pepinaux Major improvements here in the latest Swift release, which is included in Xcode 27. See this segment: https://t.co/EwlSB0o1zB

[Tim Sneath @timsneath]

Xcode 27 exposes 50+ tools that agents can use via MCP to create, build, configure, test, and debug. Here's a useful reference list of what's available to agents like Claude, Antigravity, and Codex.

[Ivan Tokar @ivatokar]

Swift 6.4 has a couple of changes that make Swift outside Apple platforms feel more deliberate.

Swift Build is now the default build engine in SwiftPM, so the same build system is used across macOS, Linux and Windows. Subprocess also reached 1.0, giving Swift a stable cross-platform API for launching and interacting with processes.

Neither feature is flashy, but together they remove some of the “platform-specific glue” that CLI, server-side and cross-platform Swift projects have historically needed.

That is the part of Swift 6.4 I find most interesting: the tooling around the language is becoming more portable, not just the language itself.

#Swift #ServerSideSwift

https://t.co/K0Z3ofsLTf

[Tim Sneath @timsneath]

@FloellaBenjamin You were the real queen of my childhood. Thank you for broadening the perspective of this white kid, for being the fun lady with the braided hair, for being a trailblazer and a teacher. With ❤️ from a #Playschool baby.

[Tim Sneath @timsneath]

“Swift 6.4 unifies building across Linux, macOS, Windows”: nice article from
@TheRegister on Swift progress.
https://t.co/y9QnANNJly

[Tim Sneath @timsneath]

I think this might be what folk are waiting for? 😉 https://t.co/Laph8AsNfJ

[Tim Sneath @timsneath]

https://t.co/BlbzDsmG7D

[Tim Sneath @timsneath]

Well spotted, and thank you for recognizing the hard work of the team, @twostraws! JSON should be easier to manage in source control, more readable for humans, and easier for agents to work with. Exciting times for Xcode.

[Paul Hudson @twostraws]

I don't think I ever swear on social media, but this one is worth it: holy shit! A JSON-based project format for Xcode! 🤯

[Tim Sneath @timsneath]

Such an exciting week for Swift developers, with the first beta of Vapor 5: https://t.co/ChonMRu7Jh @0xTim

[Tim Sneath @timsneath]

All the good stuff in Swift 6.4, now available across all platforms:
https://t.co/oOvG9YCMi6

[Tim Sneath @timsneath]

@ChrisMack_ Xcode 27.1 beta includes support for iPhone Duo. All the details on getting ready for iPhone Duo are here: https://t.co/2Xvu5Jttkp

[Tim Sneath @timsneath]

Xcode 27 is here! Three useful tips for writing apps for Apple platforms with agents like Claude: 🧵

[Tim Sneath @timsneath]

3/ Apple's developer docs are available as clean Markdown, ideal for coding agents. Add this Gist to your CLAUDE.md to teach your agent how to find them: https://t.co/zsuix356ZX (h/t @luka_bernardi).

[Tim Sneath @timsneath]

2/ Xcode 27 ships 10 handwritten skills with best practices for app development and modernization. Export them to read yourself or drop into any agent with:
xcrun agent skills export