• Go 1.25.3 and 1.24.9 released
• 🪲 Blog:  How we found a bug in Go's arm64 compiler by Thea Heinen
• zsh support progress for sh
• 🇺🇸 Go meetup & live episode @ San Francisco
• 🌩️ Lightning round
  • qjs, a CGO-Free, modern, secure JavaScript runtime for Go applications
  • 📺 Kaizen, watch anime from the terminal

• Security releases
  • 🍪 Go 1.25.2 and 1.24.8 with 10 security fixes
  • 🌐 golang.org/x/net v0.45.0 with 2 security fixes
• Meetups @ Conferences
  • 🇺🇸 San Fransisco, CA, USA — Oct 23 @ Forge
  • 🇮🇱 Tel Aviv, Israel — Dec 10 @ Cato Networks
  • 🇺🇸 GoWest @ Lehi, Utah USA — Oct 24
• 🧦 New swag in the Cup o' Go store!
• Proposals
  • 👷🏿‍♀️ Accepted: go fix to apply fixes from modernizers and gofix analyzers
  • On hold: Add experimental HTTP/3 support
• 👖 gofumpt: Should clothing naked returns be put behind `-extra`?

• Conference videos
  • 🇬🇧 GopherCon UK
  • FyneConf
• Proposals
  • 💧 Accepted: add new goroutine leak profile as a GOEXPERIMENT
    • Full discussion of this feature in Episode 127
  • 🪿 Added to minutes: add GOOS=noos bare metal support
  • 🫣 Added to minutes: Add bytes.Buffer.Peek
  • 👍 Added to minutes: Add must.Do
• Blog posts
  • ✈️ Go blog: Flight Recorder in Go 1.25 by Carlos Amedee and Michael Knyszek
  • 🫖 We tried Go's experimental Green Tea garbage collector and it didn't help performance by Zach Musgrave
• do v2.0.0 released, dependency injection toolkit for Go
• 🌩️ Lightning Round
  • Watermill 1.5 Released
  • Sweet Fyne apps
    • supersonic
    • Bounce presentation
  • modgen, static generator for Go module vanity URLs

• Meetups and Conferences
  • 🇺🇸 Go Meetup in San Francisco, Oct 23 @ Forge
  • 🇺🇸 GoWest, Oct 24 @ Lehi, Utah USA
  • 🇳🇬 GopherCon Africa, Oct 24 & 25 @ Lagos, Nigeria
  • 🇷🇺 LetsGoConf followup post on Telegram
• Proposals
  • ⚠️ Accepted: errors.AsType (As with type parameters)
  • 💧 runtime/pprof,runtime: new goroutine leak profile
  • New: direct reference to embedded fields in struct literals
• 🌩️ Lighting Round
  • golangci-lint v2.5.0 released
  • Blog: Building Conway's Game of Life in Go with raylib-go by Tim Little
  • Blog: vacuum gets a facelift by quobix

Thanks Gabriel Augendre for guest co-hosting this episode!

Visit cupogo.dev for all the links.

• 🔬 A new experimental Go API for JSON
• 🧾 2025 Go Developer Survey
• 🥸 Test state, not interactions by Redowan
• 😴 Go team quiet week Sep 22–Sep 26
• ⛓️‍💥 The Day the Linter Broke My Code

Interview with Matt Boyle

• Find Matt on X
• Ona
• ByteSizeGo
• Functional options for friendly APIs

• Go 1.25.1 and Go 1.24.7 are released
• 🇩🇪 GopherCon Europe: Berlin 2025 videos online
• ⏱️ Blog: Testing Time (and other asynchronicities) by Damien Neil
  • Video: Testing Time (and other asynchronous code)
• 👖 gofumpt v0.9.0 released
  • Video: Go's Naked Returns: Be afraid!
• 🗳️ Blog: Building Bulletproof Leader Election in Kubernetes Operators: A Deep Dive by Ishai Shor
• Proposals
  • Accepted: deprecate x/net/context package
  • 👈 Likely accept: spec: expression to create pointer to simple types
• Jonathan is available for fractional Gopher work!
• Lightning Round
  • github.com/jackc/pgx/v5 v5.7.6 released
  • 👕 Gopher themed Hawaiian shirt designs
  • New "official" fork of Go YAML library

This episode is sponsored by Boldly Go! Need fractional Gophering work? Visit boldlygo.tech.

For everything Cup o' Go, incl. swag, Patreon, past episodes, and more, please visit our website.

• GopherCon 2026 location poll
• GopherCon India
• GOMAXPROCS
• Course: "Introducing Command Line Applications in Go"
• SQLite benchmarks

• 🥩 Meatspace
  • 🇺🇸 Going to GopherCon in NYC? Meet other Cup'o'Gophers there!
  • 🇺🇸 Interested in a SF meetup? Fill out the poll
  • 🇷🇺 Let's GoConf, Sept 12 @ Moscow, Russia
• GopherJS 1.19 with generics released
  • Interview with Grant Nelson, Episode 53
• Proposals
  • Accepted: x/tools/go/analysis/structtag: stricter JSON tag checking
    • Previous mention: Episode 117
  • New: errors: As with type parameters
  • New: x/net/context: deprecate package or symbols in package, and potentially tag/delete
• Lightning Round
  • 🐐 GoAT: Go ASCII TOOL
  • 🍰 Blog: Fun With Golang Slices by Monique Mudama

• Go 1.25 is released
  • 🛠️ x/tools contains public packages that fail to build with Go 1.25.0
• 🧱 Building blocks for idiomatic Go pipelines by Anton Zhiyanov
• GopherCon USA, Aug 26-28 in New York
• 🌩️ Lightning Round
  • outrig

Visit https://cupogo.dev/ for all things Cup o' Go!

• [security] Go 1.24.6 and Go 1.23.12 are released
• Microsoft build of Go Telemetry – Helping Us Build Better Tools
• Go Assembly Mutation Testing
• GitLab catches MongoDB Go module supply chain attack
• Break:
  • Jonathan's streaming again on Twitch
• George Adams interview
  • Microsoft devblogs