Who Killed the Build? A Halloween DevTools Murder Mystery with Flox
Hosted by AI Valley + Courtney Ko + Justin Castilla
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What to look forward to
AI Valley and developer-tool company Flox will host an interactive Halloween murder mystery, where attendees investigate a broken build, uncover clues about dependencies and environment drift, and see how Flox creates reproducible software environments across laptops, CI, and production. The evening will also feature real developer horror stories and a Halloween mixer.
Inside the event
Who Killed the Build? 💀
A Halloween DevTools Murder Mystery with Flox
The build is dead. The cause? Unknown.
Join AI Valley and Flox for a Halloween devtools night where you’ll investigate what went wrong, follow the clues, and figure out who (or what) killed the build.
Instead of a traditional product demo, Flox will take us through an interactive investigation of a broken development environment. Along the way, you’ll uncover suspicious dependencies, environment issues, and other clues before making your final guess.
🔎 Investigate the crime scene
💻 See Flox in action
🕵️ Follow the clues and solve the mystery
🎃 Enjoy Halloween food, drinks, and networking
Costumes are encouraged. Production incidents are not.
Meet the Speakers
- Justin Castilla — Flox
- Jessica Garson Beauchemin — Runpod
- Amin Karbas — Resolve AI
- Dan Gross — FriendliAI
Agenda
5:00–6:00 PM — Doors Open + Halloween Food, Drinks & Networking
6:00–6:10 PM — The Crime Scene: Welcome from AI Valley + Flox and meet the speakers
6:10–7:00 PM — The Investigation: Talks and demos with Justin Castilla (Flox), Jessica Garson Beauchemin (Runpod), Amin Karbas (Resolve AI), and Dan Gross (FriendliAI), with clues revealed throughout
7:00–8:00 PM — Halloween Mixer + Food, Drinks & Networking
About HAC
Hanwha AI Center (HAC) is a private membership for all those dedicated to AI. As a hub for innovation, HAC brings together passionate entrepreneurs, researchers, and visionaries to explore the societal and technological impacts of AI on human life.
Flox is a developer tool that creates reproducible, hash-pinned software environments across laptops, CI pipelines, and production. It eliminates environment drift by using a single configuration file to lock exact software versions everywhere. Flox is powered by the Nix package manager, but simplifies the experience so users do not have to write Nix code directly.
AI Valley is a community rooted in supporting exceptional first generation builders, founders, and creators. We curate environments where ambitious people meet collaborators, mentors, and opportunities through hackathons, workshops, and intimate gatherings across AI, tech, and the arts. If you care about who you build with as much as what you build, this is your place.
🌐 Website: https://aivalley.io
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San Francisco, CA
Venue listed by the organizer · San Francisco, CA. Confirm the final address before traveling.
Open in Google Maps ↗Discovered through Cerebral Valley. Details come from the event listing and the organizer page; registration is managed by the organizer.
Last checked: Nov 2, 2026. Confirm current availability before making plans.
Organizer page checked: Oct 26, 2026. Check registration for the latest details.