23: Shipping Violently w/ Justin Moon

April 13, 2026 · 1h 40m

About this episode

Gigi and Justin Moon discuss the development of a hackable mobile operating system and the challenges of Android customization.

“I want to optimize for hackability and customization.” Justin Moon & Gigi take a walk in Madeira. Recorded during SEC-07 . Listen on sovereignengineering.io In this dialogue: Justin’s new obsession: building Shadow, a hackable mobile operating system for people who want full control over the stack Why Android is interesting again: not because it’s clean, but because it is at least open enough to fight with Android file chaos, and the immortal “file saved successfully” meme One wallet, one relay connection, one shared set of primitives at the OS level, instead of every app reinventing the same mess The “UNIX tools of Nostr” idea, revisited from #07: Zig Multiplatform w/ Justin Booting a phone with less Android, then turning Android off piece by piece once the system is running Early signs of life for Shadow: Kosti successfully compiled and ran it From 13-second button clicks to instant GPU rendering, and why that counts as real progress Ricing phones like Linux desktops, with the usual Typecraft explainer and awesome-ricing rabbit hole Why Justin chose TypeScript apps on top of a Rust core: make the parts you should not vibe-code solid, and let users vibe-code the rest Apps…

People in this episode

Host: Gigi

Guest: Justin Moon

Topics covered

hackable mobile operating system
Android customization
UNIX tools
TypeScript and Rust
app store alternatives
software dematerialization

Keywords

hackability
customization
mobile operating system
Android chaos
TypeScript
Rust
app store
software

Mentioned in this episode

Organizations: Shadow, Android, Typecraft, Nostr

Books & works: sovereignengineering.io

Places: Madeira