day-build

Build-script codegen for Day apps: every bundled resource becomes a typed Rust constant.

An app's build.rs calls day_build::generate_resources(), which scans the project's resource/ folder and generates a res module: a constant per image (res::images::logo), per data file, and per bundled font, plus one function per localized string — res::str::greeting(name) instead of a bare string key. Rename a file or forget a translation argument and the app stops compiling, which is exactly when you want to hear about it.

The crate also owns the naming rules the day CLI follows when it stages resources into each platform's native format, so the constant in your code and the file on the device can never disagree.

It is a normal [build-dependencies] entry, generated for you by day new.

Part of Day

This crate is one piece of Day, a Rust framework for building apps out of each platform's real native widgets — AppKit, UIKit, Android's Material widgets, GTK 4, Qt 6, XAML, and ArkUI — from one codebase. There is no web view and no bundled rendering engine: when you write button("Save"), macOS shows an NSButton and Android shows a Material button.

New to Day? Start at daybrite.dev, or browse the source repository.