Prmpt

A desktop terminal emulator. Tauri 2 shell, Ghostty's VT engine driving terminal state, custom WebGL2 renderer in the webview.

The 1024×1024 source for the app icon lives at assets/icon.png (borderless, works on every platform); the per-platform icon set under src-tauri/icons/ is regenerated from it via bun tauri icon assets/icon.png.

Toolchain

• Rust ≥ 1.93 (MSRV from libghostty-vt)
• Zig 0.15.x in PATH (the vendored libghostty-vt-sys invokes zig at build time; Homebrew's zig works)
• Bun ≥ 1.1 (ships its own runtime, no separate Node install needed)
• Tauri 2 CLI

Build & run

bun install                       # once
cd src-tauri && cargo check       # type-check the Rust backend
bun run build                     # type-check + bundle the frontend
bun tauri dev                     # launch the app

Layout

Path	Role
src/	TypeScript frontend: WebGL2 renderer, glyph atlas, IPC bindings, tab/input handling
src-tauri/	Rust backend: per-tab thread driving libghostty-vt + portable-pty, Tauri command handlers
index.html	Single-page shell

Where things live at runtime

• Data dir — auto-generated on first run; delete config.toml to reset to defaults:

  • macOS: ~/Library/Application Support/Prmpt/
  • Linux: ~/.config/Prmpt/ (or $XDG_CONFIG_HOME/Prmpt/)
  • Windows: %APPDATA%\Prmpt\ (i.e. …\AppData\Roaming\Prmpt\)

  Holds config.toml, prmpt.db, stronghold.key, prmpt.stronghold. On upgrade from earlier versions, files are migrated automatically from the legacy de.dss-net.prmpt / dss-net\prmpt folders.

• Compiled frontend: dist/

• Cargo target: src-tauri/target/

Renderer

Default is WebGL2 (instanced quads, glyph atlas baked into a 2048×2048 RGBA texture). A Canvas2D fallback is available with ?renderer=2d in the dev URL.

License

Copyright © 2026 Digital Services Stephan

This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. See LICENSE for the full text.