Unlucky Launcher v0.1.0

Unlucky Launcher 0.1.0

Rust-native single-file Minecraft launcher: Slint + Metro UI, built-in AI agent
(chat / config edits / crash diagnosis) and an MCP server other agent tools can attach to.
No WebView, no bundled runtime, no JRE download needed to start the launcher itself.

Downloads

Platform	Asset	Notes
Windows 10/11 x64	unlucky-launcher-0.1.0-windows-x64.exe	single exe, double-click to run
Linux x64 (X11/Wayland)	unlucky-launcher-0.1.0-linux-x64.tar.gz	single binary inside, no installer
macOS 12+ Apple Silicon	unlucky-launcher-0.1.0-macos-arm64.tar.gz	single binary inside, no installer
macOS 12+ Intel	unlucky-launcher-0.1.0-macos-x64.tar.gz	single binary inside, no installer

LICENSE, NOTICE and README.md ship in every archive; on Windows they are attached to
this release next to the .exe (a lone exe cannot carry them), so the license terms travel
with the download on every platform.

Support matrix

Platform	Level	Runtime requirements
Windows 10/11 x64	first class	nothing beyond the OS (UCRT is part of Win10+)
macOS 12+ (arm64 / x64)	first class	nothing; unsigned build, see Gatekeeper note
Linux x64, X11	first class	libxkbcommon, fontconfig, libGL (or software renderer), libxcb
Linux x64, Wayland	supported	wayland-client, libxkbcommon, plus the X11 set for XWayland apps
Windows 8.1/8/7	unsupported	baseline was raised to Win10 (decision D21)
Android — Termux + X11	experimental, not promised	CLI only (build from source), GUI unverified; not part of this release matrix

Install

Windows — put the .exe anywhere and run it. Portable data lives next to the exe when a
portable.marker file is present, otherwise under %APPDATA%.

Linux

tar -xzf unlucky-launcher-0.1.0-linux-x64.tar.gz
cd unlucky-launcher-0.1.0-linux-x64
chmod +x unlucky-launcher && ./unlucky-launcher

macOS

tar -xzf unlucky-launcher-0.1.0-macos-arm64.tar.gz
cd unlucky-launcher-0.1.0-macos-arm64
xattr -d com.apple.quarantine unlucky-launcher   # unsigned build, Gatekeeper quarantine
chmod +x unlucky-launcher && ./unlucky-launcher

No GPU? Software renderer

The UI prefers OpenGL (femtovg) and falls back to Slint's CPU renderer when no usable GL
driver is present. Force it on any machine with:

unlucky-launcher --software-renderer          # or: SLINT_BACKEND=winit-software unlucky-launcher

Verify the download

# Linux / macOS
sha256sum -c SHA256SUMS.txt --ignore-missing
# Windows (PowerShell)
Get-FileHash .\unlucky-launcher-0.1.0-windows-x64.exe -Algorithm SHA256

Checksums

6cdd3c57b89548a4554c7f80191db169960e3bb2c892010ee63bdc55b5e8f223  unlucky-launcher-0.1.0-linux-x64.tar.gz
3d8da5d6fdbc83e35b70c1500376f1b4e9dc38af794b0399bb34784527ca84d2  unlucky-launcher-0.1.0-macos-arm64.tar.gz
82a2e5063daeb849db61c51cff7f6cc2a1459b6fe4f0d1ef301056cc7b6ea69c  unlucky-launcher-0.1.0-macos-x64.tar.gz
64fd864b13459b2be3640659337bbaa198fa4b8f046a85e27bf9060deb820ecf  unlucky-launcher-0.1.0-windows-x64.exe

Known limitations of this build

• Microsoft (MSA) account login depends on a Mojang app-id whitelist that is still pending;
  until it is granted, use offline accounts or authlib-injector (the 403 is reported with a
  readable diagnostic instead of a silent failure).
• Binaries are not code-signed / notarized yet: Windows SmartScreen and macOS Gatekeeper warn
  on first launch. Checksums above are the integrity reference for now.
• macOS ships the bare binary (single-file promise), not a .app bundle: no Dock icon or
  Finder double-click — launch it from a terminal.

License

Apache-2.0. Third-party notices (including Slint's Royalty-Free 2.0 track) are in NOTICE.
Unlucky Launcher is not affiliated with Mojang or Microsoft; it does not ship game files.

Made with Slint — Slint Royalty-Free 2.0 track, unmodified.