The four adb-driven tasks in build/android/Taskfile.yml began with
`adb uninstall {{.APP_ID}}`, where APP_ID defaulted to
"app.yellowjacket" -- the release id. `run` and `run:device` build the
*debug* variant, whose applicationIdSuffix makes it
"app.yellowjacket.dev", so both uninstalled the user's released app,
took the library with it, installed a different package, and then
failed to launch the one they had just removed.
The id is read back from the built APK now (scripts/android-pkgid.sh,
`aapt2 dump packagename`) rather than written down a second time, so
the thing installed and the thing launched agree by construction --
whatever Gradle resolved the applicationId to, suffixes included, is in
the file. An APK it cannot read is a hard failure and never a fallback
to a default; guessing is the bug. APP_ID survives with no default as
an *assertion*: it is checked against the artifact and refused, naming
both, before anything is installed or a target is even chosen.
The uninstall is gone rather than corrected. It was there to make the
bare `install` on the next line work at all -- Android refuses an
install over an existing package without -r -- so `install -r` removes
the reason for it. What is left is the one case an uninstall is really
the remedy, a changed signing certificate, and that is exactly the case
where doing it silently costs the user their library. So it is reported
with the command to run, which is the answer scripts/android-emulator.sh
had already reached for `make android-install`.
And the emulator tasks now say "emulator" to adb. A bare `adb install`
with one device attached picks that device whatever it is, so with a
phone plugged in and no emulator running, the task whose summary reads
"in the Android Emulator" installed on the phone -- the same data loss,
from the task whose name gives no warning. Several matching targets is
an error naming them rather than a silent pick of the first.
Closes #159
YellowJacket
Music how it was meant to bee.
YellowJacket is a fast, cross-platform desktop music player for your local collection. It plays your files, keeps your library tidy, and helps you discover and organize your music — all in a clean, responsive interface. No accounts, no streaming, no telemetry: just your music on your machine.
Runs on Linux, macOS, and Windows.
Features
Play your music
- Plays MP3, FLAC, OGG Vorbis, and WAV
- Play, pause, seek, and volume control with a mute toggle
- Gapless, glitch-free seeking backed by a read-ahead buffer
- A queue you can add to, reorder, and shuffle, with play-next support
- Shuffle and repeat (off / all / one)
- Picks up right where you left off — remembers your track, position, and volume between sessions
- Media-key and MPRIS support on Linux, so your desktop's playback controls just work
Keep your library organized
- Point it at your music folders and it scans them automatically
- Reads tags and embedded cover art, and de-duplicates artwork so it isn't stored twice
- Incremental sync — only new or changed files get reprocessed, and deleted files are cleaned up
- Browse by album, artist, or genre, or search across everything
- Mark favorites and see what you've been listening to with play history
- Edit track tags directly when something's off
Playlists
- Create playlists, drag tracks in, and reorder them
- Smart playlists that build themselves from rules (by genre, rating, play count, and more)
- Pin a default playlist and spot duplicate tracks at a glance
Discover and clean up (powered by MusicBrainz)
- Explore — browse artists, releases, and genres from the MusicBrainz catalog, not just what's already in your library
- Auto-tag — match your files against MusicBrainz to fill in correct artist, album, and track metadata, with a review step before anything is written
- Lyrics search — find a track by a line you remember
Install
Download the latest build for your platform from the releases page.
| Platform | Download |
|---|---|
| Linux | yellowjacket-linux-amd64 |
| macOS | yellowjacket-darwin-universal.app.zip (Apple Silicon + Intel) |
| Windows | yellowjacket-windows-amd64.exe |
Prefer to build it yourself? See Building from source.
Getting started
- Launch YellowJacket.
- Open Settings and add the folder(s) where your music lives.
- Let the initial scan finish — you'll see progress as it works.
- Browse by album, artist, or genre, queue something up, and press play.
Your library and settings are stored locally:
| Linux / macOS | Windows | |
|---|---|---|
| Config | ~/.config/yellowjacket/ |
%LOCALAPPDATA%\yellowjacket\config |
| Library data | ~/.local/share/yellowjacket/ |
%LOCALAPPDATA%\yellowjacket\data |
Building from source
YellowJacket is built with Go and a Lit/TypeScript frontend, bridged by the Wails framework.
Prerequisites
| Tool | Version |
|---|---|
| Go | 1.25+ |
| Node.js | 22+ |
| pnpm | 10+ |
| Wails CLI | v3 — vendored, no install needed (go tool wails3) |
The Wails v3 CLI resolves from the tool block in go.mod, so there is nothing
to install globally; make setup fetches it with the rest of the tooling.
On Linux, install the system libraries Wails needs. v3 builds against GTK4 + WebKitGTK 6.0 by default:
sudo apt-get install libasound2-dev libgtk-4-dev libwebkitgtk-6.0-dev # Debian/Ubuntu
sudo pacman -S alsa-lib gtk4 webkitgtk-6.0 # Arch
A machine without webkitgtk-6.0 can still build with -tags gtk3 against the
older WebKit2GTK 4.1 stack, but that is an escape hatch, not what CI or a
release builds.
macOS and Windows need no extra system packages. Run go tool wails3 doctor to
check your environment.
Build
make setup # install tooling and git hooks
make dev # run with hot-reload
make build-prod # produce a release binary
More detail for contributors lives in CLAUDE.md — the
architecture, the conventions and the reasons behind them. What is
being worked on is the issue
tracker; #73 is the
roadmap.