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ILX Launcher – a developer cockpit for Python apps (hot reload, crash capture)

ILX Studio released ILX Launcher, a developer cockpit for Python desktop apps that provides hot reload, crash capture, and a local-LLM coding assistant in a single persistent window. The tool eliminates the need for multiple terminal windows by managing interpreters, dependencies, testing, and builds, and is available as an open-source project on GitHub.

read3 min views1 publishedJun 22, 2026
ILX Launcher – a developer cockpit for Python apps (hot reload, crash capture)
Image: source

A developer cockpit for running, hot-re, testing, and shipping Python desktop apps.

Point it at any project with a main.py

. It runs your app as a child process, watches source files, hot-patches live edits, captures crashes, manages interpreters and dependencies, builds an EXE, and gives you a local-LLM coding assistant — all from one window that stays open while you work.

One window. Start, reload, test, debug, build, ship — without ever touching a terminal.

Running a Python desktop app while you develop usually means:

  • A terminal you keep switching to and from
  • A manual restart on every edit (even a one-liner)
  • Separate windows for pip, tests, profiling, and builds
  • Tracebacks in one of five terminal windows — you're not sure which
  • No safety net when a memory leak or infinite loop runs away with your machine

The ILX Launcher folds all of that into one persistent window.

git clone https://github.com/ilxstudio/ILX-Launcher
cd ILX-Launcher
python main.py

No install step. No third-party dependencies. Just Python 3.11+ with tkinter.

Windows EXE— build a standalonelauncher.exe

from inside the launcher (Build EXE button), or:

pip install pyinstaller
pyinstaller --onefile --windowed --name launcher main.py
Feature What it does
Start / Restart / Refresh
Run main.py as a child process; restart or hot-reload on save
Hot patch
Live function reload via

**Coder (LLM)**Interpreters.venv

, bundled CPython on demandDependenciesTestsBuild EXELogsCrash historyProfilerQualityGitAutomationWatchdogLive REPL* running*app to inspect live state| Coder (LLM workspace) | Crash history | |---|---|

Logs + Procfile Git
  • Python 3.11+ with tkinter (ships with python.org installer on Windows/macOS; sudo apt install python3-tk

on some Linux) - No third-party runtime dependencies in the launcher itself — pure stdlib + tkinter

  • Optional tools (hot patch, builds, lint, profiling, LLM) install into the target project'sinterpreter on demand - LLM features need a local Ollamaserver (optional)
main.py                # entry point (~50 lines, dispatches to ui/)
version.py             # VERSION = "1.1.0"
core/
  state.py             # all shared globals
  config.py            # load/save settings
  interpreter.py       # Python resolution; fork-bomb guard
  process.py           # child process, watchdog, crash DB, hot-patch
  build.py             # PyInstaller + Inno Setup
  coder.py             # LLM edit/chat/review engine
  automation.py        # tests, quality, scaffold, SQLite, matrix
  ollama.py            # streaming Ollama client
  repl.py              # live REPL socket
  notifications.py     # Windows tray balloon
  diagnostics.py       # screenshot, py-spy
ui/
  main_window.py       # launcher main window + tick loop
  coder_window.py      # Coder window
  config_window.py     # Configuration window
  tool_windows.py      # Deps, Quality, Git, Profile, Logs, Crashes, Automation, RunConfigs
  theme.py             # fonts, styles, syntax highlighting, shared widgets
assets/
docs/
  LAUNCHER_MANUAL.md   # full user manual with screenshots
  whitepaper.md        # technical narrative: why we built this
  img/                 # manual screenshots
.github/
  workflows/ci.yml     # smoke-test on push
  ISSUE_TEMPLATE/      # bug report + feature request templates
  PULL_REQUEST_TEMPLATE.md
CONTRIBUTING.md
CHANGELOG.md
requirements.txt       # OPTIONAL tools the launcher drives (not imported by it)

Settings persist to ~/.ilx_launcher.json

— recent projects, per-project interpreters, run configs, watchdog thresholds, all options. Configuration → Save writes it live.

Per-machine runtime files (.launcher_crashes.db

, .launcher_session.log

, .window_geometry.json

) are git-ignored.

Fork-bomb safe when frozen:tool_python()

never returns the launcher EXE itself; callers skip rather than spawn.Zero third-party imports in the launcher:psutil

,jurigged

,requests

, etc. runinside the target project's interpreter, not the launcher's.Permissive licenses only: MIT / BSD / Apache / PSF / OFL. No GPL/LGPL/copyleft — the launcher is part of a sold product.** ASCII-only**: em-dashes and ellipsis crash Windows cp1252 in frozen builds.print()

See docs/whitepaper.md for the full technical narrative, and CONTRIBUTING.md for the code rules.

MIT (c) 2026 ILX Studio, LLC

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