first setup of piano-visualizer on pianonix

pkgs/piano-led-visualizer/default.nix

@@ -0,0 +1,60 @@
+{
+  lib,
+  python3,
+  fetchFromGitHub,
+  ...
+}: let
+  pythonPackages = python3.pkgs;
+in
+  pythonPackages.buildPythonApplication rec {
+    pname = "piano-led-visualizer";
+    version = "1.6";
+
+    src = fetchFromGitHub {
+      owner = "onlaj";
+      repo = "Piano-LED-Visualizer";
+      rev = "v${version}";
+      sha256 = "sha256-SkNNu2pqVG40HBZZYJMCCKiRj1h1QdkteaPR3Ek2P7I=";
+    };
+
+    patches = [
+      ./fix-log-dir.patch
+    ];
+
+    propagatedBuildInputs = with pythonPackages; [
+      setuptools
+
+      numpy
+      pillow
+      flask
+      rpi-gpio
+      webcolors
+      psutil
+      mido
+      rtmidi-python
+      spidev
+      waitress
+      websockets
+      werkzeug
+      # rpi_ws281x
+    ];
+
+    format = "setuptools";
+
+    preBuild = ''
+      cp ${./setup.py} setup.py
+      sed -i 's/PLACEHOLDER_VERSION/${version}/' setup.py
+    '';
+
+    postInstall = ''
+      mv -v $out/bin/visualizer.py $out/bin/piano-led-visualizer
+    '';
+
+    meta = with lib; {
+      description = "Piano LED Visualizer for Raspberry Pi";
+      homepage = "https://github.com/onlaj/Piano-LED-Visualizer";
+      license = licenses.gpl3;
+      maintainers = [];
+      platforms = platforms.linux;
+    };
+  }

pkgs/piano-led-visualizer/fix-log-dir.patch

@@ -0,0 +1,24 @@
+diff --git a/lib/log_setup.py b/lib/log_setup.py
+index 34f9156..e164d14 100644
+--- a/lib/log_setup.py
++++ b/lib/log_setup.py
+@@ -1,6 +1,7 @@
+ import logging
+ from logging.handlers import RotatingFileHandler
+ import sys
++import os
+ 
+ # Create a custom logger
+ logger = logging.getLogger("my_app")
+@@ -10,7 +11,10 @@ logger.setLevel(logging.DEBUG)
+ 
+ # Create handlers
+ console_handler = logging.StreamHandler()
+-file_handler = RotatingFileHandler('/home/Piano-LED-Visualizer/visualizer.log', maxBytes=500000, backupCount=10)
++
++log_path = os.path.expanduser('~/Piano-LED-Visualizer/visualizer.log')
++os.makedirs(os.path.dirname(log_path), exist_ok=True)
++file_handler = RotatingFileHandler(log_path, maxBytes=500000, backupCount=10)
+ 
+ 
+ # Set the level for handlers

pkgs/piano-led-visualizer/setup.py

@@ -0,0 +1,24 @@
+from setuptools import setup, find_packages
+
+setup(
+    name="piano_led_visualizer",
+    version="PLACEHOLDER_VERSION",
+    py_modules=["visualizer"],
+    packages=find_packages(),  # includes all packages with __init__.py
+    install_requires=[
+        "numpy",
+        "pillow",
+        "flask",
+        "rpi-gpio",
+        "webcolors",
+        "psutil",
+        "mido",
+        "rtmidi",
+        "spidev",
+        "waitress",
+        "websockets",
+        "werkzeug",
+        "rpi_ws281x",
+    ],
+    scripts=["visualizer.py"],
+)