Merge pull request #152471 from fooker/pr/k40-whisperer-init

k40-whisperer: init at 0.59

nixos/doc/manual/from_md/release-notes/rl-2205.section.xml

···
       </listitem>
       <listitem>
         <para>
+          <link xlink:href="https://www.scorchworks.com/K40whisperer/k40whisperer.html">K40-Whisperer</link>,
+          a program to control cheap Chinese laser cutters. Available as
+          <link xlink:href="options.html#opt-programs.k4-whisperer.enable">programs.k40-whisperer.enable</link>.
+          Users must add themselves to the <literal>k40</literal> group
+          to be able to access the device.
+        </para>
+      </listitem>
+      <listitem>
+        <para>
           <link xlink:href="https://github.com/mgumz/mtr-exporter">mtr-exporter</link>,
           a Prometheus exporter for mtr metrics. Available as
           <link xlink:href="options.html#opt-services.mtr-exporter.enable">services.mtr-exporter</link>.

nixos/doc/manual/release-notes/rl-2205.section.md

···
 
 - [maddy](https://maddy.email), a composable all-in-one mail server. Available as [services.maddy](options.html#opt-services.maddy.enable).
 
+- [K40-Whisperer](https://www.scorchworks.com/K40whisperer/k40whisperer.html), a program to control cheap Chinese laser cutters. Available as [programs.k40-whisperer.enable](options.html#opt-programs.k4-whisperer.enable). Users must add themselves to the `k40` group to be able to access the device.
+
 - [mtr-exporter](https://github.com/mgumz/mtr-exporter), a Prometheus exporter for mtr metrics. Available as [services.mtr-exporter](options.html#opt-services.mtr-exporter.enable).
 
 - [tetrd](https://tetrd.app), share your internet connection from your device to your PC and vice versa through a USB cable. Available at [services.tetrd](#opt-services.tetrd.enable).

nixos/modules/module-list.nix

···
   ./programs/iftop.nix
   ./programs/iotop.nix
   ./programs/java.nix
+  ./programs/k40-whisperer.nix
   ./programs/kdeconnect.nix
   ./programs/kbdlight.nix
   ./programs/less.nix

nixos/modules/programs/k40-whisperer.nix

···
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.programs.k40-whisperer;
+  pkg = cfg.package.override {
+    udevGroup = cfg.group;
+  };
+in
+{
+  options.programs.k40-whisperer = {
+    enable = mkEnableOption "K40-Whisperer";
+
+    group = mkOption {
+      type = types.str;
+      description = ''
+        Group assigned to the device when connected.
+      '';
+      default = "k40";
+    };
+
+    package = mkOption {
+      type = types.package;
+      default = pkgs.k40-whisperer;
+      defaultText = literalExpression "pkgs.k40-whisperer";
+      example = literalExpression "pkgs.k40-whisperer";
+      description = ''
+        K40 Whisperer package to use.
+      '';
+    };
+  };
+
+  config = mkIf cfg.enable {
+    users.groups.${cfg.group} = {};
+
+    environment.systemPackages = [ pkg ];
+    services.udev.packages = [ pkg ];
+  };
+}

pkgs/applications/misc/k40-whisperer/default.nix

···
+{ stdenv
+, makeWrapper
+, writeText
+, python3
+, fetchzip
+, inkscape
+, lib
+, udevGroup ? "k40"
+}:
+
+let
+  pythonEnv = python3.withPackages (ps: with ps; [
+    lxml
+    pyusb
+    pillow
+    pyclipper
+    tkinter
+  ]);
+
+  udevRule = writeText "k40-whisperer.rules" ''
+    SUBSYSTEM=="usb", ATTRS{idVendor}=="1a86", ATTRS{idProduct}=="5512", ENV{DEVTYPE}=="usb_device", MODE="0664", GROUP="${udevGroup}"
+  '';
+
+in stdenv.mkDerivation rec {
+  pname = "k40-whisperer";
+  version = "0.59";
+
+  src = fetchzip {
+    url = "https://www.scorchworks.com/K40whisperer/K40_Whisperer-${version}_src.zip";
+    stripRoot = true;
+    sha256 = "0r8rhaksk87l44pwwpvrfnck2lyic3lgcbh3pi7ib6mrwbsyhlni";
+  };
+
+  nativeBuildInputs = [ makeWrapper ];
+
+  patchPhase = ''
+    substituteInPlace svg_reader.py \
+      --replace '"/usr/bin/inkscape"' '"${inkscape}/bin/inkscape"'
+  '';
+
+  buildPhase = "";
+
+  installPhase = ''
+    mkdir -p $out
+    cp -p * $out
+
+    mkdir -p $out/bin
+    mkdir -p $out/lib/udev/rules.d
+
+    ln -s ${udevRule} $out/lib/udev/rules.d/97-k40-whisperer.rules
+
+    makeWrapper '${pythonEnv.interpreter}' $out/bin/k40-whisperer \
+      --add-flags $out/k40_whisperer.py \
+      --prefix PYTHONPATH : $out
+  '';
+
+  meta = with lib; {
+    description = ''
+      Control software for the stock K40 Laser controller
+    '';
+    mainProgram = "k40-whisperer";
+    longDescription = ''
+      K40 Whisperer is an alternative to the the Laser Draw (LaserDRW) program that comes with the cheap Chinese laser cutters available on E-Bay and Amazon.
+      K40 Whisperer reads SVG and DXF files, interprets the data and sends commands to the K40 controller to move the laser head and control the laser accordingly.
+      K40 Whisperer does not require a USB key (dongle) to function.
+    '';
+    homepage = "https://www.scorchworks.com/K40whisperer/k40whisperer.html";
+    downloadPage = "https://www.scorchworks.com/K40whisperer/k40whisperer.html#download";
+    license = licenses.gpl3;
+    maintainers = with maintainers; [ fooker ];
+    platforms = platforms.all;
+  };
+}
+

pkgs/top-level/all-packages.nix

···
 
   jstest-gtk = callPackage ../tools/misc/jstest-gtk { };
 
+  k40-whisperer = callPackage ../applications/misc/k40-whisperer { };
+
   keynav = callPackage ../tools/X11/keynav { };
 
   kgx = callPackage ../applications/terminal-emulators/kgx { };