package grott, libscrc

pkgs/default.nix

@@ -35,5 +35,11 @@
   });
   wayland-push-to-talk-fix = self.callPackage ./wayland-push-to-talk-fix.nix {};
   y-deployer = self.callPackage ../deployer/package.nix {};
+  grott = self.callPackage ./grott.nix {};
+  python3 = super.python3.override {
+    packageOverrides = pyself: pysuper: {
+      libscrc = pyself.callPackage ./libscrc.nix {};
+    };
+  };
 
 })

pkgs/grott.nix

@@ -0,0 +1,26 @@
+{ stdenv, python3, fetchFromGitHub, makeWrapper }:
+let
+  python = python3.withPackages (p: [ p.paho-mqtt p.libscrc ]);
+in
+stdenv.mkDerivation (o: {
+  pname = "grott";
+  version = "2.7.8";
+  src = fetchFromGitHub {
+    owner = "johanmeijer";
+    repo = o.pname;
+    rev = "cb7e3db8a9ea2ab11fad062d68a3e98e6a87cedf";
+    sha256 = "rFxSQZypa+G45jj/ktJLlqfMIp1yHoEmfzB1BvHLeLo=";
+  };
+  nativeBuildInputs = [ makeWrapper ];
+  buildPhase = "true";
+  installPhase = ''
+    mkdir -p $out/share/grott
+    cp *.py examples/recwl.txt examples/Home\ Assistent/grott_ha.py $out/share/grott/
+    makeWrapper ${python}/bin/python3 $out/bin/grott \
+      --add-flags $out/share/grott/grott.py
+  '';
+  meta = with stdenv.lib; {
+    description = "Grott is a program to read data from a Growatt inverter and send it to a MQTT broker";
+    homepage = o.src.homePage;
+  };
+})

pkgs/libscrc.nix

@@ -0,0 +1,22 @@
+{ lib, buildPythonPackage, fetchPypi }:
+
+buildPythonPackage rec {
+  pname = "libscrc";
+  version = "1.8.1";
+
+  src = fetchPypi {
+    inherit pname version;
+    hash = "sha256-17pr8jz96ztynQrTeV9sb5fY6kFVJS48qfFHWHArp8g=";
+  };
+
+  propagatedBuildInputs = [];
+
+  pythonImportsCheck = [ "libscrc" ];
+
+  meta = with lib; {
+    description = "A library for calculating CRC, CRC-ITU, CRC-32, CRC-16, CRC-CCITT";
+    homepage = "https://github.com/hex-in/libscrc";
+    license = licenses.mit;
+    maintainers = with maintainers; [ yorickvp ];
+  };
+}