Added brother-ql

brother-ql.nix

@@ -0,0 +1,48 @@
+{ stdenv
+, fetchPypi
+, fetchpatch
+, buildPythonPackage
+, future
+, packbits
+, pillow
+, pyusb
+, pytest
+, mock
+, click
+, attrs
+, lib
+}:
+
+buildPythonPackage rec {
+  pname = "brother-ql";
+  version = "0.9.4";
+  format = "setuptools";
+
+  src = fetchPypi {
+    pname = "brother_ql";
+    inherit version;
+    hash = "sha256-H1xXoDnwEsnCBDl/RwAB9267dINCHr3phdDLPGFOhmA=";
+  };
+
+  propagatedBuildInputs = [ future packbits pillow pyusb click attrs ];
+
+  patches = [
+    # Make compatible with recent PIL library
+    (fetchpatch {
+      url = "https://patch-diff.githubusercontent.com/raw/pklaus/brother_ql/pull/143.patch";
+      hash = "sha256-w4p64dHn08tqT6/gDPpupIf08yQe8oOm9ItCMaPe2cc=";
+    })
+  ];
+
+  meta = with lib; {
+    description = "Python package for the raster language protocol of the Brother QL series label printers";
+    longDescription = ''
+      Python package for the raster language protocol of the Brother QL series label printers
+      (QL-500, QL-550, QL-570, QL-700, QL-710W, QL-720NW, QL-800, QL-820NWB, QL-1050 and more)
+    '';
+    homepage = "https://github.com/pklaus/brother_ql";
+    license = licenses.gpl3;
+    maintainers = with maintainers; [ grahamc ];
+    mainProgram = "brother_ql";
+  };
+}

default.nix

@@ -4,7 +4,8 @@ self: super: {
 
   python3 = super.python3.override {
     packageOverrides = python-self: python-super: {
-        pytapo = python-super.callPackage ./pytapo { };
+        pytapo = python-self.callPackage ./pytapo { };
+        brother-ql = python-self.callPackage ./brother-ql.nix { };
     };
   };