diff --git a/pkgs/by-name/co/cobang/package.nix b/pkgs/by-name/co/cobang/package.nix
index 16c06bfbf31c..1909421547ef 100644
--- a/pkgs/by-name/co/cobang/package.nix
+++ b/pkgs/by-name/co/cobang/package.nix
@@ -1,28 +1,17 @@
 {
   lib,
-  buildPythonApplication,
+  python3Packages,
   fetchFromGitHub,
-  brotlicffi,
-  gst-python,
-  kiss-headers,
-  logbook,
-  pillow,
-  pygobject3,
-  python-zbar,
-  requests,
-  single-version,
+  gst_all_1,
   gobject-introspection,
   gtk3,
   libhandy,
   librsvg,
   networkmanager,
-  setuptools,
-  python,
-  pytestCheckHook,
   wrapGAppsHook3,
 }:
 
-buildPythonApplication rec {
+python3Packages.buildPythonApplication rec {
   pname = "cobang";
   version = "0.14.1";
   pyproject = true;
@@ -40,14 +29,14 @@ buildPythonApplication rec {
     sed -i '$ a\packages = ["cobang"]' pyproject.toml
   '';
 
-  nativeBuildInputs = [
+  nativeBuildInputs = with python3Packages; [
     # Needed to recognize gobject namespaces
     gobject-introspection
     wrapGAppsHook3
     setuptools
   ];
 
-  buildInputs = [
+  buildInputs = with python3Packages; [
     # Requires v4l2src
     (gst_all_1.gst-plugins-good.override { gtkSupport = true; })
     # For gobject namespaces
@@ -55,7 +44,7 @@ buildPythonApplication rec {
     networkmanager
   ];
 
-  propagatedBuildInputs = [
+  dependencies = with python3Packages; [
     brotlicffi
     kiss-headers
     logbook
@@ -69,21 +58,25 @@ buildPythonApplication rec {
     gst-python
   ];
 
-  nativeCheckInputs = [
+  nativeCheckInputs = with python3Packages; [
     pytestCheckHook
   ];
 
+  pythonRelaxDeps = [
+    "Pillow"
+  ];
+
   # Wrapping this manually for SVG recognition
   dontWrapGApps = true;
 
   postInstall = ''
     # Needed by the application
-    cp -R data $out/${python.sitePackages}/
+    cp -R data $out/${python3Packages.python.sitePackages}/
 
     # Icons and applications
-    install -Dm 644 $out/${python.sitePackages}/data/vn.hoabinh.quan.CoBang.svg -t $out/share/pixmaps/
-    install -Dm 644 $out/${python.sitePackages}/data/vn.hoabinh.quan.CoBang.desktop.in -t $out/share/applications/
-    mv $out/${python.sitePackages}/data/vn.hoabinh.quan.CoBang.desktop{.in,}
+    install -Dm 644 $out/${python3Packages.python.sitePackages}/data/vn.hoabinh.quan.CoBang.svg -t $out/share/pixmaps/
+    install -Dm 644 $out/${python3Packages.python.sitePackages}/data/vn.hoabinh.quan.CoBang.desktop.in -t $out/share/applications/
+    mv $out/${python3Packages.python.sitePackages}/data/vn.hoabinh.quan.CoBang.desktop{.in,}
   '';
 
   preFixup = ''
@@ -93,11 +86,11 @@ buildPythonApplication rec {
       --set GDK_PIXBUF_MODULE_FILE "${librsvg.out}/lib/gdk-pixbuf-2.0/2.10.0/loaders.cache"
   '';
 
-  meta = with lib; {
+  meta = {
     description = "QR code scanner desktop app for Linux";
     homepage = "https://github.com/hongquan/CoBang";
-    license = licenses.gpl3Only;
-    maintainers = with maintainers; [
+    license = lib.licenses.gpl3Only;
+    maintainers = with lib.maintainers; [
       aleksana
       dvaerum
     ];