diff --git a/pkgs/applications/misc/cobang/0001-Poetry-core-and-pillow-9.patch b/pkgs/applications/misc/cobang/0001-Poetry-core-and-pillow-9.patch
new file mode 100644
index 000000000000..d3c32cf96407
--- /dev/null
+++ b/pkgs/applications/misc/cobang/0001-Poetry-core-and-pillow-9.patch
@@ -0,0 +1,31 @@
+From 324a267b0e5505c9124874581bc48fb174fb2542 Mon Sep 17 00:00:00 2001
+From: "P. R. d. O" <d.ol.rod@tutanota.com>
+Date: Fri, 4 Mar 2022 07:03:17 -0600
+Subject: [PATCH] Pillow update
+
+---
+ pyproject.toml | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/pyproject.toml b/pyproject.toml
+index 5dc25e0..b3ba397 100644
+--- a/pyproject.toml
++++ b/pyproject.toml
+@@ -11,7 +11,7 @@ readme = "README.rst"
+ [tool.poetry.dependencies]
+ python = "^3.7"
+ logbook = "^1.5.3"
+-Pillow = "^8.2.0"
++Pillow = "^9.0.0"
+ requests = "^2.24.0"
+ kiss-headers = "^2.2.3"
+ single-version = "^1.5.1"
+@@ -33,4 +33,4 @@ skip-string-normalization = true
+ 
+ [build-system]
+ requires = ["poetry>=0.12"]
+-build-backend = "poetry.masonry.api"
++build-backend = "poetry.core.masonry.api"
+-- 
+2.35.1
+
diff --git a/pkgs/applications/misc/cobang/default.nix b/pkgs/applications/misc/cobang/default.nix
new file mode 100644
index 000000000000..1401a7a8df28
--- /dev/null
+++ b/pkgs/applications/misc/cobang/default.nix
@@ -0,0 +1,102 @@
+{ lib
+, buildPythonApplication
+, fetchFromGitHub
+, wrapGAppsHook
+, atk
+, gdk-pixbuf
+, gobject-introspection
+, gtk3
+, gst-plugins-good
+, libhandy
+, librsvg
+, networkmanager
+, pango
+, gst-python
+, kiss-headers
+, Logbook
+, pillow
+, poetry-core
+, pygobject3
+, python
+, python-zbar
+, requests
+, single-version
+, pytestCheckHook }:
+
+buildPythonApplication rec {
+  pname = "cobang";
+  version = "0.9.6";
+  format = "pyproject";
+
+  src = fetchFromGitHub {
+    owner = "hongquan";
+    repo = "CoBang";
+    rev = "v${version}";
+    sha256 = "sha256-YcXQ2wAgFSsJEqcaDQotpX1put4pQaF511kwq/c2yHw=";
+  };
+
+  patches = [
+    ./0001-Poetry-core-and-pillow-9.patch
+  ];
+
+  nativeBuildInputs = [
+    gobject-introspection
+    wrapGAppsHook
+  ];
+
+  propagatedBuildInputs = [
+    gst-python
+    kiss-headers
+    Logbook
+    pillow
+    poetry-core
+    pygobject3
+    python-zbar
+    requests
+    single-version
+  ];
+
+  buildInputs = [
+    atk
+    gdk-pixbuf
+    # Needed to detect namespaces
+    gobject-introspection
+    gst-plugins-good
+    libhandy
+    networkmanager
+    pango
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+  ];
+
+  # Wrapping this manually for SVG recognition
+  dontWrapGApps = true;
+
+  postInstall = ''
+    # Needed by the application
+    cp -R data $out/${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 -t $out/share/applications/
+    substituteInPlace $out/share/applications/vn.hoabinh.quan.CoBang.desktop \
+      --replace "Exec=" "Exec=$out/bin/"
+  '';
+
+  preFixup = ''
+    wrapProgram $out/bin/cobang \
+      ''${gappsWrapperArgs[@]} \
+      --prefix XDG_DATA_DIRS : "${gtk3}/share/gsettings-schemas/${gtk3.name}/" \
+      --set GDK_PIXBUF_MODULE_FILE "${librsvg.out}/lib/gdk-pixbuf-2.0/2.10.0/loaders.cache"
+  '';
+
+  meta = with lib; {
+    description = "A QR code scanner desktop app for Linux";
+    homepage = "https://github.com/hongquan/CoBang";
+    license = licenses.gpl3Only;
+    maintainers = with maintainers; [ wolfangaukang ];
+    platforms = [ "x86_64-linux" ];
+  };
+}
diff --git a/pkgs/development/python-modules/kiss-headers/default.nix b/pkgs/development/python-modules/kiss-headers/default.nix
new file mode 100644
index 000000000000..0ceced85cacf
--- /dev/null
+++ b/pkgs/development/python-modules/kiss-headers/default.nix
@@ -0,0 +1,39 @@
+{ lib, buildPythonPackage, fetchFromGitHub, requests, pytestCheckHook }:
+
+buildPythonPackage rec {
+  pname = "kiss-headers";
+  version = "2.3.0";
+  format = "setuptools";
+
+  src = fetchFromGitHub {
+    owner = "Ousret";
+    repo = pname;
+    rev = version;
+    sha256 = "sha256-/eTRyxFyAKQMzE/JjdoEN3w0lRiaIJcsJHTWV8M0CYQ=";
+  };
+
+  propagatedBuildInputs = [ requests ];
+
+  checkInputs = [ pytestCheckHook ];
+
+  postPatch = ''
+    substituteInPlace setup.cfg \
+      --replace "--cov=kiss_headers --doctest-modules --cov-report=term-missing -rxXs" "--doctest-modules -rxXs"
+  '';
+
+  disabledTestPaths = [
+    # Tests require internet access
+    "kiss_headers/__init__.py"
+    "tests/test_serializer.py"
+    "tests/test_with_http_request.py"
+  ];
+
+  pythonImportsCheck = [ "kiss_headers" ];
+
+  meta = with lib; {
+    description = "Python package for HTTP/1.1 style headers";
+    homepage = "https://github.com/Ousret/kiss-headers";
+    license = licenses.mit;
+    maintainers = with maintainers; [ wolfangaukang ];
+  };
+}
diff --git a/pkgs/development/python-modules/python-zbar/default.nix b/pkgs/development/python-modules/python-zbar/default.nix
new file mode 100644
index 000000000000..04e89b664c49
--- /dev/null
+++ b/pkgs/development/python-modules/python-zbar/default.nix
@@ -0,0 +1,42 @@
+{ lib , buildPythonPackage , fetchFromGitHub , pillow , zbar , pytestCheckHook }:
+
+buildPythonPackage rec {
+  pname = "python-zbar";
+  version = "0.23.90";
+  format = "setuptools";
+
+  src = fetchFromGitHub {
+    owner = "mchehab";
+    repo = "zbar";
+    rev = version;
+    sha256 = "sha256-FvV7TMc4JbOiRjWLka0IhtpGGqGm5fis7h870OmJw2U=";
+  };
+
+  propagatedBuildInputs = [ pillow ];
+
+  buildInputs = [ zbar ];
+
+  checkInputs = [ pytestCheckHook ];
+
+  preBuild = ''
+    cd python
+  '';
+
+  disabledTests = [
+    #AssertionError: b'Y800' != 'Y800'
+    "test_format"
+    "test_new"
+    #Requires loading a recording device
+    #zbar.SystemError: <zbar.Processor object at 0x7ffff615a680>
+    "test_processing"
+  ];
+
+  pythonImportsCheck = [ "zbar" ];
+
+  meta = with lib; {
+    description = "Python bindings for zbar";
+    homepage = "https://github.com/mchehab/zbar";
+    license = licenses.lgpl21Only;
+    maintainers = with maintainers; [ wolfangaukang ];
+  };
+}
diff --git a/pkgs/development/python-modules/single-version/0001-set-poetry-core.patch b/pkgs/development/python-modules/single-version/0001-set-poetry-core.patch
new file mode 100644
index 000000000000..4c6f869c0c27
--- /dev/null
+++ b/pkgs/development/python-modules/single-version/0001-set-poetry-core.patch
@@ -0,0 +1,21 @@
+From d949b37151cd538d4c6a15e1ba6c1343f8bff76d Mon Sep 17 00:00:00 2001
+From: "P. R. d. O" <d.ol.rod@protonmail.com>
+Date: Mon, 6 Dec 2021 15:26:19 -0600
+Subject: [PATCH] set poetry-core
+
+---
+ pyproject.toml | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/pyproject.toml b/pyproject.toml
+index d3fdc52..bd7ddc2 100644
+--- a/pyproject.toml
++++ b/pyproject.toml
+@@ -27,4 +27,4 @@ black = "^19.10b0"
+
+ [build-system]
+ requires = ["poetry>=0.12"]
+-build-backend = "poetry.masonry.api"
++build-backend = "poetry.core.masonry.api"
+--
+2.33.1
diff --git a/pkgs/development/python-modules/single-version/default.nix b/pkgs/development/python-modules/single-version/default.nix
new file mode 100644
index 000000000000..39cd92f5f67e
--- /dev/null
+++ b/pkgs/development/python-modules/single-version/default.nix
@@ -0,0 +1,31 @@
+{ lib, buildPythonPackage, fetchFromGitHub, poetry-core, pytestCheckHook }:
+
+buildPythonPackage rec {
+  pname = "single-version";
+  version = "1.5.1";
+  format = "pyproject";
+
+  src = fetchFromGitHub {
+    owner = "hongquan";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-I8ATQzPRH9FVjqPoqrNjYMBU5azpmkLjRmHcz943C10=";
+  };
+
+  patches = [
+    ./0001-set-poetry-core.patch
+  ];
+
+  nativeBuildInputs = [ poetry-core ];
+
+  checkInputs = [ pytestCheckHook ];
+
+  pythonImportsCheck = [ "single_version" ];
+
+  meta = with lib; {
+    description = "Utility to let you have a single source of version in your code base";
+    homepage = "https://github.com/hongquan/single-version";
+    license = licenses.mit;
+    maintainers = with maintainers; [ wolfangaukang ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 24785322b0d3..f48203741d52 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -4484,6 +4484,10 @@ with pkgs;
     inherit (darwin.apple_sdk.frameworks) CoreServices;
   };
 
+  cobang = python3Packages.callPackage ../applications/misc/cobang {
+    gst-plugins-good = gst_all_1.gst-plugins-good.override { gtkSupport = true; };
+  };
+
   cocoapods = callPackage ../development/mobile/cocoapods { };
 
   cocoapods-beta = lowPrio (callPackage ../development/mobile/cocoapods { beta = true; });
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 20a757033a18..fbdd25360e61 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -4476,6 +4476,8 @@ in {
 
   kinparse = callPackage ../development/python-modules/kinparse { };
 
+  kiss-headers = callPackage ../development/python-modules/kiss-headers { };
+
   kitchen = callPackage ../development/python-modules/kitchen { };
 
   kivy = callPackage ../development/python-modules/kivy {
@@ -8275,6 +8277,8 @@ in {
 
   python-xmp-toolkit = callPackage ../development/python-modules/python-xmp-toolkit { };
 
+  python-zbar = callPackage ../development/python-modules/python-zbar { };
+
   pythran = callPackage ../development/python-modules/pythran {
     inherit (pkgs.llvmPackages) openmp;
   };
@@ -9194,6 +9198,8 @@ in {
 
   simpy = callPackage ../development/python-modules/simpy { };
 
+  single-version = callPackage ../development/python-modules/single-version { };
+
   signify = callPackage ../development/python-modules/signify { };
 
   siosocks = callPackage ../development/python-modules/siosocks { };