diff --git a/pkgs/development/python-modules/diagrams/build_poetry.patch b/pkgs/development/python-modules/diagrams/build_poetry.patch
new file mode 100644
index 000000000000..b2e3d39dae11
--- /dev/null
+++ b/pkgs/development/python-modules/diagrams/build_poetry.patch
@@ -0,0 +1,12 @@
+diff --git a/pyproject.toml b/pyproject.toml
+index 2c93a39..6c800e2 100644
+--- a/pyproject.toml
++++ b/pyproject.toml
+@@ -24,3 +24,7 @@ isort = "^4.3"
+ 
+ [tool.black]
+ line-length = 120
++
++[build-system]
++requires = ["poetry_core>=1.0.0"]
++build-backend = "poetry.core.masonry.api"
diff --git a/pkgs/development/python-modules/diagrams/default.nix b/pkgs/development/python-modules/diagrams/default.nix
new file mode 100644
index 000000000000..37e23d730e6b
--- /dev/null
+++ b/pkgs/development/python-modules/diagrams/default.nix
@@ -0,0 +1,49 @@
+{ lib
+, buildPythonPackage
+, pythonOlder
+, fetchFromGitHub
+, black
+, jinja2
+, poetry-core
+, round
+, graphviz
+, inkscape
+, imagemagick
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "diagrams";
+  version = "0.19.1";
+  format = "pyproject";
+  disabled = pythonOlder "3.6";
+
+  src = fetchFromGitHub {
+    owner = "mingrammer";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "0qvk0cp3026n5jmwp9z7m70b6pws0h6a7slxr23glg18baxr44d4";
+  };
+
+  preConfigure = ''
+    patchShebangs autogen.sh
+    ./autogen.sh
+  '';
+
+  patches = [ ./build_poetry.patch ];
+
+  checkInputs = [ pytestCheckHook ];
+
+  # Despite living in 'tool.poetry.dependencies',
+  # these are only used at build time to process the image resource files
+  nativeBuildInputs = [ black inkscape imagemagick jinja2 poetry-core round ];
+
+  propagatedBuildInputs = [ graphviz ];
+
+  meta = with lib; {
+    description = "Diagram as Code";
+    homepage    = "https://diagrams.mingrammer.com/";
+    license     = licenses.mit;
+    maintainers =  with maintainers; [ addict3d ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 72b60ba902c3..1177fa1e6134 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -1553,6 +1553,8 @@ in {
 
   dftfit = callPackage ../development/python-modules/dftfit { };
 
+  diagrams = callPackage ../development/python-modules/diagrams { };
+
   diceware = callPackage ../development/python-modules/diceware { };
 
   dicom2nifti = callPackage ../development/python-modules/dicom2nifti { };