diff --git a/pkgs/development/python-modules/cozy/default.nix b/pkgs/development/python-modules/cozy/default.nix
new file mode 100644
index 000000000000..0feca2773b37
--- /dev/null
+++ b/pkgs/development/python-modules/cozy/default.nix
@@ -0,0 +1,38 @@
+{ buildPythonPackage, fetchFromGitHub, lib,
+  z3, ply, python-igraph, oset, ordered-set, dictionaries }:
+
+buildPythonPackage {
+  pname = "cozy";
+  version = "2.0a1";
+
+  propagatedBuildInputs = [
+    z3 ply python-igraph oset ordered-set dictionaries
+  ];
+
+  src = fetchFromGitHub {
+    owner = "CozySynthesizer";
+    repo = "cozy";
+    rev = "f553e9b";
+    sha256 = "1jhr5gzihj8dkg0yc5dmi081v2isxharl0ph7v2grqj0bwqzl40j";
+  };
+
+  # Yoink the Z3 dependency name, because our Z3 package doesn't provide it.
+  postPatch = ''
+    sed -i -e '/z3-solver/d' requirements.txt
+  '';
+
+  # Tests are not correctly set up in the source tree.
+  doCheck = false;
+
+  # There is some first-time-run codegen that we will force to happen.
+  postInstall = ''
+    $out/bin/cozy --help
+  '';
+
+  meta = {
+    description = "The collection synthesizer";
+    homepage = https://cozy.uwplse.org/;
+    license = lib.licenses.asl20;
+    maintainers = [ lib.maintainers.MostAwesomeDude ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 7e9eb275833d..b21767bd8678 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -238,6 +238,8 @@ in {
 
   clustershell = callPackage ../development/python-modules/clustershell { };
 
+  cozy = callPackage ../development/python-modules/cozy { };
+
   dendropy = callPackage ../development/python-modules/dendropy { };
 
   dbf = callPackage ../development/python-modules/dbf { };