diff --git a/CMakeLists.txt b/CMakeLists.txt
index 15347ab4..63947175 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -91,6 +91,7 @@ add_subdirectory(xo-pywebsock)
 #
 add_subdirectory(xo-statistics)
 add_subdirectory(xo-distribution)
+add_subdirectory(xo-pydistribution)
 #
 add_subdirectory(xo-expression)
 add_subdirectory(xo-pyexpression)
@@ -99,7 +100,6 @@ add_subdirectory(xo-reader)
 add_subdirectory(xo-jit)
 add_subdirectory(xo-pyjit)
 #
-#add_subdirectory(xo-pydistribution)
 #add_subdirectory(xo-simulator)
 #add_subdirectory(xo-pysimulator)
 #add_subdirectory(xo-process)
diff --git a/default.nix b/default.nix
index c446a56b..d25b6e70 100644
--- a/default.nix
+++ b/default.nix
@@ -64,6 +64,7 @@ let
 #
           xo-statistics     = self.callPackage pkgs/xo-statistics.nix     {};
           xo-distribution   = self.callPackage pkgs/xo-distribution.nix   {};
+          xo-pydistribution = self.callPackage pkgs/xo-pydistribution.nix {};
 #
           xo-expression     = self.callPackage pkgs/xo-expression.nix     {};
           xo-pyexpression   = self.callPackage pkgs/xo-pyexpression.nix   {};
@@ -74,7 +75,7 @@ let
                                                                             clang = llvmPackages.clang;
                                                                             llvm = llvmPackages.llvm; };
           xo-pyjit          = self.callPackage pkgs/xo-pyjit.nix          {};
-#          xo-pydistribution = self.callPackage pkgs/xo-pydistribution.nix {};
+
 #          xo-simulator      = self.callPackage pkgs/xo-simulator.nix      {};
 #          xo-pysimulator    = self.callPackage pkgs/xo-pysimulator.nix    {};
 #          xo-process        = self.callPackage pkgs/xo-process.nix        {};
diff --git a/pkgs/xo-pydistribution.nix b/pkgs/xo-pydistribution.nix
new file mode 100644
index 00000000..1f00d7a7
--- /dev/null
+++ b/pkgs/xo-pydistribution.nix
@@ -0,0 +1,33 @@
+{
+  # nixpkgs dependencies
+  stdenv, cmake, catch2,
+
+  #python3Packages,
+
+  # xo dependencies
+  xo-cmake,
+  #xo-refcnt,
+  xo-distribution,
+
+  xo-pyutil,
+  #xo-pyreflect,
+} :
+
+stdenv.mkDerivation (finalattrs:
+  {
+    name = "xo-pydistribution";
+
+    src = ../xo-pydistribution;
+
+    cmakeFlags = ["-DCMAKE_MODULE_PATH=${xo-cmake}/share/cmake"];
+    #doCheck = true;
+    nativeBuildInputs = [ cmake catch2 xo-cmake ];
+    propagatedBuildInputs = [
+      xo-distribution
+      xo-pyutil
+#      xo-pyreflect
+#      xo-refcnt
+#      python3Packages.python
+#      python3Packages.pybind11
+    ];
+  })
diff --git a/pkgs/xo-userenv.nix b/pkgs/xo-userenv.nix
index 85376f0c..c1d1c02c 100644
--- a/pkgs/xo-userenv.nix
+++ b/pkgs/xo-userenv.nix
@@ -49,9 +49,10 @@
 #
   xo-statistics,
   xo-distribution,
+  xo-pydistribution,
 #  xo-simulator,
   #  xo-pysimulator,
-#  xo-pydistribution, xo-process, xo-pyprocess,
+  #xo-process, xo-pyprocess,
   #xo-kalmanfilter,
   #  xo-pykalmanfilter,
 #
@@ -95,6 +96,7 @@ buildEnv {
             xo-pywebsock
             xo-statistics
             xo-distribution
+            xo-pydistribution
 #
             xo-expression
             xo-pyexpression
@@ -102,7 +104,6 @@ buildEnv {
             xo-reader
             xo-jit
             xo-pyjit
-#            xo-pydistribution
 #            xo-simulator
 #            xo-pysimulator
 #            xo-process