diff --git a/ci.nix b/ci.nix
index 027336ed..be5bc4f1 100644
--- a/ci.nix
+++ b/ci.nix
@@ -59,6 +59,8 @@ in
       xo-pyreactor
       xo-websock
       xo-pywebsock
+      xo-process
+      xo-pyprocess
       xo-userenv
       ;
   }
diff --git a/shells.nix b/shells.nix
index 361be73b..d13a5289 100644
--- a/shells.nix
+++ b/shells.nix
@@ -367,13 +367,13 @@ in
     pyreactor      = pkgs.xo-pyreactor;
     websock        = pkgs.xo-websock;
     pywebsock      = pkgs.xo-pywebsock;
+    process        = pkgs.xo-process;
+    pyprocess      = pkgs.xo-pyprocess;
     statistics     = pkgs.xo-statistics;
     distribution   = pkgs.xo-distribution;
     pydistribution = pkgs.xo-pydistribution;
     simulator      = pkgs.xo-simulator;
     pysimulator    = pkgs.xo-pysimulator;
-    process        = pkgs.xo-process;
-    pyprocess      = pkgs.xo-pyprocess;
     kalmanfilter   = pkgs.xo-kalmanfilter;
     pykalmanfilter = pkgs.xo-pykalmanfilter;
   };
diff --git a/xo-process/cmake/xo-bootstrap-macros.cmake b/xo-process/cmake/xo-bootstrap-macros.cmake
index aba31169..592272c0 100644
--- a/xo-process/cmake/xo-bootstrap-macros.cmake
+++ b/xo-process/cmake/xo-bootstrap-macros.cmake
@@ -19,7 +19,13 @@ endif()
 
 message(STATUS "XO_CMAKE_CONFIG_EXECUTABLE=${XO_CMAKE_CONFIG_EXECUTABLE}")
 
-if (NOT XO_SUBMODULE_BUILD)
+if (XO_SUBMODULE_BUILD)
+    if (("${CMAKE_MODULE_PATH}" STREQUAL "") OR ("${CMAKE_MODULE_PATH}" STREQUAL prefix))
+        # local version of xo-cmake macros
+        set(CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/xo-cmake/cmake")
+        message(STATUS "CMAKE_MODULE_PATH=${CMAKE_MODULE_PATH}")
+    endif()
+else()
     if (("${CMAKE_MODULE_PATH}" STREQUAL "") OR ("${CMAKE_MODULE_PATH}" STREQUAL prefix))
         # default to typical install location for xo-project-macros
         execute_process(COMMAND ${XO_CMAKE_CONFIG_EXECUTABLE} --cmake-module-path OUTPUT_VARIABLE CMAKE_MODULE_PATH)
diff --git a/xo-pyprocess/cmake/xo-bootstrap-macros.cmake b/xo-pyprocess/cmake/xo-bootstrap-macros.cmake
index aba31169..592272c0 100644
--- a/xo-pyprocess/cmake/xo-bootstrap-macros.cmake
+++ b/xo-pyprocess/cmake/xo-bootstrap-macros.cmake
@@ -19,7 +19,13 @@ endif()
 
 message(STATUS "XO_CMAKE_CONFIG_EXECUTABLE=${XO_CMAKE_CONFIG_EXECUTABLE}")
 
-if (NOT XO_SUBMODULE_BUILD)
+if (XO_SUBMODULE_BUILD)
+    if (("${CMAKE_MODULE_PATH}" STREQUAL "") OR ("${CMAKE_MODULE_PATH}" STREQUAL prefix))
+        # local version of xo-cmake macros
+        set(CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/xo-cmake/cmake")
+        message(STATUS "CMAKE_MODULE_PATH=${CMAKE_MODULE_PATH}")
+    endif()
+else()
     if (("${CMAKE_MODULE_PATH}" STREQUAL "") OR ("${CMAKE_MODULE_PATH}" STREQUAL prefix))
         # default to typical install location for xo-project-macros
         execute_process(COMMAND ${XO_CMAKE_CONFIG_EXECUTABLE} --cmake-module-path OUTPUT_VARIABLE CMAKE_MODULE_PATH)
diff --git a/xo.nix b/xo.nix
index bbd1a271..08f18841 100644
--- a/xo.nix
+++ b/xo.nix
@@ -72,13 +72,13 @@ let
     xo-pyreactor      = callPackage pkgs/xo-pyreactor.nix      { stdenv = jitStdenv; };
     xo-websock        = callPackage pkgs/xo-websock.nix        { stdenv = jitStdenv; };
     xo-pywebsock      = callPackage pkgs/xo-pywebsock.nix      { stdenv = jitStdenv; };
+    xo-process        = callPackage pkgs/xo-process.nix        { stdenv = jitStdenv; };
+    xo-pyprocess      = callPackage pkgs/xo-pyprocess.nix      { stdenv = jitStdenv; };
     xo-statistics     = callPackage pkgs/xo-statistics.nix     {};
     xo-distribution   = callPackage pkgs/xo-distribution.nix   {};
     xo-pydistribution = callPackage pkgs/xo-pydistribution.nix {};
     xo-simulator      = callPackage pkgs/xo-simulator.nix      {};
     xo-pysimulator    = callPackage pkgs/xo-pysimulator.nix    {};
-    xo-process        = callPackage pkgs/xo-process.nix        {};
-    xo-pyprocess      = callPackage pkgs/xo-pyprocess.nix      {};
     xo-kalmanfilter   = callPackage pkgs/xo-kalmanfilter.nix   {};
     xo-pykalmanfilter = callPackage pkgs/xo-pykalmanfilter.nix {};
     xo-userenv        = callPackage pkgs/xo-userenv.nix        {};