Tests: fix pybind11

Author: nim65s

flake.nix

@@ -32,6 +32,7 @@
             default = self'.packages.pinocchio;
             pinocchio = pkgs.python3Packages.pinocchio.overrideAttrs (super: {
               propagatedBuildInputs = super.propagatedBuildInputs ++ [ pkgs.example-robot-data ];
+              nativeCheckInputs = [ pkgs.python3Packages.pybind11 ];
               src = pkgs.lib.fileset.toSource {
                 root = ./.;
                 fileset = pkgs.lib.fileset.unions [
@@ -78,6 +79,7 @@
                 pkgs.example-robot-data
                 self'.packages.libpinocchio
               ];
+              nativeCheckInputs = [ pkgs.python3Packages.pybind11 ];
               src = pkgs.lib.fileset.toSource {
                 root = ./.;
                 fileset = pkgs.lib.fileset.unions [

unittest/python/pybind11/CMakeLists.txt

@@ -1,36 +1,38 @@
-include(FetchContent)
-FetchContent_Declare(
-  pybind11
-  GIT_REPOSITORY https://github.com/pybind/pybind11
-  GIT_TAG v3.0.1)
-FetchContent_GetProperties(pybind11)
-if(NOT pybind11_POPULATED)
-  FetchContent_Populate(pybind11)
-  add_subdirectory(${pybind11_SOURCE_DIR} ${pybind11_BINARY_DIR})
-
-  # pybind11_add_module(cpp2pybind11 cpp2pybind11.cpp)
-  #
-  # BUG: might not work out of the box on OSX with conda:
-  # https://github.com/pybind/pybind11/issues/3081
-  if(NOT BUILD_TESTING)
-    add_library(cpp2pybind11 MODULE EXCLUDE_FROM_ALL cpp2pybind11.cpp)
-  else()
-    add_library(cpp2pybind11 MODULE cpp2pybind11.cpp)
-  endif()
-  add_dependencies(build_tests cpp2pybind11)
-  target_link_libraries(cpp2pybind11 PRIVATE pinocchio_pywrap_default pybind11::module
-                                             Eigen3::Eigen)
-  set_target_properties(cpp2pybind11 PROPERTIES PREFIX "" SUFFIX ${PYTHON_EXT_SUFFIX})
-
-  if(CMAKE_CXX_STANDARD LESS 14)
-    message(STATUS "CXX_STANDARD for cpp2pybind11 changed from ${CMAKE_CXX_STANDARD} to 14")
-    set_target_properties(cpp2pybind11 PROPERTIES CXX_STANDARD 14)
+find_package(pybind11 CONFIG QUIET)
+if(NOT TARGET pybind11::module)
+  include(FetchContent)
+  FetchContent_Declare(
+    pybind11
+    GIT_REPOSITORY https://github.com/pybind/pybind11
+    GIT_TAG v3.0.1)
+  FetchContent_GetProperties(pybind11)
+  if(NOT pybind11_POPULATED)
+    FetchContent_Populate(pybind11)
+    add_subdirectory(${pybind11_SOURCE_DIR} ${pybind11_BINARY_DIR})
   endif()
+endif()
 
-  if(WIN32)
-    target_compile_definitions(cpp2pybind11 PRIVATE -DNOMINMAX)
-  endif(WIN32)
+# pybind11_add_module(cpp2pybind11 cpp2pybind11.cpp)
+#
+# BUG: might not work out of the box on OSX with conda:
+# https://github.com/pybind/pybind11/issues/3081
+if(NOT BUILD_TESTING)
+  add_library(cpp2pybind11 MODULE EXCLUDE_FROM_ALL cpp2pybind11.cpp)
+else()
+  add_library(cpp2pybind11 MODULE cpp2pybind11.cpp)
+endif()
+add_dependencies(build_tests cpp2pybind11)
+target_link_libraries(cpp2pybind11 PRIVATE pinocchio_pywrap_default pybind11::module Eigen3::Eigen)
+set_target_properties(cpp2pybind11 PROPERTIES PREFIX "" SUFFIX ${PYTHON_EXT_SUFFIX})
 
-  add_python_unit_test("test-py-cpp2pybind11" "unittest/python/pybind11/test-cpp2pybind11.py"
-                       "bindings/python" "unittest/python/pybind11")
+if(CMAKE_CXX_STANDARD LESS 14)
+  message(STATUS "CXX_STANDARD for cpp2pybind11 changed from ${CMAKE_CXX_STANDARD} to 14")
+  set_target_properties(cpp2pybind11 PROPERTIES CXX_STANDARD 14)
 endif()
+
+if(WIN32)
+  target_compile_definitions(cpp2pybind11 PRIVATE -DNOMINMAX)
+endif(WIN32)
+
+add_python_unit_test("test-py-cpp2pybind11" "unittest/python/pybind11/test-cpp2pybind11.py"
+                     "bindings/python" "unittest/python/pybind11")