diff --git a/cmake/akantu_environement.sh.in b/cmake/akantu_environement.sh.in
index 1a63c5f55..87b66a461 100644
--- a/cmake/akantu_environement.sh.in
+++ b/cmake/akantu_environement.sh.in
@@ -1,4 +1,6 @@
-PYTHONPATH=$PYTHONPATH:@PROJECT_BINARY_DIR@/python/:@PROJECT_SOURCE_DIR@/python/
+PYTHONPATH=$PYTHONPATH:@PROJECT_BINARY_DIR@/python/
+PYTHONPATH=$PYTHONPATH:@PROJECT_SOURCE_DIR@/test:@PROJECT_SOURCE_DIR@/test/test_fe_engine
+export PYTHONPATH
 
-export PYTHONPATH=$PYTHONPATH:@PROJECT_SOURCE_DIR@/test:@PROJECT_SOURCE_DIR@/test/test_fe_engine
-export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:@PROJECT_BINARY_DIR@/src
+LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:@PROJECT_BINARY_DIR@/src
+export LD_LIBRARY_PATH
diff --git a/python/CMakeLists.txt b/python/CMakeLists.txt
index bd8c575ba..f629f08f9 100644
--- a/python/CMakeLists.txt
+++ b/python/CMakeLists.txt
@@ -1,120 +1,124 @@
 
 #===============================================================================
 # @file   CMakeLists.txt
 #
 # @author Nicolas Richart <nicolas.richart@epfl.ch>
 #
 # @date creation: Fri Dec 12 2014
 # @date last modification: Mon Jan 18 2016
 #
 # @brief  CMake file for the python wrapping of akantu
 #
 # @section LICENSE
 #
 # Copyright (©) 2015 EPFL (Ecole Polytechnique Fédérale de Lausanne) Laboratory
 # (LSMS - Laboratoire de Simulation en Mécanique des Solides)
 #
 # Akantu is free  software: you can redistribute it and/or  modify it under the
 # terms  of the  GNU Lesser  General Public  License as  published by  the Free
 # Software Foundation, either version 3 of the License, or (at your option) any
 # later version.
 #
 # Akantu is  distributed in the  hope that it  will be useful, but  WITHOUT ANY
 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 # A  PARTICULAR PURPOSE. See  the GNU  Lesser General  Public License  for more
 # details.
 #
 # You should  have received  a copy  of the GNU  Lesser General  Public License
 # along with Akantu. If not, see <http://www.gnu.org/licenses/>.
 #
 #===============================================================================
 if(NOT SKBUILD)
   package_get_all_include_directories(
     AKANTU_LIBRARY_INCLUDE_DIRS
     )
 
   package_get_all_external_informations(
     PRIVATE_INCLUDE AKANTU_PRIVATE_EXTERNAL_INCLUDE_DIR
     INTERFACE_INCLUDE AKANTU_INTERFACE_EXTERNAL_INCLUDE_DIR
     LIBRARIES AKANTU_EXTERNAL_LIBRARIES
     )
 endif()
 
 set(PYAKANTU_SRCS
   py_aka_common.cc
   py_aka_error.cc
   py_akantu.cc
   py_boundary_conditions.cc
   py_fe_engine.cc
   py_group_manager.cc
   py_mesh.cc
   py_model.cc
   py_parser.cc
   py_solver.cc
   )
 
 package_is_activated(iohelper _is_activated)
 if (_is_activated)
   list(APPEND PYAKANTU_SRCS
     py_dumpable.cc
     )
 endif()
 
 
 package_is_activated(solid_mechanics _is_activated)
 if (_is_activated)
   list(APPEND PYAKANTU_SRCS
     py_solid_mechanics_model.cc
     py_material.cc
     )
 endif()
 
 package_is_activated(cohesive_element _is_activated)
 if (_is_activated)
   list(APPEND PYAKANTU_SRCS
     py_solid_mechanics_model_cohesive.cc
     py_fragment_manager.cc
     )
 endif()
 
 package_is_activated(heat_transfer _is_activated)
 if (_is_activated)
   list(APPEND PYAKANTU_SRCS
     py_heat_transfer_model.cc
     )
 endif()
 
 package_is_activated(structural_mechanics _is_activated)
 if (_is_activated)
   list(APPEND PYAKANTU_SRCS
     py_structural_mechanics_model.cc
     )
 endif()
 
 pybind11_add_module(py11_akantu ${PYAKANTU_SRCS})
 
 # to avoid compilation warnings from pybind11
 target_include_directories(py11_akantu
   SYSTEM BEFORE
   PRIVATE ${PYBIND11_INCLUDE_DIR}
   PRIVATE ${pybind11_INCLUDE_DIR}
   PRIVATE ${PYTHON_INCLUDE_DIRS})
 
 target_link_libraries(py11_akantu PUBLIC akantu)
-set_target_properties(py11_akantu PROPERTIES DEBUG_POSTFIX "")
+set_target_properties(py11_akantu PROPERTIES
+  DEBUG_POSTFIX ""
+  LIBRARY_OUTPUT_DIRECTORY akantu)
+
+file(COPY akantu DESTINATION ${CMAKE_CURRENT_BINARY_DIR})
 
 if(NOT SKBUILD)
   set(_python_install_dir
     ${CMAKE_INSTALL_LIBDIR}/python${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR}/site-packages)
 else()
   set(_python_install_dir .)
 endif()
 
 install(TARGETS py11_akantu
   LIBRARY DESTINATION ${_python_install_dir})
 
 if(NOT SKBUILD)
   install(DIRECTORY akantu
     DESTINATION ${_python_install_dir}
     FILES_MATCHING PATTERN "*.py")
 endif()