diff --git a/scripts/compilation/create_ninja_build.py b/scripts/compilation/create_ninja_build.py
index ce39a322..249c76ad 100755
--- a/scripts/compilation/create_ninja_build.py
+++ b/scripts/compilation/create_ninja_build.py
@@ -41,11 +41,25 @@ def ninja_makefile_depend_build(l_all_needed_molule, path_module):
 
     return l_string
 
-
+import glob
 #  _ __  _ ___  _         _
 # |_  / |_  |  / \    _ _|_ _
 # |_ /_ |  _|_ \_/ o (_  | (_|
 #                           _|
+
+
+def get_module_with_ezfio_cfg():
+    from os import listdir
+    from os.path import isfile, join
+    qp_src = qpackage_root_src
+
+    return [join(qp_src, m) for m in listdir(qp_src) if isfile(join(qp_src, m, "EZFIO.cfg")) ]
+
+
+def get_ezfio_config():
+    return glob.glob("{0}/*/*.ezfio_config".format(qpackage_root_src))
+
+
 def get_l_ezfio_irp(l_all_needed_molule, path_module):
 
     l_module_abs = [join(qpackage_root_src, m) for m in l_all_needed_molule]
@@ -66,24 +80,35 @@ def get_l_ezfio_irp(l_all_needed_molule, path_module):
 def ninja_ezfio_cfg_rule():
     # Rule
     l_string = ["rule build_ezfio_interface"]
-    l_string += [
-        "   command = cd $sub_module ; ei_handler.py ; cd -"]
+    l_string += ["   command = ei_handler.py --path_module $sub_module --irpf90"]
     l_string += [""]
 
     return l_string
 
 
-def ninja_ezfio_cfg_build():
+def ninja_ezfio_interface_config_rule():
+    # Rule
+    l_string = ["rule build_ezfio_interface_config"]
+    l_string += ["   command = ei_handler.py --path_module $sub_module --ezfio_config"]
+    l_string += [""]
+
+    return l_string
+
+
+def ninja_ezfio_config_rule():
+    # Rule
+    l_string = ["rule build_ezfio_config"]
+    l_string += ["   command = cp $in $out"]
+    l_string += [""]
+
+    return l_string
+
+
+def ninja_ezfio_cfg_build(l_module_with_ezfio_cfg):
     # Build
     l_string = []
 
-    from os import listdir
-    from os.path import isfile, join
-    qp_src = qpackage_root_src
-
-    l = [join(qp_src, m) for m in listdir(qp_src) if isfile(join(qp_src, m, "EZFIO.cfg")) ]
-
-    for m in l:
+    for m in l_module_with_ezfio_cfg:
         ez_interface = join(m, "ezfio_interface.irp.f")
         ez_cfg = join(m, "EZFIO.cfg")
 
@@ -95,6 +120,55 @@ def ninja_ezfio_cfg_build():
     return l_string
 
 
+def ninja_ezfio_config_build(l_module_with_ezfio_cfg,l_ezfio_config):
+    # Build
+    l_string = []
+    l_file_create = []
+
+    ezfio_folder = join(qpackage_root, "EZFIO/config")
+
+    for m in l_module_with_ezfio_cfg:
+        file_source = join(m, "EZFIO.cfg")
+        name = "{0}.ezfio_interface_config".format(os.path.split(m)[1].lower())
+        file_create = join(ezfio_folder, name)
+
+        l_file_create.append(file_create)
+        l_string += ["build {0}: build_ezfio_interface_config {1}".format(file_create, file_source)]
+        l_string +=  ["   sub_module = {0}".format(m)]
+        l_string += [""]
+
+    for m in l_ezfio_config:
+        file_source = m
+        name = os.path.split(m)[1].lower()
+        file_create = join(ezfio_folder, name)
+
+        l_file_create.append(file_create)
+        l_string += ["build {0}: build_ezfio_config {1}".format(file_create, file_source)]
+        l_string += [""]
+
+    return l_string, l_file_create
+
+
+def ninja_ezfio_rule():
+    # Rule
+    l_string = ["rule build_ezfio"]
+    ezfio_folder = join(qpackage_root, "EZFIO")
+    l_string += ["   command = cd {0}; make ; cd -".format(ezfio_folder)]
+
+    return l_string
+
+
+def ninja_ezfio_build(l_file_create):
+    # Rule
+    ezfio_lib = join(qpackage_root, "EZFIO", "lib", "libezfio.a")
+    str_ = " ".join(l_file_create)
+
+    l_string = ["build {0}: build_ezfio {1}".format(ezfio_lib, str_)]
+    l_string += [""]
+
+    return l_string
+
+
 #  __
 # (_     ._ _  | o ._  |
 # __) \/ | | | | | | | |<
@@ -137,7 +211,7 @@ def ninja_symlink_build(l_source, l_destination):
 #      |
 def ninja_irpf90_make_rule():
     # Rule
-    l_string  = ["pool irp_pool"]
+    l_string = ["pool irp_pool"]
     l_string += ["   depth = 1"]
     l_string += [""]
 
@@ -187,8 +261,9 @@ def get_program(path_module):
     import subprocess
 
     try:
+        fnull = open(os.devnull, 'w')
         cmd = 'grep -l "program" {0}/*.irp.f'.format(path_module.abs)
-        p = subprocess.check_output([cmd], shell=True)
+        p = subprocess.check_output([cmd], shell=True, stderr=fnull)
     except subprocess.CalledProcessError:
         return []
     else:
@@ -209,13 +284,15 @@ def ninja_binary_build(l_bin, path_module):
 
     # Build
     irpf90mk_path = join(path_module.abs, "irpf90.make")
+    ezfio_lib = join(qpackage_root, "EZFIO", "lib", "libezfio.a")
 
     l_abs_bin = [join(path_module.abs, binary) for binary in l_bin]
 
     l_string = []
     for path, abs_path in zip(l_bin, l_abs_bin):
-        l_string += ["build {0}: build_binary {1}".format(abs_path,
-                                                          irpf90mk_path)]
+        l_string += ["build {0}: build_binary {1} {2}".format(abs_path,
+                                                              ezfio_lib,
+                                                              irpf90mk_path)]
         l_string += ["   module = {0}".format(path_module.abs)]
         l_string += ["   binary = {0}".format(path)]
 
@@ -250,6 +327,9 @@ if __name__ == "__main__":
     l_string += ninja_symlink_rule()
     l_string += ninja_irpf90_make_rule()
     l_string += ninja_binary_rule()
+    l_string += ninja_ezfio_interface_config_rule()
+    l_string += ninja_ezfio_config_rule()
+    l_string += ninja_ezfio_rule()
 
     from collections import namedtuple
 
@@ -286,7 +366,18 @@ if __name__ == "__main__":
         l_binary = get_program(path_module)
         l_string += ninja_binary_build(l_binary, path_module)
 
-    l_string += ninja_ezfio_cfg_build()
+    l_module = get_module_with_ezfio_cfg()
+
+    l_string += ninja_ezfio_cfg_build(l_module)
+
+    l_ezfio_config = get_ezfio_config()
+
+    l_string_dump, l_file_create = ninja_ezfio_config_build(l_module_with_ezfio_cfg=l_module,
+                                                            l_ezfio_config=l_ezfio_config)
+    l_string += l_string_dump
 
     l_string += ninja_all_binary_build(l_module_to_compile)
+
+    l_string += ninja_ezfio_build(l_file_create)
+
     print "\n".join(l_string)
diff --git a/scripts/ezfio_interface/ei_handler.py b/scripts/ezfio_interface/ei_handler.py
index 8b28f41f..659dd9f5 100755
--- a/scripts/ezfio_interface/ei_handler.py
+++ b/scripts/ezfio_interface/ei_handler.py
@@ -5,7 +5,11 @@ Welcom the ei_handler.
 We will create all the ezfio related stuff from a EZFIO.cfg file.
 
 Usage:
-    ei_handler.py [--recursif] [--irpf90] [--ezfio_config] [--ocaml] [--ezfio_default]
+    ei_handler.py [--path_module=<module>]
+                  [--irpf90]
+                  [--ezfio_config]
+                  [--ocaml]
+                  [--ezfio_default]
     ei_handler.py ocaml_global
 
 By default all the option are executed.
@@ -67,7 +71,7 @@ from cache import cache
 
 
 from os import listdir
-from os.path import isdir, join, exists, islink
+from os.path import isdir, join, exists
 
 Type = namedtuple('Type', 'fancy ocaml fortran')
 
@@ -176,12 +180,12 @@ def get_type_dict():
 type_dict = get_type_dict()
 
 
-def get_dict_config_file(config_file_path, module_lower):
+def get_dict_config_file(module_obj):
     """
     Input:
-        config_file_path is the config file path
+        module_obj.path is the config file 
             (for example FULL_PATH/EZFIO.cfg)
-        module_lower is the MODULE name lowered
+        module_obj.lower is the MODULE name lowered
             (Ex fullci)
 
     Return a dict d[provider_name] = {type,
@@ -208,7 +212,6 @@ def get_dict_config_file(config_file_path, module_lower):
     # ~#~#~#~ #
     # I n i t #
     # ~#~#~#~ #
-
     d = defaultdict(dict)
     l_info_required = ["doc", "interface"]
     l_info_optional = ["ezfio_dir", "ezfio_name", "size"]
@@ -218,14 +221,14 @@ def get_dict_config_file(config_file_path, module_lower):
     # ~#~#~#~#~#~#~#~#~#~#~ #
 
     config_file = ConfigParser.ConfigParser()
-    config_file.readfp(open(config_file_path))
+    config_file.readfp(open(module_obj.path))
 
     # ~#~#~#~#~#~#~#~#~ #
     # F i l l _ d i c t #
     # ~#~#~#~#~#~#~#~#~ #
 
     def error(o, p, c):
-        "o option ; p provider_name ;c config_file_path"
+        "o option ; p provider_name ;c module_obj.path"
         print "You need a {0} for {1} in {2}".format(o, p, c)
 
     for section in config_file.sections():
@@ -234,7 +237,7 @@ def get_dict_config_file(config_file_path, module_lower):
 
         # Create the dictionary who containt the value per default
         d_default = {"ezfio_name": pvd,
-                     "ezfio_dir": module_lower,
+                     "ezfio_dir": module_obj.lower,
                      "size": "1"}
 
         # Check if type if avalaible
@@ -251,7 +254,7 @@ def get_dict_config_file(config_file_path, module_lower):
             try:
                 d[pvd][option] = config_file.get(section, option)
             except ConfigParser.NoOptionError:
-                error(option, pvd, config_file_path)
+                error(option, pvd, module_obj.path)
                 sys.exit(1)
 
         # Fill the dict with OPTIONAL information
@@ -267,7 +270,7 @@ def get_dict_config_file(config_file_path, module_lower):
             try:
                 default_raw = config_file.get(section, "default")
             except ConfigParser.NoOptionError:
-                error("default", pvd, config_file_path)
+                error("default", pvd, module_obj.path)
                 sys.exit(1)
 
             try:
@@ -322,14 +325,6 @@ def save_ezfio_provider(path_head, dict_code_provider):
 
     path = "{0}/ezfio_interface.irp.f".format(path_head)
 
-    try:
-        f = open(path, "r")
-    except IOError:
-        old_output = ""
-    else:
-        old_output = f.read()
-        f.close()
-
     l_output = ["! DO NOT MODIFY BY HAND",
                 "! Created by $QPACKAGE_ROOT/scripts/ezfio_interface.py",
                 "! from file {0}/EZFIO.cfg".format(path_head),
@@ -339,9 +334,8 @@ def save_ezfio_provider(path_head, dict_code_provider):
 
     output = "\n".join(l_output)
 
-    if output != old_output:
-        with open(path, "w+") as f:
-            f.write(output)
+    with open(path, "w+") as f:
+        f.write(output)
 
 
 def create_ezfio_stuff(dict_ezfio_cfg, config_or_default="config"):
@@ -462,17 +456,8 @@ def save_ezfio_config(module_lower, str_ezfio_config):
     path = "{0}/config/{1}.ezfio_interface_config".format(root_ezfio,
                                                           module_lower)
 
-    try:
-        f = open(path, "r")
-    except IOError:
-        old_output = ""
-    else:
-        old_output = f.read()
-        f.close()
-
-    if str_ezfio_config != old_output:
-        with open(path, "w+") as f:
-            f.write(str_ezfio_config)
+    with open(path, "w+") as f:
+        f.write(str_ezfio_config)
 
 
 def create_ezfio_default(dict_ezfio_cfg):
@@ -490,18 +475,8 @@ def save_ezfio_default(module_lower, str_ezfio_default):
         os.environ['QPACKAGE_ROOT'])
     path = "{0}/{1}.ezfio_interface_default".format(root_ezfio_default,
                                                     module_lower)
-
-    try:
-        f = open(path, "r")
-    except IOError:
-        old_output = ""
-    else:
-        old_output = f.read()
-        f.close()
-
-    if str_ezfio_default != old_output:
-        with open(path, "w+") as f:
-            f.write(str_ezfio_default)
+    with open(path, "w+") as f:
+        f.write(str_ezfio_default)
 
 
 def create_ocaml_input(dict_ezfio_cfg, module_lower):
@@ -607,17 +582,8 @@ def save_ocaml_input(module_lower, str_ocaml_input):
     path = "{0}/ocaml/Input_{1}.ml".format(os.environ['QPACKAGE_ROOT'],
                                            module_lower)
 
-    try:
-        f = open(path, "r")
-    except IOError:
-        old_output = ""
-    else:
-        old_output = f.read()
-        f.close()
-
-    if str_ocaml_input != old_output:
-        with open(path, "w+") as f:
-            f.write(str_ocaml_input)
+    with open(path, "w+") as f:
+        f.write(str_ocaml_input)
 
 
 def get_l_module_lower():
@@ -705,14 +671,6 @@ def save_ocaml_input_auto(str_ocaml_input_global):
 
     path = "{0}/ocaml/Input_auto_generated.ml".format(os.environ['QPACKAGE_ROOT'])
 
-    try:
-        f = open(path, "r")
-    except IOError:
-        old_output = ""
-    else:
-        old_output = f.read()
-        f.close()
-
     if str_ocaml_input_global != old_output:
         with open(path, "w+") as f:
             f.write(str_ocaml_input_global)
@@ -726,14 +684,6 @@ def save_ocaml_qp_edit(str_ocaml_qp_edit):
 
     path = "{0}/ocaml/qp_edit.ml".format(os.environ['QPACKAGE_ROOT'])
 
-    try:
-        f = open(path, "r")
-    except IOError:
-        old_output = ""
-    else:
-        old_output = f.read()
-        f.close()
-
     if str_ocaml_qp_edit != old_output:
         with open(path, "w+") as f:
             f.write(str_ocaml_qp_edit)
@@ -809,26 +759,18 @@ if __name__ == "__main__":
     #  G e t _ m o d u l e _ d i r #
     # ~#~#~#~#~#~#~#~#~#~#~#~#~#~# #
 
-    path_dirname = os.getcwd()
-    root_module = [i for i in path_dirname.split("/") if i][-1]
+    if arguments["--path_module"]:
+        path_dirname = os.path.abspath(arguments["--path_module"])
+    else:
+        path_dirname = os.getcwd()
 
+    root_module = os.path.split(path_dirname)[1]
+
+    l_module = [root_module]
     # ~#~#~#~#~#~#~#~#~#~#~#~#~#~#~#~#~#~#~#~# #
     #  G e t _ l _ d i c t _ e z f i o _ c f g #
     # ~#~#~#~#~#~#~#~#~#~#~#~#~#~#~#~#~#~#~#~# #
 
-    if arguments["--recursif"]:
-        def true_link(f):
-            return islink(join(path_dirname, f))
-
-        l_symlink = [f for f in listdir(path_dirname) if true_link(f)]
-    else:
-        l_symlink = []
-
-    l_module = [root_module] + l_symlink
-
-    def check_ezfio(f):
-        return exists()
-
     qpackage_root_src = join(os.environ['QPACKAGE_ROOT'], "src")
 
     l_module_with_ezfio = []
@@ -840,12 +782,12 @@ if __name__ == "__main__":
         if exists(path):
             l_module_with_ezfio.append(Module(path, f.lower()))
 
-    l_dict_ezfio_cfg = [(get_dict_config_file(m.path, m.lower), m) for m in l_module_with_ezfio]
+    l_dict_ezfio_cfg = [(m, get_dict_config_file(m)) for m in l_module_with_ezfio]
 
     #  _
     # /   _   _|  _     _   _  ._   _  ._ _. _|_ o  _  ._
     # \_ (_) (_| (/_   (_| (/_ | | (/_ | (_|  |_ | (_) | |
     #                   _|
 
-    for (dict_ezfio_cfg, m) in l_dict_ezfio_cfg:
+    for (m, dict_ezfio_cfg) in l_dict_ezfio_cfg:
         code_generation(arguments, dict_ezfio_cfg, m)
diff --git a/src/q_package.ezfio_config b/src/Integrals_Bielec/q_package.ezfio_config
similarity index 100%
rename from src/q_package.ezfio_config
rename to src/Integrals_Bielec/q_package.ezfio_config
diff --git a/src/Integrals_Monoelec/var_pt2_ratio.irp.f b/src/Integrals_Monoelec/var_pt2_ratio.irp.f
new file mode 100644
index 00000000..e69de29b