[cppyy] Remove code related to finding CPyCppyy API header path

bindings/pyroot/cppyy/cppyy/python/cppyy/__init__.py

@@ -40,7 +40,7 @@
     'include',                # load and jit a header file
     'c_include',              # load and jit a C header file
     'load_library',           # load a shared library
     'nullptr',                # unique pointer representing NULL
     'sizeof',                 # size of a C++ type
     'typeid',                 # typeid of a C++ type
     'multi',                  # helper for multiple inheritance
@@ -64,27 +64,27 @@
     ispypy = False
 
 from . import _typemap
 from ._version import __version__
 
 # import separately instead of in the above try/except block for easier to
 # understand tracebacks
 if ispypy:
     from ._pypy_cppyy import *
 else:
     from ._cpython_cppyy import *
 
 
 #- allow importing from gbl --------------------------------------------------
 sys.modules['cppyy.gbl'] = gbl
 sys.modules['cppyy.gbl.std'] = gbl.std
 
 
 #- external typemap ----------------------------------------------------------
 _typemap.initialize(_backend)               # also creates (u)int8_t mapper
 
 try:
     gbl.std.int8_t  = gbl.int8_t            # ensures same _integer_ type
     gbl.std.uint8_t = gbl.uint8_t
 except (AttributeError, TypeError):
     pass
 
@@ -297,88 +297,6 @@
     if os.path.exists(apipath) and os.path.exists(os.path.join(apipath, 'Python.h')):
         add_include_path(apipath)
 
-# add access to extra headers for dispatcher (CPyCppyy only (?))
-if not ispypy:
-    try:
-        apipath_extra = os.environ['CPPYY_API_PATH']
-        if os.path.basename(apipath_extra) == 'CPyCppyy':
-            apipath_extra = os.path.dirname(apipath_extra)
-    except KeyError:
-        apipath_extra = None
-
-    if apipath_extra is None:
-        try:
-            if 0x30a0000 <= sys.hexversion:
-                import importlib.metadata as m
-
-                for p in m.files('CPyCppyy'):
-                    if p.match('API.h'):
-                        ape = p.locate()
-                        break
-                del p, m
-            else:
-                import pkg_resources as pr
-
-                d = pr.get_distribution('CPyCppyy')
-                for line in d.get_metadata_lines('RECORD'):
-                    if 'API.h' in line:
-                        ape = os.path.join(d.location, line[0:line.find(',')])
-                        break
-                del line, d, pr
-
-            if os.path.exists(ape):
-                apipath_extra = os.path.dirname(os.path.dirname(ape))
-            del ape
-        except Exception:
-            pass
-
-    if apipath_extra is None:
-        ldversion = sysconfig.get_config_var('LDVERSION')
-        if not ldversion:
-            ldversion = sys.version[:3]
-
-        apipath_extra = os.path.join(os.path.dirname(apipath), 'site', 'python'+ldversion)
-        if not os.path.exists(os.path.join(apipath_extra, 'CPyCppyy')):
-            import glob
-            import platform
-
-            if platform.system() == "Windows":
-                # Install locations are handled differently on Windows
-                import libcppyy
-
-                ape = os.path.dirname(libcppyy.__file__)
-            else:
-                import cppyy.libcppyy as libcppyy
-
-                ape = os.path.dirname(libcppyy.__file__)
-            # a "normal" structure finds the include directory up to 3 levels up,
-            # ie. dropping lib/pythonx.y[md]/site-packages
-            for i in range(3):
-                if os.path.exists(os.path.join(ape, 'include')):
-                    break
-                ape = os.path.dirname(ape)
-
-            ape = os.path.join(ape, 'include')
-            if os.path.exists(os.path.join(ape, 'CPyCppyy')):
-                apipath_extra = ape
-            else:
-              # add back pythonx.y or site/pythonx.y if present
-                for p in glob.glob(os.path.join(ape, 'python'+sys.version[:3]+'*'))+\
-                         glob.glob(os.path.join(ape, '*', 'python'+sys.version[:3]+'*')):
-                    if os.path.exists(os.path.join(p, 'CPyCppyy')):
-                        apipath_extra = p
-                        break
-
-    if apipath_extra.lower() != 'none':
-        if not os.path.exists(os.path.join(apipath_extra, 'CPyCppyy')):
-            warnings.warn("CPyCppyy API not found (tried: %s); "
-                          "set CPPYY_API_PATH envar to the 'CPyCppyy' API directory to fix"
-                          % apipath_extra)
-        else:
-            add_include_path(apipath_extra)
-
-    del apipath_extra
-
 if os.getenv('CONDA_PREFIX'):
   # MacOS, Linux
     include_path = os.path.join(os.getenv('CONDA_PREFIX'), 'include')