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"""
Script to copy and update libtbx_env contents
Usage: libtbx.python update_libtbx_env.py
"""
from __future__ import absolute_import, division, print_function
import argparse
import os
import pickle
import shutil
import sys
from pprint import pprint
from libtbx.path import absolute_path
# =============================================================================
def copy_libtbx_env(dest_dir, default_dir):
'''
Function that copies libtbx_env from $LIBTBX_BUILD to $PREFIX
If $LIBTBX_BUILD is not set, no copy is done. If libtbx_env does not
exist, an IOError is raised.
Parameters
----------
default_dir: str
The directory to copy libtbx_env
Returns
-------
path or None: if the file is copied, the newly created path is returned
'''
value = None
if os.getenv('LIBTBX_BUILD') is not None:
env_name = 'libtbx_env'
src_dir = os.getenv('LIBTBX_BUILD')
dst_dir = os.path.join(dest_dir, os.path.relpath(default_dir, os.sep))
src = os.path.join(src_dir, env_name)
dst = os.path.join(dst_dir, env_name)
print(f"Copying {env_name} from {src_dir} to {dst_dir}")
if not os.path.isfile(src):
raise IOError(f'The "{env_name}" file does not exist in {src}.')
if not os.path.exists(dst_dir):
# assumes that only the last level needs to be created.
os.mkdir(dst_dir)
value = shutil.copy(src, dst)
return value
def fix_path(env, path):
return env.as_relocatable_path(path.relocatable.replace("../../..", "lib/python3/dist-packages"))
# =============================================================================
def update_libtbx_env(dest_dir, default_dir):
'''
Function that updates libtbx_env so that modules can be loaded from
standard locations in $PREFIX
Parameters
----------
default_dir: str
The directory to copy libtbx_env
Returns
-------
None
'''
dst_dir = os.path.join(dest_dir, os.path.relpath(default_dir, os.sep))
env_abs_path = os.path.join(dst_dir, 'libtbx_env')
# set LIBTBX_BUILD and load libtbx_env from ${destdir}/${datadir}
os.environ['LIBTBX_BUILD'] = dst_dir
import libtbx.load_env
sys_prefix = sys.prefix
# basic path changes
env = libtbx.env
pprint(env.__dict__)
env.build_path = absolute_path(sys.prefix)
env.set_derived_paths()
env.exe_path = env.bin_path
env.pythonpath = list()
env.python_exe = env.as_relocatable_path(sys.executable)
env.no_bin_python = True
site_packages_path = None
for path in sys.path:
if path.endswith('site-packages'):
site_packages_path = env.as_relocatable_path(path)
break
relocatable_sys_prefix = env.as_relocatable_path(sys_prefix)
repository_paths = env.repository_paths
env.repository_paths = [fix_path(env, p) for p in repository_paths]
env.scons_dist_path = relocatable_sys_prefix
# update the _dispatcher_registry path maybe temporary
new = {}
for k, v in env._dispatcher_registry.items():
k_new = env.as_relocatable_path(k.relocatable)
new[k_new] = fix_path(env, v)
env._dispatcher_registry = new
# # libtbx.python dispatcher
# env.write_conda_dispatcher(
# source_file=env.python_exe,
# target_file='libtbx.python',
# source_is_python_exe=True)
# update module_dict
for k, v in env.module_dict.items():
new_dist_paths = [fix_path(env, p) if p is not None else None for p in v.dist_paths]
v.dist_paths = new_dist_paths
# update module_dist_paths
for k, v in env.module_dist_paths.items():
env.module_dist_paths[k] = fix_path(env, v)
# update path_utility
env.path_utility = fix_path(env, env.path_utility)
# update dispatchers
#env.reset_dispatcher_bookkeeping()
#env.write_python_and_show_path_duplicates()
#for module in env.module_list:
# module.process_command_line_directories()
# save the env
env.build_path = absolute_path(default_dir)
env.installed = True
#env.reset_dispatcher_support()
with open(env_abs_path, "wb") as f:
pickle.dump(env, f, 0)
print(f"Saved {env_abs_path} env")
pprint(env.__dict__)
return 0
# =============================================================================
def run():
parser = argparse.ArgumentParser(description=__doc__,
formatter_class=argparse.RawDescriptionHelpFormatter)
# default location is ${PREFIX}/lib/cctbx/pythonX.Y
default_dir = os.path.join(sys.prefix, "lib", "cctbx", f"python{sys.version_info[0]}.{sys.version_info[1]}")
dest_dir = os.sep
parser.add_argument('--default-dir', dest='default_dir', default=default_dir, type=str,
help="""The new default for the location of libtbx_env. By default,
the new location is ${PREFIX}/lib/cctbx/pythonX.Y. This feature is not
fully supported yet.""")
parser.add_argument('--dest-dir', dest='dest_dir', default=dest_dir, type=str,
help="""The destdir for the location of cctbx installation. By default,
the new location is ${destdir}/${PREFIX}/lib/cctbx/python/X.Y. This feature is not
fully supported yet.""")
namespace = parser.parse_args()
copy_libtbx_env(dest_dir=namespace.dest_dir,
default_dir=namespace.default_dir)
update_libtbx_env(dest_dir=namespace.dest_dir,
default_dir=namespace.default_dir)
return 0
# =============================================================================
if __name__ == '__main__':
sys.exit(run())
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