76 lines
2.3 KiB
Python
76 lines
2.3 KiB
Python
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""" Support virtualenv in pymode. """
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import os
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import sys
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import site
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from .environment import env
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@env.catch_exceptions
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def enable_virtualenv():
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""" Enable virtualenv for vim.
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:return bool:
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"""
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path = env.var('g:pymode_virtualenv_path')
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# Normalize path to be an absolute path
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# If an absolute path is provided, that path will be returned, otherwise
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# the returned path will be an absolute path but computed relative
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# to the current working directory
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path = os.path.abspath(path)
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enabled = env.var('g:pymode_virtualenv_enabled')
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if path == enabled:
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env.message('Virtualenv %s already enabled.' % path)
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return env.stop()
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activate_this = os.path.join(os.path.join(path, 'bin'), 'activate_this.py')
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# Fix for windows
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if not os.path.exists(activate_this):
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activate_this = os.path.join(
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os.path.join(path, 'Scripts'), 'activate_this.py')
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try:
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with open(activate_this) as f:
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source = f.read()
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exec(compile( # noqa
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source, activate_this, 'exec'), dict(__file__=activate_this))
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except IOError:
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_activate_env_from_path(path)
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env.message('Activate virtualenv: ' + path)
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env.let('g:pymode_virtualenv_enabled', path)
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return True
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def _activate_env_from_path(env_path):
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""" Fix when `activate_this.py` does not exist.
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For Python 3.3 and newer, a new command-line tool `pyvenv` create venv
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will not provide 'activate_this.py'.
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"""
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prev_sys_path = list(sys.path)
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if sys.platform == 'win32':
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site_packages_paths = [os.path.join(env_path, 'Lib', 'site-packages')]
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else:
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lib_path = os.path.join(env_path, 'lib')
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site_packages_paths = [os.path.join(lib_path, lib, 'site-packages')
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for lib in os.listdir(lib_path)]
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for site_packages_path in site_packages_paths:
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site.addsitedir(site_packages_path)
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sys.real_prefix = sys.prefix
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sys.prefix = env_path
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sys.exec_prefix = env_path
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# Move the added items to the front of the path:
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new_sys_path = []
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for item in list(sys.path):
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if item not in prev_sys_path:
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new_sys_path.append(item)
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sys.path.remove(item)
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sys.path[:0] = new_sys_path
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