97c01e48ed
Currently we have all our elements and library files in a top-level directory and install them into <root>/share/diskimage-builder/[elements|lib] (where root is either / or the root of a virtualenv). The problem with this is that editable/development installs (pip -e) do *not* install data_files. Thus we have no canonical location to look for elements -- leading to the various odd things we do such as a whole bunch of guessing at the top of disk-image-create and having a special test-loader in tests/test_elements.py so we can run python unit tests on those elements that have it. data_files is really the wrong thing to use for what are essentially assets of the program. data_files install works well for things like config-files, init.d files or dropping documentation files. By moving the elements under the diskimage_builder package, we always know where they are relative to where we import from. In fact, pkg_resources has an api for this which we wrap in the new diskimage_builder/paths.py helper [1]. We use this helper to find the correct path in the couple of places we need to find the base-elements dir, and for the paths to import the library shell functions. Elements such as svc-map and pkg-map include python unit-tests, which we do not need tests/test_elements.py to special-case load any more. They just get found automatically by the normal subunit loader. I have a follow-on change (I69ca3d26fede0506a6353c077c69f735c8d84d28) to move disk-image-create to a regular python entry-point. Unfortunately, this has to move to work with setuptools. You'd think a symlink under diskimage_builder/[elements|lib] would work, but it doesn't. [1] this API handles stuff like getting files out of .zip archive modules, which we don't do. Essentially for us it's returning __file__. Change-Id: I5e3e3c97f385b1a4ff2031a161a55b231895df5b
72 lines
2.7 KiB
Python
Executable file
72 lines
2.7 KiB
Python
Executable file
#!/usr/bin/env python
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from __future__ import print_function
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import os.path
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def main():
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home = os.path.expanduser("~")
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backup_configs(home)
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indices = []
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if (os.environ.get('DIB_PYPI_MIRROR_URL') or
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os.environ.get('PYPI_MIRROR_URL')):
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candidates = [k for k in os.environ if
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k.startswith('DIB_PYPI_MIRROR_URL')]
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back_compat = [k for k in os.environ if
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k.startswith('PYPI_MIRROR_URL')]
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if len(back_compat) > 0:
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print('DEPRECATION WARNING: Please use DIB_PYPI_MIRROR_URL* rather'
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' than PYPI_MIRROR_URL*')
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candidates += back_compat
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indices = list(map(os.environ.get, sorted(candidates)))
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else:
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indices = ['file:///tmp/pypi']
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print('WARNING: You are using the pypi element but no pypi mirror is '
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'defined via the PYPI_MIRROR_URL env variable')
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easy_index = indices[-1]
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use_pypi_python_org = True
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if os.environ.get('DIB_OFFLINE'):
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use_pypi_python_org = False
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if os.environ.get('DIB_NO_PYPI_PIP'):
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use_pypi_python_org = False
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if use_pypi_python_org:
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indices.append('https://pypi.python.org/simple')
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retries = os.environ.get('DIB_PIP_RETRIES')
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with file(home + '/.pip/pip.conf', 'wt') as output:
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output.write('[global]\n')
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output.write('log = %s/pip.log\n' % (home,))
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output.write('index-url = %s\n' % (indices[0],))
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if retries is not None:
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output.write('retries = %s\n' % retries)
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for index in indices[1:]:
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output.write('extra-index-url = %s\n' % (index,))
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with file(home + '/.pydistutils.cfg', 'wt') as output:
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output.write('[easy_install]\n')
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output.write('index_url = %s\n' % (easy_index,))
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def backup_configs(home):
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pip_dir = home + '/.pip'
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if not os.path.exists(pip_dir):
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os.mkdir(pip_dir)
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if os.path.exists(pip_dir + '/pip.conf'):
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os.rename(pip_dir + '/pip.conf', pip_dir + '/pip.conf.orig')
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if os.path.exists(home + '/.pydistutils.cfg'):
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os.rename(home + '/.pydistutils.cfg', home + '/.pydistutils.cfg.orig')
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if __name__ == '__main__':
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main()
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