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f4f69f4a95
Using pkg_resources is probably better if it works -- zope.interface doesn't have a __version__ attribute that we can query, but pkg_resources knows zope.interface's version number, for one thing.
This code falls back to the old way -- looking at the __version__ attributes and __file__ attributes -- if the pkg_resources way doesn't answer.
Note that this patch also changes the capitalization of "Nevow", "Twisted", and "pyOpenSSL", and the spelling of "allmydata-tahoe". These changes are not frivolous: they are reflecting the fact that we are naming Python packages (technically called Python "distributions") instead of Python modules (technically and confusingly called Python "packages") here. The package ("distribution") is named "allmydata-tahoe". The module ("package") is named "allmydata".
65 lines
3.3 KiB
Python
65 lines
3.3 KiB
Python
install_requires=[
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# we require 0.6c8 to build, but can handle older versions to run
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"setuptools >= 0.6c6",
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# pycryptopp < 0.5 had a bug which, using a Microsoft
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# compiler, or using some versions of g++ while linking
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# against certain older versions of Crypto++, would cause
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# incorrect AES results.
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"pycryptopp >= 0.5",
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"zfec >= 1.1.0",
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# We had a unicode problem with simplejson 1.8.1 on dapper -- see ticket #543,
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# but we want to install using Gutsy or Hardy simplejson .deb's if possible --
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# see ticket #555. Feisty has simplejson 1.4
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"simplejson >= 1.4",
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"zope.interface",
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"Twisted >= 2.4.0",
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"foolscap[secure_connections] >= 0.3.1",
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"Nevow >= 0.6.0",
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]
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import platform
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if platform.system() == "Windows":
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# Twisted requires pywin32 if it is going to offer process management functionality, or if
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# it is going to offer iocp reactor. We currently require process management. It would be
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# better if Twisted would declare that it requires pywin32 if it is going to offer process
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# management. Then the specification and the evolution of Twisted's reliance on pywin32 can
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# be confined to the Twisted setup data, and Tahoe can remain blissfully ignorant about such
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# things as if a future version of Twisted requires a different version of pywin32, or if a
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# future version of Twisted implements process management without using pywin32 at all,
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# etc.. That is twisted ticket #3238 -- http://twistedmatrix.com/trac/ticket/3238 . But
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# until Twisted does that, Tahoe needs to be non-ignorant of the following requirement:
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install_requires.append('pywin32')
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import sys
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if hasattr(sys, 'frozen'): # for py2exe
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install_requires=[]
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def require_auto_deps():
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"""
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The purpose of this function is to raise a pkg_resources exception if any of the
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requirements can't be imported. This is just to give earlier and more explicit error
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messages, as opposed to waiting until the source code tries to import some module from one
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of these packages and gets an ImportError. This function gets called from
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src/allmydata/__init__.py .
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"""
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import pkg_resources
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for requirement in install_requires:
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try:
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pkg_resources.require(requirement)
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except pkg_resources.DistributionNotFound:
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# there is no .egg-info present for this requirement, which
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# either means that it isn't installed, or it is installed in a
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# way that pkg_resources can't find it (but regular python
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# might). There are several older Linux distributions which
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# provide our dependencies just fine, but they don't ship
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# .egg-info files. Note that if there *is* an .egg-info file,
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# but it shows a too-old version, then we'll get a
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# VersionConflict error instead of DistributionNotFound.
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pass
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def get_package_versions_from_setuptools():
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import pkg_resources
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return dict([(p.project_name, (p.version, p.location)) for p in pkg_resources.require('allmydata-tahoe')])
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