+# Note: do not import any module from Tahoe-LAFS itself in this
+# file. Also please avoid importing modules from other packages than
+# the Python Standard Library if at all possible (exception: we rely
+# on importing pkg_resources, which is provided by setuptools,
+# zetuptoolz, distribute, and perhaps in the future distutils2, for
+# the require_auto_deps() function.)
+
+install_requires=[
+ # we require newer versions of setuptools (actually
+ # zetuptoolz) to build, but can handle older versions to run
+ "setuptools >= 0.6c6",
+
+ "zfec >= 1.1.0",
+
+ # Feisty has simplejson 1.4
+ "simplejson >= 1.4",
+
+ "zope.interface",
+ "Twisted >= 2.4.0",
+
+ # foolscap < 0.5.1 had a performance bug which spent
+ # O(N**2) CPU for transferring large mutable files
+ # of size N.
+ "foolscap[secure_connections] >= 0.5.1",
+ "Nevow >= 0.6.0",
+
+ # Needed for SFTP. pyasn1 is needed by twisted.conch in Twisted >= 9.0.
+ # pycrypto 2.2 doesn't work due to https://bugs.launchpad.net/pycrypto/+bug/620253
+ "pycrypto == 2.0.1, == 2.1, >= 2.3",
+ "pyasn1 >= 0.0.8a",
+
+ # Will be needed to test web apps, but not yet. See #1001.
+ #"windmill >= 1.3",
+ ]
+
+import platform
+if platform.machine().lower() in ['i386', 'x86_64', 'amd64', '']:
+ # pycryptopp v0.5.20 fixes bugs in SHA-256 and AES on x86 or amd64
+ # (from Crypto++ revisions 470, 471, 480, 492). The '' is there
+ # in case platform.machine is broken and this is actually an x86
+ # or amd64 machine.
+ install_requires.append("pycryptopp >= 0.5.20")
+else:
+ # pycryptopp v0.5.13 had a new bundled version of Crypto++
+ # (v5.6.0) and a new bundled version of setuptools (although that
+ # shouldn't make any different to users of pycryptopp).
+ install_requires.append("pycryptopp >= 0.5.14")
+
+
+# Sqlite comes built into Python >= 2.5, and is provided by the "pysqlite"
+# distribution for Python 2.4.
+import sys
+if sys.version_info < (2, 5):
+ # pysqlite v2.0.5 was shipped in Ubuntu 6.06 LTS "dapper" and Nexenta NCP 1.
+ install_requires.append("pysqlite >= 2.0.5")
+
+## The following block is commented-out because there is not currently a pywin32 package which
+## can be easy_install'ed and also which actually makes "import win32api" succeed.
+## See http://sourceforge.net/tracker/index.php?func=detail&aid=1799934&group_id=78018&atid=551954
+## Users have to manually install pywin32 on Windows before installing Tahoe.
+##import platform
+##if platform.system() == "Windows":
+## # Twisted requires pywin32 if it is going to offer process management functionality, or if
+## # it is going to offer iocp reactor. We currently require process management. It would be
+## # better if Twisted would declare that it requires pywin32 if it is going to offer process
+## # management. That is twisted ticket #3238 -- http://twistedmatrix.com/trac/ticket/3238 .
+## # On the other hand, Tahoe also depends on pywin32 for getting free disk space statistics
+## # (although that is not a hard requirement: if win32api can't be imported then we don't
+## # rely on having the disk stats).
+## install_requires.append('pywin32')
+
+if hasattr(sys, 'frozen'): # for py2exe
+ install_requires=[]
+del sys # clean up namespace
+
+def require_python_version():
+ import sys, platform
+
+ # we require 2.4.4 on non-UCS-2, non-Redhat builds to avoid <http://www.python.org/news/security/PSF-2006-001/>
+ # we require 2.4.3 on non-UCS-2 Redhat, because 2.4.3 is common on Redhat-based distros and will have patched the above bug
+ # we require at least 2.4.2 in any case to avoid a bug in the base64 module: <http://bugs.python.org/issue1171487>
+ if sys.maxunicode == 65535:
+ if sys.version_info < (2, 4, 2) or sys.version_info[0] > 2:
+ raise NotImplementedError("Tahoe-LAFS current requires Python v2.4.2 or greater "
+ "for a UCS-2 build (but less than v3), not %r" %
+ (sys.version_info,))
+ elif platform.platform().lower().find('redhat') >= 0:
+ if sys.version_info < (2, 4, 3) or sys.version_info[0] > 2:
+ raise NotImplementedError("Tahoe-LAFS current requires Python v2.4.3 or greater "
+ "on Redhat-based distributions (but less than v3), not %r" %
+ (sys.version_info,))
+ else:
+ if sys.version_info < (2, 4, 4) or sys.version_info[0] > 2:
+ raise NotImplementedError("Tahoe-LAFS current requires Python v2.4.4 or greater "
+ "for a non-UCS-2 build (but less than v3), not %r" %
+ (sys.version_info,))
+
+def require_auto_deps():
+ """
+ The purpose of this function is to raise a pkg_resources exception if any of the
+ requirements can't be imported. This is just to give earlier and more explicit error
+ messages, as opposed to waiting until the source code tries to import some module from one
+ of these packages and gets an ImportError. This function gets called from
+ src/allmydata/__init__.py .
+ """
+ require_python_version()
+
+ import pkg_resources
+ for requirement in install_requires:
+ try:
+ pkg_resources.require(requirement)
+ except pkg_resources.DistributionNotFound:
+ # there is no .egg-info present for this requirement, which
+ # either means that it isn't installed, or it is installed in a
+ # way that pkg_resources can't find it (but regular python
+ # might). There are several older Linux distributions which
+ # provide our dependencies just fine, but they don't ship
+ # .egg-info files. Note that if there *is* an .egg-info file,
+ # but it shows a too-old version, then we'll get a
+ # VersionConflict error instead of DistributionNotFound.
+ pass