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POCygwin and Windows path conflict; using both Windows and cygwin Python
 

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  1. POCygwin and Windows path conflict; using both Windows and cygwin Python
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    <p>I've installed cygwin on Windows XP. Mercurial on cygwin stopped working after I installed some software on Windows. The symptom can be simplified to python not being able to locate modules in its library:</p> <pre><code>&gt;&gt;&gt; import os Traceback (most recent call last): file "&lt;stdin&gt;", line 1, in &lt;module&gt; ImportError: No module named os </code></pre> <p>One of the pieces of software I installed in Windows (subversion) uses python so now Windows has its own Python installation. Don't ask why I wish to use mercurial under cygwin and subversion under Windows; suffice to say I do, but that's beside the point. It seems cygwin tries to use the Windows python instead of its own, or at least that's what I think is happening. If that's not the cause, please enlighten me. Anyway...</p> <p>$ find /cygdrive/c -name os.py /cygdrive/c/csvn/Python25/Lib/os.py /cygdrive/c/cygwin/lib/python2.6/os.py</p> <p>echo $PATH confirms that /cygdrive/c/csvn/Python25 is before /usr/lib/python2.6. I'm no cygwin wiz, but from what I can tell /etc/profile adds the Windows path to cygwin's $PATH, and I don't know how to keep it from doing so. As a workaround I modified .profile to explicitly set PATH, excluding those paths from Windows. But, the problem remains:</p> <pre><code>$ echo $PATH /usr/local/bin:/usr/bin:/usr/lib/python2.6 $ hg 'import site' failed; use -v for traceback Traceback (most recent call last): File "/usr/bin/hg", line 10, in &lt;module&gt; import os ImportError: No module named os $ ls /usr/lib/python2.6/os.py /usr/lib/python2.6/os.py </code></pre> <p>It looks like the path conflict has not actually been resolved, because when I issue the above "find" command again I get the same results, with /cygdrive/c/csvn/Python25/Lib/os.py showing up first. In theory there may be some other reason python isn't working on cygwin, but not being able to control my PATH would still be a problem. Any ideas? </p>
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    1. COMy colleague had the same problem. Additional information is, that `sys.path` contains bogus content. Entries starting with `C/csvn/` and `C/Lib` and no correct entries. Now the default sys.path is supposed to be hardcoded in the binary, so it has to be finding some wrong .dlls or reading something wrong from registry (but cygwin apps are not supposed to read those). Unfortunately I don't know what to do about that (colleague fixed it by uninstalling the collabnet subversion client).
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