setup_build.py: avoid absolute path

[Mingli-Yu]

Prevent absolute path from ending up in the egg-info SOURCES.txt.

Signed-off-by: Mingli Yu mingli.yu@windriver.com

[Mingli-Yu]

This PULL request used to fix #1802

[codecov]

Codecov Report

Merging #1803 (3f10233) into master (7766ca7) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1803   +/-   ##
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  Coverage   88.52%   88.52%           
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  Files          17       17           
  Lines        2275     2275           
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  Hits         2014     2014           
  Misses        261      261           

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[takluyver]

I think the idea of using __file__ like that is that it can work regardless of what the cwd is when you run it. But I'm not sure if that's actually something we need to worry about, or if we should assume that it has to be built from the directory containing setup.py anyway.

I also don't know if SOURCES.txt actually matters for anything. The .egg-infodirectory is something non-standard that setuptools produces, and I don't think SOURCES.txt is part of any official standard.

[takluyver]

Closed as we haven't really established that there's a problem to solve - see #1802.