python: handle env filtering on pth check
Since ENV filtering became the default this has been chucking erroneous warnings from both `brew doctor` and things like `brew install pygobject` about needing to run: ``` echo 'import site; site.addsitedir("/usr/local/lib/python2.7/site-packages")' >> /Users/xyz/Library/Python/2.7/lib/python/site-packages/homebrew.pth ``` even though I had Homebrew's `python` installed.
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@ -35,7 +35,7 @@ module Language
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probe_file = homebrew_site_packages(version)/"homebrew-pth-probe.pth"
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begin
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probe_file.atomic_write("import site; site.homebrew_was_here = True")
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quiet_system python, "-c", "import site; assert(site.homebrew_was_here)"
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with_homebrew_path { quiet_system python, "-c", "import site; assert(site.homebrew_was_here)" }
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ensure
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probe_file.unlink if probe_file.exist?
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end
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