50 lines
1.3 KiB
Python
50 lines
1.3 KiB
Python
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#!/usr/bin/env python
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# Copyright 2014 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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# Modified from go/env.py in Chromium infrastructure's repository to patch out
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# everything but the core toolchain.
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#
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# https://chromium.googlesource.com/infra/infra/
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"""Can be used to point environment variable to hermetic Go toolset.
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Usage (on linux and mac):
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$ eval `./env.py`
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$ go version
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Or it can be used to wrap a command:
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$ ./env.py go version
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"""
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assert __name__ == '__main__'
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import imp
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import os
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import subprocess
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import sys
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# Do not want to mess with sys.path, load the module directly.
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bootstrap = imp.load_source(
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'bootstrap', os.path.join(os.path.dirname(__file__), 'bootstrap.py'))
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old = os.environ.copy()
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new = bootstrap.prepare_go_environ()
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if len(sys.argv) == 1:
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for key, value in sorted(new.iteritems()):
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if old.get(key) != value:
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print 'export %s="%s"' % (key, value)
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else:
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exe = sys.argv[1]
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if exe == 'python':
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exe = sys.executable
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else:
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# Help Windows to find the executable in new PATH, do it only when
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# executable is referenced by name (and not by path).
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if os.sep not in exe:
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exe = bootstrap.find_executable(exe, [bootstrap.WORKSPACE])
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sys.exit(subprocess.call([exe] + sys.argv[2:], env=new))
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