如何在python2环境中安装Bazel？

Question

How do you install Bazel in a python2 environment? The tensorflow website has an error posted on the such as this "Caution: Because of an bazel bug, we only support building the Android demo app within a Python 2 environment", (See related Bazel installation on windows">Bazel installation on Windows). How do you install Bazel in a python2 environment( to get apps working on Windows, using bazel)? The Bazel install in a python2 environment may be a workaround for the error shown earlier on the Tensorflow website, they do not seem to have any other workarounds known.

Answer 1

1. Download and install Python2 (eg from python.org: Python 2.7.15, 64-bit version [1])
2. Use the --python_path flag [2] to tell Bazel where's the Python interpreter.

For example if you installed Python2 under c:\\python2 , run Bazel like so:

c:\tensorflow> bazel build --python_path=c:/python2/python.exe //foo:bar

If you want Bazel to always use this flag in this workspace ( c:\\tensorflow ), add the following line to c:\\tensorflow\\.bazelrc :

build --python_path=c:/python2/python.exe

(You may need to add this line every time you re-run the configure script.)

Update: here's more info about .bazelrc files [3], what they are, where they are, how to specify them.

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[1] https://www.python.org/ftp/python/2.7.15/python-2.7.15.amd64.msi

[2] https://docs.bazel.build/versions/master/command-line-reference.html

[3] https://docs.bazel.build/versions/master/user-manual.html#bazelrc