v8/.vpython
Sergiy Byelozyorov b6687e3136 Add a comment for the VPython dep
R=machenbach@chromium.org

Bug: chromium:777345
Change-Id: I54e8121ada8590d082bcb172668a82e00b5cf248
Reviewed-on: https://chromium-review.googlesource.com/737632
Commit-Queue: Sergiy Byelozyorov <sergiyb@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48925}
2017-10-25 12:23:35 +00:00

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# This is a vpython "spec" file.
#
# It describes patterns for python wheel dependencies of the python scripts in
# the chromium repo, particularly for dependencies that have compiled components
# (since pure-python dependencies can be easily vendored into third_party).
#
# When vpython is invoked, it finds this file and builds a python VirtualEnv,
# containing all of the dependencies described in this file, fetching them from
# CIPD (the "Chrome Infrastructure Package Deployer" service). Unlike `pip`,
# this never requires the end-user machine to have a working python extension
# compilation environment. All of these packages are built using:
# https://chromium.googlesource.com/infra/infra/+/master/infra/tools/dockerbuild/
#
# All python scripts in the repo share this same spec, to avoid dependency
# fragmentation.
#
# If you have depot_tools installed in your $PATH, you can invoke python scripts
# in this repo by running them as you normally would run them, except
# substituting `vpython` instead of `python` on the command line, e.g.:
# vpython path/to/script.py some --arguments
#
# Read more about `vpython` and how to modify this file here:
# https://chromium.googlesource.com/infra/infra/+/master/doc/users/vpython.md
python_version: "2.7"
# Needed by third_party/catapult/devil/devil, which is imported by
# build/android/test_runner.py when running performance tests.
wheel: <
name: "infra/python/wheels/psutil/${vpython_platform}"
version: "version:5.2.2"
>