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Alexander Thomas b5c63ce757 [infra] Migrate scripts to python3 
* Migrate to python3; drop python support.
* Update Windows toolchain support.
* Remove some unused methods.
* Python 2.7 is still needed on Windows.
* Update gsutil to a version that supports python3.

Fixes: https://github.com/dart-lang/sdk/issues/28793

TEST=Manually tested common user journeys.

Change-Id: I663a22b237a548bb82dc2e601e399e3bc3649211
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/192182
Reviewed-by: William Hesse <whesse@google.com>
Reviewed-by: Alexander Aprelev <aam@google.com>
2021-04-15 10:10:20 +00:00
..
win [infra] Roll toolchain. 2018-03-01 20:09:29 +00:00
README.md [infra] Update Clang toolchain and GN 2018-11-29 15:37:40 +00:00
update.py [infra] Migrate scripts to python3 2021-04-15 10:10:20 +00:00

README.md

To build Dart for Mac and Linux, we pull Fuchsia's buildtools, which is also used by Flutter. Fuchsia's buildtools includes gn, and the clang toolchain. Fuchsia buildtools vends clang-format as part of the clang toolchain. Since Fuchsia's buildtools doesn't vend a clang toolchain for Windows, we can't get a Windows clang-format binary from it. Therefore, from Chromium's buildtools here:

https://chromium.googlesource.com/chromium/buildtools

we copy the hash file for its Windows clang-format binary, and pull it down from google storage in the update.py script in this directory.

To update to a newer Windows clang-format binary, simply overwrite the hash in clang-format.exe.sha1 with a newer one, and then do a 'gclient sync'.