Revert "Disable validation-test/Python/build_swift.swift"

[compnerd]

This reverts commit df2e553. Repair
the preset rather than disabling the tests.

Replace this paragraph with a description of your changes and rationale. Provide links to external references/discussions if appropriate.

Resolves SR-NNNN.

[compnerd]

@swift-ci please test tensorflow

[compnerd]

CC: @shabalind

[compnerd]

I dont think that the sourcekit failures should be related?

[compnerd]

@swift-ci please clean test tensorflow

[burmako]

@compnerd Let me see whether tensorflow builds correctly and passes tests. #29347 was green when we merged but maybe something got screwed up.

[burmako]

@swift-ci please clean test tensorflow

[burmako]

It looks like tensorflow passes utils/build-script --preset=tensorflow_test on my gLinux workstation. Maybe that was a spurious error that got fixed by a clean build?

upd. Ah, wait a moment, it looks like the test failures are legit now? E.g. in https://ci-external.swift.org/job/swift-PR-TensorFlow-Linux/3458/console:

FAIL: Swift(linux-x86_64) :: Python/build_swift.swift (529 of 12640)
******************** TEST 'Swift(linux-x86_64) :: Python/build_swift.swift' FAILED ********************
Script:
--
: 'RUN: at line 10';   /usr/bin/python /home/swiftci/jenkins/workspace/swift-PR-TensorFlow-Linux/swift/utils/build_swift/run_tests.py
--
Exit Code: 1

Command Output (stderr):
--
Traceback (most recent call last):
  File "/home/swiftci/jenkins/workspace/swift-PR-TensorFlow-Linux/swift/utils/build_swift/run_tests.py", line 19, in <module>
    import argparse
  File "/home/swiftci/jenkins/workspace/swift-PR-TensorFlow-Linux/swift/utils/build_swift/argparse/__init__.py", line 18, in <module>
    
ImportError: cannot import name ArgumentDefaultsHelpFormatter

--

********************

upd2. Okay, I see. SourceKit tests seem to only be failing on macOS: https://ci-external.swift.org/job/swift-PR-TensorFlow-macOS/2598/console.

[burmako]

@compnerd I've disabled failing tests in #29503 to unblock everyone's work pending a proper investigation.

[burmako]

@swift-ci please clean test tensorflow

[compnerd]

I think that this is an infrastructure issue now - please switch to python 2.

[dan-zheng]

I think that this is an infrastructure issue now - please switch to python 2.

I'm uninstalling Python 3 from the Linux CI machines. Let's see if tests pass with that change.

Linux toolchains should be built with Python 3, since that's required for swift-jupyter. However, apple/swift CI runs on different Linux machines, so uninstalling Python 3 should be fine.

[dan-zheng]

@swift-ci Please clean test tensorflow linux

[dan-zheng]

@swift-ci Please test tensorflow linux

[dan-zheng]

@swift-ci Please clean test tensorflow linux

[dan-zheng]

@swift-ci Please test tensorflow linux gpu

[dan-zheng]

@swift-ci Please test tensorflow linux gpu

[compnerd]

@dan-zheng I think that icu-devel was removed from the builder

[dan-zheng]

@dan-zheng I think that icu-devel was removed from the builder

Yes. Unfortunately, I'm currently unable to ssh to the Linux GPU CI machine - it hangs. Let's try to debug the connection internally.

[dan-zheng]

Merging now to unblock progress, ignoring the Linux GPU CI failure.

We're currently unable to connect to CI machines for some reason. Once the connection issue is fixed, we can fix Linux CPU CI robustly (by installing missing apt-get dependencies).