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Unbuffered stdout for Windows and displaying the output of subprocess calls

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Yannick Jadoul
2017-08-14 14:45:55 +02:00
parent ed104d1315
commit f3e06f0a99
1 changed files with 4 additions and 1 deletions
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cibuildwheel/windows.py
+4 -1
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@@ -11,6 +11,9 @@ from .util import prepare_command
def build(project_dir, package_name, output_dir, test_command, test_requires, before_build, skip): def build(project_dir, package_name, output_dir, test_command, test_requires, before_build, skip):
# Python under AppVeyor/Windows seems to be buffering by default, giving problems interleaving subprocess call output with unflushed calls to 'print'
sys.stdout = os.fdopen(sys.stdout.fileno(), 'w', 0)
# run_with_env is a cmd file that sets the right environment variables to # run_with_env is a cmd file that sets the right environment variables to
run_with_env = os.path.join(tempfile.gettempdir(), 'appveyor_run_with_env.cmd') run_with_env = os.path.join(tempfile.gettempdir(), 'appveyor_run_with_env.cmd')
if not os.path.exists(run_with_env): if not os.path.exists(run_with_env):
@@ -22,7 +25,7 @@ def build(project_dir, package_name, output_dir, test_command, test_requires, be
# print the command executing for the logs # print the command executing for the logs
print('+ ' + ' '.join(args)) print('+ ' + ' '.join(args))
args = ['cmd', '/E:ON', '/V:ON', '/C', run_with_env] + args args = ['cmd', '/E:ON', '/V:ON', '/C', run_with_env] + args
return subprocess.check_output(' '.join(args), env=env, cwd=cwd) return subprocess.check_call(' '.join(args), env=env, cwd=cwd)
PythonConfiguration = namedtuple('PythonConfiguration', ['version', 'arch', 'identifier', 'path']) PythonConfiguration = namedtuple('PythonConfiguration', ['version', 'arch', 'identifier', 'path'])
python_configurations = [ python_configurations = [