def iter_interpreters():
for candidate in cls._find(cls._paths(paths=paths),
error_handler=Retain()):
if isinstance(candidate, cls):
yield candidate
else:
python, exception = candidate
if isinstance(exception, Job.Error):
# We spawned a subprocess to identify the interpreter but the interpreter
# could not run our identification code meaning the interpreter is either
# broken or old enough that it either can't parse our identification code
# or else provide stdlib modules we expect. The stderr should indicate the
# broken-ness appropriately.
failed_interpreters[python] = exception.stderr.strip()
else:
# We couldn't even spawn a subprocess to identify the interpreter. The
# likely OSError should help identify the underlying issue.
failed_interpreters[python] = repr(exception)
def _extract(
self,
pex, # type: PEX
options, # type: Namespace
):
# type: (...) -> Result
if not options.serve and not options.dest_dir:
return Error("Specify a --find-links directory to extract wheels to.")
dest_dir = (
os.path.abspath(os.path.expanduser(options.dest_dir))
if options.dest_dir
else safe_mkdtemp()
)
safe_mkdir(dest_dir)
if options.sources:
self._extract_sdist(pex, dest_dir)
def spawn_extract(distribution):
# type: (Distribution) -> SpawnedJob[Text]
job = spawn_python_job(
args=["-m", "wheel", "pack", "--dest-dir", dest_dir, distribution.location],
interpreter=pex.interpreter,
expose=["wheel"],
stdout=subprocess.PIPE,
)
return SpawnedJob.stdout(
job, result_func=lambda out: "{}: {}".format(distribution, out.decode())
)
with self._distributions_output(pex, options) as (distributions, output):
errors = []
for result in execute_parallel(distributions, spawn_extract, error_handler=Retain()):
if isinstance(result, tuple):
distribution, error = result
errors.append(distribution)
output.write(
"Failed to build a wheel for {distribution}: {error}\n".format(
distribution=distribution, error=error
)
)
else:
output.write(result)
if errors:
return Error(
"Failed to build wheels for {count} {distributions}.".format(
count=len(errors), distributions=pluralize(errors, "distribution")
)
)
if not options.serve:
return Ok()
repo = FindLinksRepo.serve(
interpreter=pex.interpreter, port=options.port, directory=dest_dir
)
output.write(
"Serving find-links repo of {pex} via {find_links} at http://localhost:{port}\n".format(
pex=os.path.normpath(pex.path()), find_links=dest_dir, port=repo.port
)
)
if options.pid_file:
with safe_open(options.pid_file, "w") as fp:
fp.write("{}:{}".format(repo.pid, repo.port))
try:
return Result(exit_code=repo.join(), message=" ".join(repo.cmd))
except KeyboardInterrupt:
repo.kill()
return Ok("Shut down server for find links repo at {}.".format(dest_dir))