Trying pipeliner on a Mac and the command never returns. This does n

<a class="user-mention notranslate" data-hovercard-type="user" data-hovercard-url="/us

This looks like a known issue - <a href="https://github.com/anki-code/xontrib-pipeline

Sadly these do not work as well: <div class="snippet-clipboard-content notranslate

<a class="user-mention notranslate" data-hovercard-type="user" data-hovercard-url="/us

May be this is also related to <a href="https://xon.sh/envvars.html#xonsh-capture-alwa

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Piping to ppl does not return on Mac about xontrib-pipeliner HOT 7 OPEN

anki-code commented on May 30, 2024

Piping to ppl does not return on Mac

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Comments (7)

amitkot commented on May 30, 2024 1

@anki-code Is there a "debug" flag I can run with to see why it freezes?

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anki-code commented on May 30, 2024

This looks like a known issue - https://github.com/anki-code/xontrib-pipeliner#ppl-on-macos-multicore-pipelining-freezes-on-end

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anki-code commented on May 30, 2024

You can use pl instead of ppl on mac.

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amitkot commented on May 30, 2024

Sadly these do not work as well:

> echo 1 | pl 'line'

> echo 1 | pl 'line' | cat

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amitkot commented on May 30, 2024

@anki-code I really like this idea, but this does not work for me. Any idea how to make it work?

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anki-code commented on May 30, 2024

May be this is also related to $XONSH_CAPTURE_ALWAYS.
Try to set $XONSH_CAPTURE_ALWAYS = True before usage.

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anki-code commented on May 30, 2024

@amitkot pl is a callable alias:

xontrib-pipeliner/xontrib/pipeliner/__init__.py

Lines 9 to 38 in 022071c

 def _pl(args, stdin, stdout): 

 err = False 

 if len(args) == 0: 

 print('Error: Python code not found', file=sys.stderr) 

 err = True 

 if err: 

 print('Usage: <command> | <command> | ... | pl "<Python code>"', file=sys.stderr) 

 print('Example: echo "123" | pl "line[::-1]"', file=sys.stderr) 

 return 

 fn = eval('lambda line, num:'+args[0], __xonsh__.ctx) 

 if stdin is None: 

 try: 

 print(fn(None, 0)) 

 except: 

 print_color('{YELLOW}' + str(traceback.format_exc()), file=sys.stderr) 

 return 

 num = 0 

 for line in stdin.readlines(): 

 try: 

 res = fn(line.rstrip(os.linesep), num) 

 except: 

 print_color('{YELLOW}' + f'Error line {num+1}: {line}', file=sys.stderr) 

 print_color('{YELLOW}' + str(traceback.format_exc()), file=sys.stderr) 

 return 

 num += 1 

 if res is not None: 

 print(res, file=stdout, flush=True)

So as a good start you can just debug this function on mac.

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Piping to ppl does not return on Mac about xontrib-pipeliner HOT 7 OPEN

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	def _pl(args, stdin, stdout):
	err = False
	if len(args) == 0:
	print('Error: Python code not found', file=sys.stderr)
	err = True
	if err:
	print('Usage: <command> \| <command> \| ... \| pl "<Python code>"', file=sys.stderr)
	print('Example: echo "123" \| pl "line[::-1]"', file=sys.stderr)
	return

	fn = eval('lambda line, num:'+args[0], __xonsh__.ctx)

	if stdin is None:
	try:
	print(fn(None, 0))
	except:
	print_color('{YELLOW}' + str(traceback.format_exc()), file=sys.stderr)
	return

	num = 0
	for line in stdin.readlines():
	try:
	res = fn(line.rstrip(os.linesep), num)
	except:
	print_color('{YELLOW}' + f'Error line {num+1}: {line}', file=sys.stderr)
	print_color('{YELLOW}' + str(traceback.format_exc()), file=sys.stderr)
	return
	num += 1
	if res is not None:
	print(res, file=stdout, flush=True)