FileNotFoundError when using add command on Windows

[monkeez]

I've got Poetry installed using pipsi to keep it self contained from my system Python. I create a new project using Poetry then make a new virtualenv for it using Pew which launches a subshell in the new virtualenv. From there I run poetry add pendulum, that's when I get the error, and no packages have been installed.

Here's the output:

E:\>cd tools/code

E:\tools\code>poetry new example
Created package example in example

E:\tools\code>cd example

E:\tools\code\example>pew new example-env
Using real prefix 'C:\\Users\\mitchell\\AppData\\Local\\Programs\\Python\\Python
36-32'
New python executable in C:\Users\mitchell\.virtualenvs\example-env\Scripts\pyth
on.exe
Installing setuptools, pip, wheel...done.
Launching subshell in virtual environment. Type 'exit' to return.
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

E:\tools\code\example>poetry add pendulum
Using version ^1.4 for pendulum

Updating dependencies
Resolving dependencies.....


Package operations: 9 installs, 0 updates, 0 removals

Writing lock file

  - Installing py (1.5.2)


  [FileNotFoundError]
  [WinError 2] The system cannot find the file specified


add [-D|--dev] [--optional] [--dry-run] [--] <name> (<name>)...

[sdispater]

Thanks for reporting this!

At the moment, poetry has not been tested on Windows. This is in the works, however :-)

Could you execute the command again by passing the -v option (verbose) to get the full stacktrace? It would help a lot in debugging.

[monkeez]

Here it is with verbose mode on. I figured it might have something to do with Windows, it's usually the case with these things 😄

E:\tools\code\example>poetry add pendulum -v
Using version ^1.4 for pendulum

Updating dependencies
Resolving dependencies..........


Package operations: 9 installs, 0 updates, 0 removals

Writing lock file

  - Installing py (1.5.2)


  [FileNotFoundError]
  [WinError 2] The system cannot find the file specified


Exception trace:
 c:\users\mitchell\.local\venvs\poetry\lib\site-packages\cleo\application.py in
run() at line 95
   status_code = self.do_run(input_, output_)
 c:\users\mitchell\.local\venvs\poetry\lib\site-packages\poetry\console\applicat
ion.py in do_run() at line 60
   return super().do_run(i, o)
 c:\users\mitchell\.local\venvs\poetry\lib\site-packages\cleo\application.py in
do_run() at line 188
   status_code = command.run(input_, output_)
 c:\users\mitchell\.local\venvs\poetry\lib\site-packages\poetry\console\commands
\command.py in run() at line 24
   return super(BaseCommand, self).run(i, o)
 c:\users\mitchell\.local\venvs\poetry\lib\site-packages\cleo\commands\base_comm
and.py in run() at line 146
   status_code = self.execute(input_, output_)
 c:\users\mitchell\.local\venvs\poetry\lib\site-packages\cleo\commands\command.p
y in execute() at line 108
   return self.handle()
 c:\users\mitchell\.local\venvs\poetry\lib\site-packages\poetry\console\commands
\add.py in handle() at line 79
   status = installer.run()
 c:\users\mitchell\.local\venvs\poetry\lib\site-packages\poetry\installation\ins
taller.py in run() at line 53
   self._do_install(local_repo)
 c:\users\mitchell\.local\venvs\poetry\lib\site-packages\poetry\installation\ins
taller.py in _do_install() at line 207
   self._execute(op)
 c:\users\mitchell\.local\venvs\poetry\lib\site-packages\poetry\installation\ins
taller.py in _execute() at line 215
   getattr(self, f'_execute_{method}')(operation)
 c:\users\mitchell\.local\venvs\poetry\lib\site-packages\poetry\installation\ins
taller.py in _execute_install() at line 227
   self._installer.install(operation.package)
 c:\users\mitchell\.local\venvs\poetry\lib\site-packages\poetry\installation\pip
_installer.py in install() at line 17
   self.run(*args)
 c:\users\mitchell\.local\venvs\poetry\lib\site-packages\poetry\installation\pip
_installer.py in run() at line 30
   return self._venv.run('pip', *args)
 c:\users\mitchell\.local\venvs\poetry\lib\site-packages\poetry\utils\venv.py in
 run() at line 81
   output = subprocess.check_output(cmd, stderr=subprocess.STDOUT)
 C:\Users\mitchell\AppData\Local\Programs\Python\Python36-32\Lib\subprocess.py i
n check_output() at line 336
   **kwargs).stdout
 C:\Users\mitchell\AppData\Local\Programs\Python\Python36-32\Lib\subprocess.py i
n run() at line 403
   with Popen(*popenargs, **kwargs) as process:
 C:\Users\mitchell\AppData\Local\Programs\Python\Python36-32\Lib\subprocess.py i
n __init__() at line 709
   restore_signals, start_new_session)
 C:\Users\mitchell\AppData\Local\Programs\Python\Python36-32\Lib\subprocess.py i
n _execute_child() at line 997
   startupinfo)

add [-D|--dev] [--optional] [--dry-run] [--] <name> (<name>)...

[monkeez]

Between when I posted the original issue and now this seems to have been fixed as I'm no longer getting this error.

[github-actions]

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