Android/Termux doesn't have flock, see yt-dlp solution

[Leif-W]

TL;DR filelock dependency issue?

Same issue as listed on yt-dlp.

Android/Termux doesn't have flock. Fallback to lockf. Possibly fallback to no lock.

scdl -l https://soundcloud.com/user/track
Soundcloud Downloader
Found a track
Downloading track
Traceback (most recent call last):
  File "/data/data/com.termux/files/usr/lib/python3.11/site-packages/filelock/_unix.py", line 46, in _acquire
    fcntl.flock(fd, fcntl.LOCK_EX | fcntl.LOCK_NB)
OSError: [Errno 38] Function not implemented

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/data/data/com.termux/files/usr/bin/scdl", line 8, in <module>
    sys.exit(main())
             ^^^^^^
  File "/data/data/com.termux/files/usr/lib/python3.11/site-packages/scdl/scdl.py", line 304, in main
    download_url(client, **python_args)
  File "/data/data/com.termux/files/usr/lib/python3.11/site-packages/scdl/scdl.py", line 409, in download_url
    download_track(client, item, **kwargs)
  File "/data/data/com.termux/files/usr/lib/python3.11/site-packages/scdl/scdl.py", line 887, in download_track
    with lock:
  File "/data/data/com.termux/files/usr/lib/python3.11/site-packages/filelock/_api.py", line 376, in __enter__
    self.acquire()
  File "/data/data/com.termux/files/usr/lib/python3.11/site-packages/filelock/_api.py", line 332, in acquire
    self._acquire()
  File "/data/data/com.termux/files/usr/lib/python3.11/site-packages/filelock/_unix.py", line 51, in _acquire
    raise NotImplementedError(msg) from exception
NotImplementedError: FileSystem does not appear to support flock; use SoftFileLock instead

[Leif-W]

Redirecting to filelock dependency.

[Leif-W]

Actually, regardless of the filelock dependency, this problem exists, and should be addressed. Test if the system can create a file lock, catch the exception, if exception, try a soft file lock, if soft file lock fails, just don't lock. This should not be causing an error. If the filelock lib fixes this, update dependency requirement and remove code.

[7x11x13]

Possibly fixed in v2.12.1, can you see if it works on your system?

[Leif-W]

Works for me now. Much appreciated workaround. Can leave open for a bit if anyone else wants to verify.