Process substitutions not supported (ERROR: Could not open /dev/fd/63.)

[karel-brinda]

attotree \
            -t 8 \
            -L <(head -n 7  ngono.list) \
            -o ngono.n7.nw
        
[attotree] 2024-04-08 16:02:51 created a temporary directory /var/folders/z6/8lsjsl3x5q94j7041rtdwqyh0000gq/T/tmphv6jy3fz
[attotree] 2024-04-08 16:02:51 Running mash
[attotree] 2024-04-08 16:02:51 Shell command: mash triangle -s 10000 -k 21 -p 8 -l /dev/fd/63
ERROR: Could not open /dev/fd/63.
[attotree] 2024-04-08 16:03:01 Unfinished, an error occurred (error code 1): mash triangle -s 10000 -k 21 -p 8 -l /dev/fd/63
attotree error: A command failed, see messages above.

[karel-brinda]

Apparently, this is caused by the inability of Python to properly pass the process substitution to the executed apps.

With just mash, it works:

mash triangle -s 10000 -k 21 -p 8 -l <(head -n 61  ngono.list)