Vileserv on macOS issue

[Robert Sturrock]

Hi All.

(Long time vile user here - many thanks to all those involved in the 
development).

I’m running vile-9.8w on macOS Big Sur (11.7.1), built from source with perl 
support.  I’m able to use many of the perl extras fine, but for some reason 
Vileserv does not seem to work, even though everything appears to be in place.  
I run a ’startserv’ to start it up, at which point I can see the socket and the 
server itself running as expected:

$ lsof ~/.vilesock
COMMAND  PID USER   FD   TYPE             DEVICE SIZE/OFF NODE NAME
perl    3245  rns    3u  unix 0x9f24ff916129b7b7      0t0      
/Users/rns/.vilesock

$ ps -p 3245
  PID TTY           TIME CMD
 3245 ttys005    0:00.03 vileserv

But when I try to edit a file, ‘vileget’ just exists (with success) but no new 
buffer is opened in the running vile instance:

$ vileget fortune-cookie.txt
$ echo $?
0

But a ‘dtruss’ on the vileserv process does indicate it’s opening the file:

$ sudo dtruss -p 3245
[…]
SYSCALL(args)            = return
fcntl(0x4, 0x2, 0x1)             = 0 0
fcntl(0x4, 0x2, 0x1)             = 0 0
ioctl(0x4, 0x4004667A, 0x7FFEE87EC804)           = -1 Err#102
ioctl(0x4, 0x40487413, 0x7FFEE87EC808)           = -1 Err#102
lseek(0x4, 0x0, 0x1)             = -1 Err#29
fcntl(0x4, 0x2, 0x1)             = 0 0
ioctl(0x4, 0x4004667A, 0x7FFEE87EC804)           = -1 Err#102
ioctl(0x4, 0x40487413, 0x7FFEE87EC808)           = -1 Err#102
lseek(0x4, 0x0, 0x1)             = -1 Err#29
read(0x4, "/Users/rns/tmp/fortune-cookie.txt\n\n\0", 0x2000)             = 35 0
write(0x1, "/Users/rns/tmp/fortune-cookie.txt\n\n\n\0", 0x24)            = 36 0
close(0x4)               = 0 0

Any clues as to where the issue might be or how I might be better debug this?  
I suspect I’m missing some obvious here!

Regards,

Robert.