[barrkel]

FWIW:

<(foo) in bash creates a fifo, and pipes the output of foo to the fifo. It then replaces the whole <(foo) argument with the path to the fifo. This means that commands that normally expect to read from a file on the command line can instead be wired to read their input from a process. And, of course, both processes run concurrently.

>(foo) does the same thing, except the other way around, for process output.

[danidiaz]

There is a "createPipe" function in the "unix" package http://hackage.haskell.org/package/unix-2.7.1.0/docs/System-... that gets us half-way towards process substitution.

Unfortunately, I don't know how to get the name of the device file associated to the pipe, and I need it in order to pass it as an argument to the reading process :(