Re: 38/40: gnu: Add ocaml-spawn.

[Christopher Baines <mail@cbaines.net>]

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guix-commits@gnu.org writes:

> +    (description
> +      "Spawn is a small library exposing only one functionality: spawning sub-process.
> +
> +It has three main goals:
> +
> +@itemize
> +@item provide missing features of Unix.create_process such as providing a
> +working directory,
> +@item provide better errors when a system call fails in the
> +sub-process.  For instance if a command is not found, you get a proper
> +@code{Unix.Unix_error} exception,
> +@item improve performances by using vfork when available.  It is often
> +claimed that nowadays fork is as fast as vfork, however in practice
> +fork takes time proportional to the process memory while vfork is
> +constant time.  In application using a lot of memory, vfork can be
> +thousands of times faster than fork.")
> +    (license license:asl2.0)))

Just to let you know, I pushed a small change to the description
straight to master (as [1]) as I was having problems with guix package -s.

1: 1d5d0447d33fb50dc5ecb19ff94732ab935c6743

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