[Chicken-users] Adding (system->string) somewhere

[Ozzi]

Could we get something akin to (system->string) added to Chicken somewhere? 
Summary from:

http://practical-scheme.net/wiliki/schemexref.cgi?system-%3estring

"Appends all strings, then calls the result string as a command, and collects 
the output from the command into a string to be returned. See system."

I am using the following code, which just takes a single string:

(define (system->string cmd)
  (string-chomp (with-input-from-pipe cmd read-all)))

Either the library or posix units look like good candidates to me.