Similar to UnixLabels.open_process, but the second argument specifies the environment passed to the command. The result is a triple of channels connected to the standard output, standard input, and standard error of the command.
| : Core_kernel.Std.out_channel | ; | ||||
| : Core_kernel.Std.in_channel | ; | ||||
| : Core_kernel.Std.in_channel | ; |