RE: package treating

> I presumed that, as the                   ghci  
> command loads all usable libraries, then
> 
>         ghci -package-conf myPackage.conf -package myPackage
> 
> will load   all that `ghci' loads  +
>             what is specified in  myPackage.conf.
> 
> But, probably, this is not (should not be?) so: the option
> 
>      -package-conf myPackage.conf 
> 
> fully replaces the configuration, and the package search is done 
> only according to what is specified in  
>                                        myPackage.conf
> , right?

No, packages are loaded on a demand-driven basis.  Packages must have
correct dependencies specified, so that GHC can ensure that they are
loaded in dependency order.  The -package-conf flag does not cause the
configuration to be "fully replaced".

Cheers,
        Simon