You need to quote the module or distribution names. Also, you seem to be missing a -w switch :) 
ysth@raven:~$ perl -wle'sub i { print "installing: $_[0]" } i(Compress
+::Zlib)'
installing: Compress::Zlib

ysth@raven:~$ perl -wle'sub i { print "installing: $_[0]" } i(Compress
+-Zlib-1.42)'
Argument "Zlib" isn't numeric in subtraction (-) at -e line 1.
Argument "Compress" isn't numeric in subtraction (-) at -e line 1.
installing: -1.42

ysth@raven:~$ perl -wle'sub i { print "installing: $_[0]" } i(Compress
+-Zlib)'
Argument "Zlib" isn't numeric in subtraction (-) at -e line 1.
Argument "Compress" isn't numeric in subtraction (-) at -e line 1.
installing: 0

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In reply to Re: CPANPLUS with versioned Modules by ysth
in thread CPANPLUS with versioned Modules by mishikal

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