I also find this way simple and the best to me.
Don���t really need to say to create a dir or maybe pass it as a parameter in curl.
The other way to install through that download one file is nice at first but I find it no convenient especially when doing a ���save as���... I also have recurrent problem with student on windows (through the first download link) where pharo complains it has no source file (whereas it is there).
Cheers,