I come from Smalltalk where everything is accessible and modifiable. 

Is the Prelude and other base modules distributed in compiled form only? 

Hack age and hoogle are great but it is not clear which of the results is giving me are immediately available or if I have to install and import a package

Also Hoogle is a good resource, here is the link to the Prelude module.

From there you can access the functions' source.

Cheers,

Alex

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