id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	os	architecture	failure	difficulty	testcase	blockedby	blocking	related
3302	Where-clause environments for GHCi	cjs		"Often in ghci I'd like to interactively debug and play with functions in the `where` clause of a top-level definition. Currently, this requires one to change the code, lifting the definitions in question to the top level and adding appropriate parameters.

Given a definition such as
{{{
top :: Int -> Int
top x = mult 4 - mult 3 + mult 2
    where
        mult n = x * n
}}}
it would be nice to type something such as `:environment top 2` to put me in an envrionment where `mult` is available and `mult 4` will evaluate to `8`. (Obviously this becomes more useful with more complex definitions.)"	feature request	closed	normal		GHCi	6.10.3	fixed			Unknown/Multiple	Unknown/Multiple		Unknown