Re: [Haskell-beginners] import not working

Let me reiterate, I'm not creating a stack project formally. I'm just going to some directory at the command prompt and firing up ghci, which I presume just uses the global installs. Then I'm creating .hs files in a text editor and trying to load them at the REPL. How can I install stuff in this instance? On Fri, Jun 4, 2021 at 10:47 PM Galaxy Being wrote:

I run ghci with

...

stack ghci

On Fri, Jun 4, 2021 at 5:19 PM Jesse Rudel wrote:

...

How are you invoking ghci? If it's a stack project you can try stack ghci if you haven't already.

On Fri, 4 Jun 2021 at 21:51, Galaxy Being wrote:

...

I go to a directory. I run

stack install Safe

I start up ghci and get the Prelude prompt. I run

import Safe

and I get

import Safe | ^^^^^^^^^^^ Failed, no modules loaded.

I'm once again frustrated. I try to load this hs file

{-# LANGUAGE ViewPatterns #-} {-# LANGUAGE NoMonomorphismRestriction #-}

import Safe

lookupDefault :: Eq a => a -> b -> [(a,b)] -> b lookupDefault k _ (lookup k -> Just s) = s lookupDefault _ d _ = d

headTup :: (a, [t]) -> [t] headTup (headMay . snd -> Just n) = [n] headTup _ = []

headNil :: [a] -> [a] headNil (headMay -> Just x) = [x] headNil _ = []

with the same result. What do I need to do? -- ⨽ Lawrence Bottorff Grand Marais, MN, USA borgauf@gmail.com _______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners

_______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners

-- ⨽ Lawrence Bottorff Grand Marais, MN, USA borgauf@gmail.com

-- ⨽ Lawrence Bottorff Grand Marais, MN, USA borgauf@gmail.com