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Today's Topics:
1. Can't build project properly (Galaxy Being)
----------------------------------------------------------------------
Message: 1
Date: Fri, 2 Jul 2021 23:45:21 -0500
From: Galaxy Being <borg...@gmail.com>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <beginners@haskell.org>
Subject: [Haskell-beginners] Can't build project properly
Message-ID:
<cafahfsvpk83oq8tth-j77-kpe2sudx7w-s5jfc0upr5swha...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
I'm trying to do a basic stack project named http-lesson (Chapter 39 from *Get
Programming with Haskell) *which starts out with this in Main.hs
module Main where
import qualified Data.ByteString as B
import qualified Data.ByteString.Char8 as BC
import qualified Data.ByteString.Lazy as L
import qualified Data.ByteString.Lazy.Char8 as LC
import Network.HTTP.Simple
After doing stack new http-lesson, the books says to modify the
http-lesson.cabal file in the project, adding bytestring and http-conduit for
the imports noted above
executable http-lesson-exe
main-is: Main.hs
other-modules:
Paths_http_lesson
hs-source-dirs:
app
ghc-options: -threaded -rtsopts -with-rtsopts=-N
build-depends:
base >=4.7 && <5
, http-lesson
, bytestring
, http-conduit
default-language: Haskell2010
Being a beginner, I follow the cookbook-like directions, i.e., I next run stack
build . . . and it errors out, not finding the imported stuff. But then
when I check the http-lesson.cabal file, the extra packages I added
have been removed. Hunting around, I find this
<https://schooloffp.co/2020/12/05/whirlwind-tour-of-stack-for-beginners.html>
that tells me to put the extra packages in package.yaml. Very confused at
this point.
⨽
Lawrence Bottorff
Grand Marais, MN, USA
borg...@gmail.com
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