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INSTALL.md

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Using streamly package

If you are using stack or nix please make sure to add the latest version from Hackage to your tool configuration.

Using with cabal

Make sure you have cabal version 2.4 or later installed and you have ghc available in your PATH. Refresh your package list:

$ cabal v2-update

Using hackage version in repl

# Run repl with the latest version from Hackage
$ cabal v2-repl --build-depends streamly

# Run repl with a specific version from Hackage
$ cabal v2-repl --build-depends streamly==0.6.1

Using github version in repl

Create a directory for your playground (e.g. test) and create a cabal.project file in it as follows:

packages: .
source-repository-package
  type: git
  location: https://github.com/composewell/streamly
  tag: master

Create a cabal file (e.g. test.cabal) as follows

cabal-version: 2.4
name: test
version: 0

library
  build-depends: base, streamly

Run repl:

$ cabal v2-repl

Compiling with ghc

$ cat hello.hs
import qualified Streamly.Prelude as S

main = S.runStream $ S.fromListM [putStrLn "hello", putStrLn "world"]

$ cabal v2-install streamly-0.6.1
$ ghc -package streamly-0.6.1 hello.hs

Using in a Project

Add streamly to the build-depends section of your library/executable in your <package>.cabal file. Appropriate version from Hackage will be picked depending on the version bounds that you specify. See the github version in repl section above for a sample <package>.cabal file and optionally the cabal.project file if you want to use the development version from github in your project.