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Diffstat (limited to 'doc/haskell-users-guide.md')
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diff --git a/doc/haskell-users-guide.md b/doc/haskell-users-guide.md index ce61295e5674..b981466bf2e0 100644 --- a/doc/haskell-users-guide.md +++ b/doc/haskell-users-guide.md @@ -647,6 +647,30 @@ command, i.e. by running: rm /nix/var/nix/manifests/* rm /nix/var/nix/channel-cache/* +### How to use the Haste Haskell-to-Javascript transpiler + +Open a shell with `haste-compiler` and `haste-cabal-install` (you don't actually need +`node`, but it can be useful to test stuff): + + $ nix-shell -p "haskellPackages.ghcWithPackages (self: with self; [haste-cabal-install haste-compiler])" -p nodejs + +You may not need the following step but if `haste-boot` fails to compile all the +packages it needs, this might do the trick + + $ haste-cabal update + +`haste-boot` builds a set of core libraries so that they can be used from Javascript +transpiled programs: + + $ haste-boot + +Transpile and run a "Hello world" program: + + $ echo 'module Main where main = putStrLn "Hello world"' > hello-world.hs + $ hastec --onexec hello-world.hs + $ node hello-world.js + Hello world + ### Builds on Darwin fail with `math.h` not found Users of GHC on Darwin have occasionally reported that builds fail, because the |