Reflex-Dom-0.4 on Hackage

[mango314]

Have you considered posting the latest Reflex Dom on Hackage? I noticed Hackage has only version 0.3
https://hackage.haskell.org/package/reflex-dom-0.3/candidate/docs/Reflex-Dom-Widget-Basic.html

Couldn't find the type and source of element

svg :: MonadWidget t m => m ()
svg =  do
  element "svg" (def & namespace .~ Just "http://www.w3.org/2000/svg") blank
  return ()

[3noch]

Totally unrelated: @MonsieurCactus you appear to have gotten off to a good start!

[3noch]

@MonsieurCactus What are you using to get your dependencies, such as reflex-dom? Nix, Stack, and Cabal are all able to build Haddock docs for you so you don't need to rely on Hackage.

[mango314]

@3noch All I did was clone github. I do not know how to use haddock

[3noch]

@MonsieurCactus Provided you're on Linux or macOS, I'd recommend starting with https://github.com/reflex-frp/reflex-platform to build things with reflex-dom.

Once you're in a reflex shell (./try-reflex) you can run ghc-pkg field reflex-dom haddock-html to get the path to the docs for reflex-dom.

[qrilka]

Partial duplicate of #139 ?

[mango314]

@qrilka does #139 discuss Hackage?

@3noch I was able to find out using :info [1]

Prelude Reflex.Dom> :info element
class (Monad m, Reflex t, DomSpace (DomBuilderSpace m),
       MonadAdjust t m) =>
      DomBuilder t (m :: * -> *) | m -> t where
  ...
  ...
  element :: Data.Text.Internal.Text
             -> ElementConfig er t m
             -> m a
             -> m (Element er (DomBuilderSpace m) t, a)
  default element :: (Control.Monad.Trans.Control.MonadTransControl
                        f,
                      Control.Monad.Trans.Control.StT f a ~ a, m ~ f m',
                      DomBuilderSpace m' ~ DomBuilderSpace m, DomBuilder t m') =>
                     Data.Text.Internal.Text
                     -> ElementConfig er t m
                     -> m a
                     -> m (Element er (DomBuilderSpace m) t, a)
  ...
  	-- Defined in ‘Reflex.Dom.Builder.Class’

[qrilka]

@MonsieurCactus it doesn't say about it explicitly but it's just the most recent one about new reflex/reflex-dom releases (which should land on Hackage)
Just a sidenote, sorry for taking your time

[mango314]

@3noch I managed to get help with Haddock, but I get an error message in reflex-dom

src/Reflex/Dom/Xhr.hs:154:0:
     error: missing binary operator before token "("
     #if MIN_VERSION_aeson(1,0,0)
     ^

I am putting all my documentation into a folder called docs but it has stopped on Xhr.hs and refuses to continue. How can I fix this?

[katychuang]

Could it be something to do with Aeson versions? You can use ghc-pkg list | grep aeson to find the current version that you have installed.

[katychuang]

As for the original question, here's a workaround to find out the types using :t and :i in ghci

[nix-shell:~/reflex-platform]$ ghc-pkg list | grep reflex
    reflex-0.5.0
    reflex-dom-0.4
    reflex-dom-core-0.4
    reflex-todomvc-0.1
[nix-shell:~/reflex-platform]$ ghci
GHCi, version 8.0.2: http://www.haskell.org/ghc/  :? for help
Loaded GHCi configuration from /Users/kat/proj/reflex-platform/.ghci
Prelude> import Reflex.Dom
Prelude Reflex.Dom> :t element
element
  :: DomBuilder t m =>
     Data.Text.Internal.Text
     -> ElementConfig er t m
     -> m a
     -> m (Element er (DomBuilderSpace m) t, a)
Prelude Reflex.Dom> :i element
class (Monad m, Reflex t, DomSpace (DomBuilderSpace m),
       MonadAdjust t m) =>
      DomBuilder t (m :: * -> *) | m -> t where
  ...
  ...
  element :: Data.Text.Internal.Text
             -> ElementConfig er t m
             -> m a
             -> m (Element er (DomBuilderSpace m) t, a)
  default element :: (Control.Monad.Trans.Control.MonadTransControl
                        f,
                      Control.Monad.Trans.Control.StT f a ~ a, m ~ f m',
                      DomBuilderSpace m' ~ DomBuilderSpace m, DomBuilder t m') =>
                     Data.Text.Internal.Text
                     -> ElementConfig er t m
                     -> m a
                     -> m (Element er (DomBuilderSpace m) t, a)
  ...
  	-- Defined in ‘Reflex.Dom.Builder.Class’
Prelude Reflex.Dom>

[katychuang]

(oops, accidentally hit close issue 😓 )

[mango314]

@katychuang LOL

$ ghc-pkg list | grep aeson
aeson-0.11.3.0 

I don't know what is aeson. Here is the relevant section of Xhf.hs Does the if clause have some sort of typo?

import Data.Aeson
#if MIN_VERSION_aeson(1,0,0)
import Data.Aeson.Text
#else
import Data.Aeson.Encode
#endif

[katychuang]

Hmm.. no idea what version you should have. I have aeson v0.11.2.1 in my reflex platform (branch jsaddle, commit 0cebace Feb 25th).

Aeson is a library for parsing and encoding JSON. Docs. I looked up the code in src/Reflex/Dom/Xhr.hs:154:0 and saw that it was importing aeson. Found this thread on SO, which made me wonder if the version was causing an issue.

[mango314]

@katychuang StackOverflow says it's the C preprocessor -cpp

find -name '*.hs' | xargs cabal haddock --optghc=-cpp --html -o docs

http://stackoverflow.com/questions/42987302/haddock-breaks-down-on-if-else-endif-clauses

his suggestion doesn't actually work. He also mentioned my GHC version; I have 7.10.3, but maybe I should have GHC 8.0.1

@3noch all of this to say, I have attempted to generate the documentation and have been unable

[3noch]

@MonsieurCactus Unfortunately debugging on GitHub issues is really slow. Perhaps you can hop on IRC (#haskell or #reflex-frp) and ask. I have many questions but this isn't the best medium.

[mango314]

@3noch Ryan (who is here in the room with me) showed me a few things

• while I only have ghc 7.10.1, try reflex already has ghc 8.0.1 in the virtual environment

• current docs for reflex-dom 0.4 are already on my computer (in a rather obscure location). Located with ghc-pkg describe reflex-dom -- these were automatically generated with try-reflex -- and I created a symbolic link.

[3noch]

Awesome. I presume you mean Ryan Trinkle? He would most certainly know. :)

[nomeata]

Why was this closed? reflex-dom-0.4 has not yet been uploaded to Hackage…

This also need reflex-0.5 on hackage, I presume, which would be this issue: reflex-frp/reflex#177

(I know that few people use reflex dom with plain cabal, because ghcjs is hard to install manually … but for those who do it would be useful.)

[nomeata]

Until this package is in Hackage, I created a hackage overlay with this package: http://hackage-ghcjs-overlay.nomeata.de/

[nomeata]

I guess this can be closed, reflex-dom-0.4 is on Hackage: http://hackage.haskell.org/package/reflex-dom-0.4