wip

.travis.yml

@@ -0,0 +1,12 @@
+language: nix
+
+os:
+  - linux
+
+before_script:
+  - mkdir -m 0755 -p /nix/var/nix/{profiles,gcroots}/per-user/$USER
+  - mkdir -p ~/.config/nixpkgs
+
+script:
+  - nix-build ./release.nix --option trusted-public-keys "masser-ebook-manager.cachix.org-1:mtFSkQ2MO5MvjUpulZoFKjKUIa8g8CTcdPVuJaPKS1w= cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=" --option binary-caches "https://masser-ebook-manager.cachix.org https://cache.nixos.org" -A ghc.backend -A ghc.frontend
+  - nix-build ./release.nix --option trusted-public-keys "masser-ebook-manager.cachix.org-1:mtFSkQ2MO5MvjUpulZoFKjKUIa8g8CTcdPVuJaPKS1w= cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=" --option binary-caches "https://masser-ebook-manager.cachix.org https://cache.nixos.org" -A ghcjs.frontend

backend/backend.cabal

@@ -23,6 +23,7 @@ executable backend
                      , API.Catalogue
                      , API.Channels
                      , API.Users
+                     , Configuration
                      , Database
                      , Database.Book
                      , Database.Channel
@@ -68,6 +69,7 @@ executable backend
                      , servant
                      , servant-auth
                      , servant-auth-server
+                     , servant-auth-docs
                      , servant-docs
                      , servant-lucid
                      , servant-multipart
@@ -86,3 +88,62 @@ executable backend
                      , NoImplicitPrelude
                      , OverloadedStrings
                      , RecordWildCards
+
+test-suite spec
+  type:                exitcode-stdio-1.0
+  main-is:             Spec.hs
+  hs-source-dirs:      src
+  build-depends:       base >=4.10
+                     , exceptions
+                     , monad-control
+                     , common
+                     , aeson
+                     , asn1-data
+                     , asn1-types
+                     , bytestring
+                     , classy-prelude
+                     , cryptonite
+                     , dhall
+                     , directory
+                     , foreign-store
+                     , generic-lens
+                     , http-api-data
+                     , http-media
+                     , jose
+                     , lens
+                     , lucid
+                     , memory
+                     , monad-logger
+                     , mtl
+                     , pandoc
+                     , pandoc-types
+                     , pem
+                     , process
+                     , resource-pool
+                     , selda
+                     , selda-postgresql
+                     , servant
+                     , servant-auth
+                     , servant-auth-server
+                     , servant-docs
+                     , servant-auth-docs
+                     , servant-lucid
+                     , servant-multipart
+                     , servant-server
+                     , text
+                     , transformers
+                     , wai
+                     , warp
+                     , x509
+                     , x509-store
+                     , xml-conduit
+                     , xml-hamlet
+                     , validity
+                     , genvalidity-hspec
+                     , genvalidity-property
+                     , genvalidity-text
+                     , hspec
+  default-extensions:  DeriveGeneric
+                     , NoImplicitPrelude
+                     , OverloadedStrings
+                     , RecordWildCards

backend/src/API.hs

@@ -1,40 +1,38 @@
-{-# Language DataKinds #-}
-{-# Language TypeFamilies #-}
-{-# Language TypeOperators #-}
-{-# Language NoImplicitPrelude #-}
-{-# Language MultiParamTypeClasses #-}
-{-# Language OverloadedStrings #-}
-{-# Language TemplateHaskell #-}
-{-# Language QuasiQuotes #-}
-{-# Language RecordWildCards #-}
-{-# Language DeriveGeneric #-}
-{-# Language FlexibleInstances #-}
+{-# LANGUAGE DataKinds             #-}
+{-# LANGUAGE DeriveGeneric         #-}
+{-# LANGUAGE FlexibleInstances     #-}
+{-# LANGUAGE MultiParamTypeClasses #-}
+{-# LANGUAGE NoImplicitPrelude     #-}
+{-# LANGUAGE OverloadedStrings     #-}
+{-# LANGUAGE QuasiQuotes           #-}
+{-# LANGUAGE RecordWildCards       #-}
+{-# LANGUAGE TemplateHaskell       #-}
+{-# LANGUAGE TypeFamilies          #-}
+{-# LANGUAGE TypeOperators         #-}
 module API (API, handler) where
 
 
-import Servant
-import Servant.HTML.Lucid (HTML)
-import Types
+import           Servant
+import           Servant.HTML.Lucid (HTML)
+import           Types
 
-import View
+import           View
 
-import qualified API.Users as Users
-import qualified API.Channels as Channels
-import qualified API.Books as Books
-import qualified API.Catalogue as Catalogue
+import qualified API.Books          as Books
+import qualified API.Catalogue      as Catalogue
+import qualified API.Channels       as Channels
+import qualified API.Users          as Users
 
 data Index = Index
 
-type API = Get '[HTML] (AppView Index)
-      :<|> Users.API
+type API = Users.API
       :<|> "api" :> "current" :> Channels.API
       :<|> "api" :> "current" :> Books.API
       :<|> "api" :> "1" :> Catalogue.VersionedAPI 1
       :<|> "api" :> "current" :> Catalogue.VersionedAPI 1
 
 handler :: ServerT API AppM
-handler = indexHandler
-    :<|> Users.handler
+handler = Users.handler
     :<|> Channels.handler
     :<|> Books.handler
     :<|> Catalogue.handler

backend/src/API/Books.hs

@@ -1,54 +1,59 @@
-{-# Language DuplicateRecordFields #-}
-{-# Language DataKinds #-}
-{-# Language TypeFamilies #-}
-{-# Language TypeOperators #-}
-{-# Language NoImplicitPrelude #-}
-{-# Language MultiParamTypeClasses #-}
-{-# Language OverloadedStrings #-}
-{-# Language TemplateHaskell #-}
-{-# Language QuasiQuotes #-}
-{-# Language RecordWildCards #-}
-{-# Language DeriveGeneric #-}
-{-# Language FlexibleInstances #-}
-{-# Language TypeApplications #-}
-{-# Language DataKinds #-}
-{-# Language NamedFieldPuns #-}
+{-# LANGUAGE DataKinds                  #-}
+{-# LANGUAGE DeriveGeneric              #-}
+{-# LANGUAGE DuplicateRecordFields      #-}
+{-# LANGUAGE FlexibleInstances          #-}
+{-# LANGUAGE GeneralizedNewtypeDeriving #-}
+{-# LANGUAGE MultiParamTypeClasses      #-}
+{-# LANGUAGE NamedFieldPuns             #-}
+{-# LANGUAGE NoImplicitPrelude          #-}
+{-# LANGUAGE OverloadedStrings          #-}
+{-# LANGUAGE QuasiQuotes                #-}
+{-# LANGUAGE RecordWildCards            #-}
+{-# LANGUAGE TemplateHaskell            #-}
+{-# LANGUAGE TypeApplications           #-}
+{-# LANGUAGE TypeFamilies               #-}
+{-# LANGUAGE TypeOperators              #-}
 module API.Books where
 
 import           ClassyPrelude
 import           Control.Lens
-import           Control.Monad.Catch (throwM, MonadThrow)
+import           Control.Monad.Catch       (MonadThrow, throwM)
+import           Control.Monad.Trans.Maybe
+import           Crypto.Hash               (digestFromByteString)
 import           Data.Aeson
+import           Data.ByteArray            (convert)
 import           Data.Generics.Product
 import           Database
 import           Database.Book
 import           Database.Channel
 import           Database.Tag
-import           Servant hiding (contentType)
-import           Servant.Auth as SA
+import qualified Datastore                 as DS
+import           Servant                   hiding (contentType)
+import           Servant.Auth              as SA
+import qualified Servant.Docs              as Docs
 import           Server.Auth
 import           Types
 
-import           Control.Monad.Trans.Maybe
-
-import qualified Datastore as DS
-import           Data.ByteArray (convert)
-import           Crypto.Hash (digestFromByteString)
-
-data JsonBook = JsonBook { identifier :: BookID
+data JsonBook = JsonBook { identifier  :: BookID
                          , contentType :: Text
-                         , title :: Text
+                         , title       :: Text
                          , description :: Maybe Text
-                         , channels :: [Text]
-                         , tags :: [Text] }
-              deriving (Generic, Show)
+                         , channels    :: [Text]
+                         , tags        :: [Text] }
+              deriving (Generic, Show, Eq)
+
+instance Docs.ToSample JsonBook where
+  toSamples _ = [("Book", JsonBook 13 "epub" "title" (Just "Description") [] [])]
+
+instance Docs.ToSample PostBook where
+  toSamples _ = [("Book", PostBook "epub" "title" (Just "Description") [] [])]
 
 data PostBook = PostBook { contentType :: Text
-                         , title :: Text
+                         , title       :: Text
                          , description :: Maybe Text
-                         , channels :: [Text]
-                         , tags :: [Text] }
-              deriving (Generic, Show)
+                         , channels    :: [Text]
+                         , tags        :: [Text] }
+              deriving (Generic, Show, Eq)
 
 
 instance ToJSON JsonBook
@@ -58,13 +63,21 @@ instance FromJSON PostBook
 
 type API = Auth '[SA.BasicAuth, SA.JWT] SafeUser :> BaseAPI
 
+instance Docs.ToCapture (Capture "book_id" BookID) where
+  toCapture _ = Docs.DocCapture "book_id" "The book id"
+
 type BaseAPI = "books" :> Get '[JSON] [JsonBook]
        :<|> "books" :> ReqBody '[JSON] PostBook :> Post '[JSON] JsonBook
        :<|> "books" :> Capture "book_id" BookID :> "meta" :> ReqBody '[JSON] JsonBook :> Put '[JSON] JsonBook
-       :<|> "books" :> Capture "book_id" BookID :> ReqBody '[OctetStream] ByteString :> Put '[JSON] NoContent
+       :<|> "books" :> Capture "book_id" BookID :> ReqBody '[OctetStream] FileContent :> Put '[JSON] NoContent
        :<|> GetBook
 
-type GetBook = "books" :> Capture "book_id" BookID :> Get '[OctetStream] ByteString
+newtype FileContent = FileContent { getFileContent :: ByteString } deriving (MimeUnrender OctetStream, MimeRender OctetStream )
+
+instance Docs.ToSample FileContent where
+  toSamples _ = [("File contents", FileContent "bytes here and there")]
+
+type GetBook = "books" :> Capture "book_id" BookID :> Get '[OctetStream] FileContent
 
 handler :: ServerT API AppM
 handler user = listBooksHandler user
@@ -73,12 +86,12 @@ handler user = listBooksHandler user
           :<|> putBookContentHandler user
           :<|> getBookContentHandler user
 
-getBookContentHandler :: AuthResult SafeUser -> BookID -> AppM ByteString
+getBookContentHandler :: AuthResult SafeUser -> BookID -> AppM FileContent
 getBookContentHandler auth bookId = requireBookOwner auth bookId $ \SafeUser{username} -> do
   content <- runMaybeT $ do
     Book{contentHash=mHash} <- MaybeT $ runDB (getBook bookId username)
     contentHash <- MaybeT $ return (mHash >>= digestFromByteString . unHex)
-    MaybeT $ DS.get contentHash
+    FileContent <$> MaybeT (DS.get contentHash)
   maybe (throwM err404) return content
 
 requireBookOwner :: AuthResult SafeUser -> BookID -> (SafeUser -> AppM a) -> AppM a
@@ -87,8 +100,9 @@ requireBookOwner auth bookId f = flip requireLoggedIn auth $ \u@SafeUser{usernam
   unless exists $ throwM err404
   runDB (isBookOwner bookId username) >>= \o -> if o then f u else throwM err403
 
-putBookContentHandler :: AuthResult SafeUser -> BookID -> ByteString -> AppM NoContent
-putBookContentHandler auth bookId content = requireBookOwner auth bookId $ \SafeUser{username} -> do
+putBookContentHandler :: AuthResult SafeUser -> BookID -> FileContent -> AppM NoContent
+putBookContentHandler auth bookId fc = requireBookOwner auth bookId $ \SafeUser{username} -> do
+  let content = getFileContent fc
   key <- HashDigest . convert <$> DS.put content
   runDB (setContent bookId username key)
   return NoContent

backend/src/API/Catalogue.hs

@@ -24,8 +24,10 @@ import qualified Database.Channel as Channel
 import           GHC.TypeLits
 import           Servant hiding (contentType)
 import           Servant.Auth as SA
+import qualified Servant.Docs as Docs
 import           Servant.XML
 import           Server.Auth
+import           System.IO.Unsafe (unsafePerformIO)
 import           Types
 
 -- This is my first try on going to versioned apis, things might change
@@ -40,7 +42,7 @@ newtype Rel = Rel { unRel :: Text } deriving (IsString, Show)
 
 data Pagination = Pagination { previous :: Maybe Rel
                              , next :: Maybe Rel }
-                deriving (Show)
+                deriving (Show, Generic)
 
 newtype SubSection = SubSection Rel deriving (Show)
 newtype Acquisition = Acquisition Rel deriving (Show)
@@ -64,6 +66,20 @@ deriving instance Show (Entry 1)
 deriving instance Generic (Catalog 1)
 deriving instance Generic (Entry 1)
 
+instance Docs.ToSample (Entry 1) where
+  toSamples _ = [("Entry", EntryV1 "title" "identifier" docsTime "content" (Left (SubSection (Rel "sub"))))]
+instance Docs.ToSample UTCTime where
+  toSamples _ = [("time", docsTime)]
+instance Docs.ToSample Rel where
+  toSamples _ = [("Relative link", Rel "next")]
+instance Docs.ToSample Pagination
+instance Docs.ToSample (Catalog 1) -- where
+  -- toSamples _ = [("catalog", CatalogV1 docsTime (Rel "prev") (Rel "next") (Pagination (Just "previous") (Just "next")) [])]
+
+docsTime :: UTCTime
+docsTime = unsafePerformIO getCurrentTime
+  
+
 instance ToNode SubSection where
   toNode (SubSection rel) = [xml|<link type="application/atom+xml;profile=opds-catalog;kind=acquisition" rel="subsection" href="#{unRel rel}">|]
 

backend/src/API/Channels.hs

@@ -1,41 +1,47 @@
-{-# Language DataKinds #-}
-{-# Language TypeFamilies #-}
-{-# Language TypeOperators #-}
-{-# Language NoImplicitPrelude #-}
-{-# Language MultiParamTypeClasses #-}
-{-# Language OverloadedStrings #-}
-{-# Language TemplateHaskell #-}
-{-# Language QuasiQuotes #-}
-{-# Language RecordWildCards #-}
-{-# Language DeriveGeneric #-}
-{-# Language FlexibleInstances #-}
-{-# Language TypeApplications #-}
-{-# Language DataKinds #-}
-{-# Language DuplicateRecordFields #-}
-{-# Language NamedFieldPuns #-}
+{-# LANGUAGE DataKinds             #-}
+{-# LANGUAGE DeriveGeneric         #-}
+{-# LANGUAGE DuplicateRecordFields #-}
+{-# LANGUAGE FlexibleInstances     #-}
+{-# LANGUAGE MultiParamTypeClasses #-}
+{-# LANGUAGE NamedFieldPuns        #-}
+{-# LANGUAGE NoImplicitPrelude     #-}
+{-# LANGUAGE OverloadedStrings     #-}
+{-# LANGUAGE QuasiQuotes           #-}
+{-# LANGUAGE RecordWildCards       #-}
+{-# LANGUAGE TemplateHaskell       #-}
+{-# LANGUAGE TypeApplications      #-}
+{-# LANGUAGE TypeFamilies          #-}
+{-# LANGUAGE TypeOperators         #-}
 module API.Channels (API, handler, JsonChannel(..)) where
 
-import ClassyPrelude
-import Control.Lens
-import Control.Monad.Catch (throwM, MonadThrow)
-import Control.Monad.Logger
-import Data.Aeson
-import Data.Generics.Product
-import Database
-import Database.Channel
-import Servant
-import Servant.Auth as SA
-import Server.Auth
-import Types
+import           ClassyPrelude
+import           Control.Lens
+import           Control.Monad.Catch   (MonadThrow, throwM)
+import           Control.Monad.Logger
+import           Data.Aeson
+import           Data.Generics.Product
+import           Database
+import           Database.Channel
+import           Servant
+import           Servant.Auth          as SA
+import qualified Servant.Docs          as Docs
+import           Server.Auth
+import           Types
 
-data JsonChannel = JsonChannel { channel :: Text
+data JsonChannel = JsonChannel { channel    :: Text
                                , visibility :: Visibility }
                  deriving (Show, Generic)
 data UpdateChannel = UpdateChannel { identifier :: ChannelID
-                                   , channel :: Text
+                                   , channel    :: Text
                                    , visibility :: Visibility }
                  deriving (Show, Generic)
 
+instance Docs.ToSample JsonChannel where
+  toSamples _ = [("Channel", JsonChannel "channel" Private)]
+
+instance Docs.ToSample UpdateChannel where
+  toSamples _ = [("Channel", UpdateChannel 13 "channel" Private)]
+
 instance ToJSON JsonChannel
 instance FromJSON JsonChannel
 instance ToJSON UpdateChannel
@@ -43,6 +49,9 @@ instance FromJSON UpdateChannel
 
 type API = Auth '[SA.BasicAuth, SA.Cookie, SA.JWT] SafeUser :> BaseAPI
 
+instance Docs.ToCapture (Capture "channel_id" ChannelID) where
+  toCapture _ = Docs.DocCapture "channel_id" "The channel id"
+
 type BaseAPI = "channels" :> ReqBody '[JSON] JsonChannel :> Post '[JSON] UpdateChannel
           :<|> "channels" :> Capture "channel_id" ChannelID :> ReqBody '[JSON] UpdateChannel :> Put '[JSON] UpdateChannel
           :<|> "channels" :> Get '[JSON] [JsonChannel]

backend/src/API/Users.hs

@@ -7,18 +7,19 @@
 {-# Language TypeApplications #-}
 module API.Users  where
 
-import ClassyPrelude
-import Control.Monad.Catch (throwM, MonadThrow)
-import Data.Aeson
-import Database (runDB)
-import Database.Schema
-import Database.User
-import Servant
-import Servant.Auth as SA
-import Servant.Auth.Server as SAS
-import Server.Auth
-import Types
-import Web.FormUrlEncoded
+import           ClassyPrelude
+import           Control.Monad.Catch (throwM, MonadThrow)
+import           Data.Aeson
+import           Database (runDB)
+import           Database.Schema
+import           Database.User
+import           Servant
+import           Servant.Auth as SA
+import           Servant.Auth.Server as SAS
+import qualified Servant.Docs as Docs
+import           Server.Auth
+import           Types
+import           Web.FormUrlEncoded
 
 
 data RegisterForm = RegisterForm { username :: Username
@@ -27,12 +28,17 @@ data RegisterForm = RegisterForm { username :: Username
                                  , passwordAgain :: PlainPassword }
                   deriving (Generic, Show)
 
+instance Docs.ToSample RegisterForm
+
 data LoginStatus = LoginStatus ( Maybe SafeUser ) deriving Generic
 
 data RegisterStatus = RegisterStatus deriving Generic
 
+instance Docs.ToSample RegisterStatus
+
 instance ToJSON LoginStatus
 instance FromJSON LoginStatus
+instance Docs.ToSample LoginStatus
 
 instance FromJSON RegisterForm
 instance ToJSON RegisterForm

backend/src/Configuration.hs

@@ -23,3 +23,4 @@ data Config = Config { database :: Pg
 instance Interpret Pg
 instance Interpret Store
 instance Interpret Config
+

backend/src/Database/Schema.hs

@@ -1,83 +1,92 @@
-{-# Language NoImplicitPrelude #-}
-{-# Language DeriveGeneric #-}
-{-# Language OverloadedStrings #-}
-{-# Language DuplicateRecordFields #-}
-{-# Language GeneralizedNewtypeDeriving #-}
+{-# LANGUAGE DeriveGeneric              #-}
+{-# LANGUAGE DuplicateRecordFields      #-}
+{-# LANGUAGE GeneralizedNewtypeDeriving #-}
+{-# LANGUAGE NoImplicitPrelude          #-}
+{-# LANGUAGE OverloadedStrings          #-}
 module Database.Schema where
 
-import ClassyPrelude
-import Database.Selda.Generic
-import Database.Selda
-import Database.Selda.Backend
-
-import Data.Aeson
-import Web.HttpApiData
+import           ClassyPrelude
+import           Data.Aeson
+import           Database.Selda
+import           Database.Selda.Backend
+import           Database.Selda.Generic
+import qualified Servant.Docs           as Docs
+import           Web.HttpApiData
 
 -- | User type
-newtype PlainPassword = PlainPassword Text deriving (Show, ToJSON, FromJSON, ToHttpApiData, FromHttpApiData, Eq)
+newtype PlainPassword = PlainPassword Text deriving (Show, ToJSON, FromJSON, ToHttpApiData, FromHttpApiData, Eq, Generic)
 newtype HashedPassword = HashedPassword {unHashed :: ByteString}
 data NoPassword = NoPassword
 
-newtype Email = Email { unEmail :: Text } deriving (Show, ToJSON, FromJSON, ToHttpApiData, FromHttpApiData)
+newtype Email = Email { unEmail :: Text } deriving (Show, ToJSON, FromJSON, ToHttpApiData, FromHttpApiData, Generic, Eq, IsString)
 
-newtype Username = Username { unUsername :: Text } deriving (Show, ToJSON, FromJSON, ToHttpApiData, FromHttpApiData)
+newtype Username = Username { unUsername :: Text } deriving (Show, ToJSON, FromJSON, ToHttpApiData, FromHttpApiData, Eq, Generic, IsString)
+
+instance Docs.ToSample Username where
+  toSamples _ = [("Username", Username "user123")]
+
+instance Docs.ToSample Email where
+  toSamples _ = [("Email", Email "first.last@example.com")]
+
+instance Docs.ToSample PlainPassword where
+  toSamples _ = [("Password", PlainPassword "password123")]
 
 instance SqlType HashedPassword where
   mkLit = LCustom . LBlob . unHashed
   fromSql (SqlBlob x) = HashedPassword x
-  fromSql _ = error "fromSql: Bad hash"
+  fromSql _           = error "fromSql: Bad hash"
   defaultValue = mkLit (HashedPassword "") -- Makes no sense
 
 instance SqlType Email where
   mkLit = LCustom . LText . unEmail
   fromSql (SqlString x) = Email x
-  fromSql _ = error "fromSql: Bad email"
+  fromSql _             = error "fromSql: Bad email"
   defaultValue = mkLit (Email "")
 
 instance SqlType Username where
   mkLit = LCustom . LText . unUsername
   fromSql (SqlString x) = Username x
-  fromSql _ = error "fromSql: Bad username"
+  fromSql _             = error "fromSql: Bad username"
   defaultValue = mkLit (Username "")
 
 newtype UserID = UserID {unUserID :: Int} deriving (Show)
 
-newtype BookID = BookID {unBookID :: Int} deriving (Show, ToJSON, FromJSON, FromHttpApiData, Eq, Ord, ToHttpApiData)
+newtype BookID = BookID {unBookID :: Int} deriving (Show, ToJSON, FromJSON, FromHttpApiData, Eq, Ord, ToHttpApiData, Generic, Num)
 
-newtype ChannelID = ChannelID {unChannelID :: Int} deriving (Show, ToHttpApiData, FromHttpApiData, ToJSON, FromJSON)
+newtype ChannelID = ChannelID {unChannelID :: Int} deriving (Show, ToHttpApiData, FromHttpApiData, ToJSON, FromJSON, Eq, Generic, Num)
 
 newtype TagID = TagID {unTagID :: Int} deriving (Show)
 
 instance SqlType UserID where
   mkLit = LCustom . LInt . unUserID
   fromSql (SqlInt x) = UserID x
-  fromSql _ = error "fromSql: Bad userid"
+  fromSql _          = error "fromSql: Bad userid"
   sqlType _ = TRowID
   defaultValue = mkLit (UserID (-1))
 instance SqlType BookID where
   mkLit = LCustom . LInt . unBookID
   fromSql (SqlInt x) = BookID x
-  fromSql _ = error "fromSql: Bad bookid"
+  fromSql _          = error "fromSql: Bad bookid"
   defaultValue = mkLit (BookID (-1))
 instance SqlType ChannelID where
   mkLit = LCustom . LInt . unChannelID
   fromSql (SqlInt x) = ChannelID x
-  fromSql _ = error "fromSql: Bad channelid"
+  fromSql _          = error "fromSql: Bad channelid"
   defaultValue = mkLit (ChannelID (-1))
 instance SqlType TagID where
   mkLit = LCustom . LInt . unTagID
   fromSql (SqlInt x) = TagID x
-  fromSql _ = error "fromSql: Bad tagid"
+  fromSql _          = error "fromSql: Bad tagid"
   defaultValue = mkLit (TagID (-1))
 
 data User pass = User { identifier :: UserID
-                      , email :: Email
-                      , username :: Username
-                      , role :: Role
-                      , password :: pass }
+                      , email      :: Email
+                      , username   :: Username
+                      , role       :: Role
+                      , password   :: pass }
           deriving (Show, Generic)
 
-data Role = UserRole | AdminRole deriving (Show, Read, Enum, Bounded, Typeable, Generic)
+data Role = UserRole | AdminRole deriving (Show, Read, Enum, Bounded, Typeable, Generic, Eq)
 
 instance ToJSON Role
 instance FromJSON Role
@@ -98,18 +107,18 @@ users = genTable "users" [ (email :: User HashedPassword -> Email) :- uniqueGen
 -- | Book type
 newtype HashDigest = HashDigest { unHex :: ByteString } deriving Show
 -- XXX: Add an identifier for the book
-data Book = Book { identifier :: BookID
+data Book = Book { identifier  :: BookID
                  , contentHash :: Maybe HashDigest
                  , contentType :: Text
-                 , title :: Text
+                 , title       :: Text
                  , description :: Maybe Text
-                 , owner :: UserID }
+                 , owner       :: UserID }
           deriving (Show, Generic)
 
 instance SqlType HashDigest where
   mkLit = LCustom . LBlob . unHex
   fromSql (SqlBlob x) = HashDigest x
-  fromSql _ = error "fromSql: Not a valid hash digest"
+  fromSql _           = error "fromSql: Not a valid hash digest"
   defaultValue = mkLit (HashDigest "") -- Doesn't really make sense
 
 books :: GenTable Book
@@ -120,12 +129,12 @@ books = genTable "books" [ (identifier :: Book -> BookID) :- autoPrimaryGen
 
 -- | Categorizing books
 data Tag = Tag { identifier :: TagID
-               , tag :: Text
-               , owner :: UserID }
+               , tag        :: Text
+               , owner      :: UserID }
          deriving (Show, Generic)
 
 data Visibility = Public | Private | Followers
-                deriving (Show, Read, Generic)
+                deriving (Show, Read, Generic, Eq)
 
 instance ToJSON Visibility
 instance FromJSON Visibility
@@ -137,8 +146,8 @@ instance SqlType Visibility where
   defaultValue = mkLit Private
 
 data Channel = Channel { identifier :: ChannelID
-                       , channel :: Text
-                       , owner :: UserID
+                       , channel    :: Text
+                       , owner      :: UserID
                        , visibility :: Visibility }
              deriving (Show, Generic)
 
@@ -154,12 +163,12 @@ channels = genTable "channels" [ (identifier :: Channel -> ChannelID) :- autoPri
   where
     i :*: _ = selectors (gen users)
 
-data BookTag = BookTag { tag :: TagID
+data BookTag = BookTag { tag  :: TagID
                        , book :: BookID }
              deriving (Show, Generic)
 
 data BookChannel = BookChannel { channel :: ChannelID
-                               , book :: BookID }
+                               , book    :: BookID }
                  deriving (Show, Generic)
 
 bookTags :: GenTable BookTag

backend/src/Server.hs

@@ -1,37 +1,45 @@
-{-# Language DataKinds #-}
-{-# Language TypeFamilies #-}
-{-# Language TypeOperators #-}
-{-# Language NoImplicitPrelude #-}
-{-# Language MultiParamTypeClasses #-}
-{-# Language OverloadedStrings #-}
-{-# Language TemplateHaskell #-}
-{-# Language QuasiQuotes #-}
-{-# Language RecordWildCards #-}
-{-# Language DeriveGeneric #-}
-{-# Language FlexibleInstances #-}
-{-# Language TypeApplications #-}
-{-# Language ScopedTypeVariables #-}
+{-# LANGUAGE DataKinds             #-}
+{-# LANGUAGE DeriveGeneric         #-}
+{-# LANGUAGE FlexibleInstances     #-}
+{-# LANGUAGE MultiParamTypeClasses #-}
+{-# LANGUAGE NoImplicitPrelude     #-}
+{-# LANGUAGE OverloadedStrings     #-}
+{-# LANGUAGE QuasiQuotes           #-}
+{-# LANGUAGE RecordWildCards       #-}
+{-# LANGUAGE ScopedTypeVariables   #-}
+{-# LANGUAGE TemplateHaskell       #-}
+{-# LANGUAGE TypeApplications      #-}
+{-# LANGUAGE TypeFamilies          #-}
+{-# LANGUAGE TypeOperators         #-}
 module Server where
 
-import qualified API as API
-import Server.Auth (authCheck)
-import Servant
-import Types
-import ClassyPrelude hiding (Handler)
-import Control.Monad.Logger
-import Control.Monad.Except
-import Servant.Auth.Server as SAS
-import Control.Lens
-import Data.Generics.Product
-import Server.Auth (SafeUser)
+import qualified API                   as API
+import           ClassyPrelude         hiding (Handler)
+import           Control.Lens
+import           Control.Monad.Except
+import           Control.Monad.Logger
+import           Data.Generics.Product
+import           Servant
+import           Servant.Auth.Docs     ()
+import           Servant.Auth.Server   as SAS
+import qualified Servant.Docs          as Docs
+import           Servant.HTML.Lucid    (HTML)
+import           Server.Auth           (SafeUser)
+import           Server.Auth           (authCheck)
+import           Types
 
-type API = API.API :<|> "static" :> Raw
+type API = API.API
+  :<|> "help" :> Get '[PlainText, HTML] String
+  :<|> "static" :> Raw
 
 type Ctx = '[BasicAuthData -> IO (AuthResult SafeUser), CookieSettings, JWTSettings]
 
 server :: App -> Application
-server app = serveWithContext api cfg (hoistServerWithContext (Proxy @ API.API) (Proxy @ Ctx) server' API.handler :<|> serveDirectoryFileServer "static")
+server app = serveWithContext api cfg (hoistServerWithContext (Proxy @ API.API) (Proxy @ Ctx) server' API.handler :<|> serveDocs :<|> serveDirectoryFileServer "static")
   where
+    apiDocs :: Docs.API
+    apiDocs = Docs.docs (Proxy @API.API)
+    serveDocs = pure $ Docs.markdown apiDocs
     myKey = view (field @"jwk") app
     jwtCfg = defaultJWTSettings myKey
     authCfg = authCheck app

backend/src/Server/Auth.hs

@@ -1,11 +1,11 @@
-{-# Language DataKinds #-}
-{-# Language TypeFamilies #-}
-{-# Language OverloadedStrings #-}
-{-# Language NoImplicitPrelude #-}
-{-# Language TypeOperators #-}
-{-# Language DuplicateRecordFields #-}
-{-# Language TypeApplications #-}
-{-# Language TemplateHaskell #-}
+{-# LANGUAGE DataKinds             #-}
+{-# LANGUAGE DuplicateRecordFields #-}
+{-# LANGUAGE NoImplicitPrelude     #-}
+{-# LANGUAGE OverloadedStrings     #-}
+{-# LANGUAGE TemplateHaskell       #-}
+{-# LANGUAGE TypeApplications      #-}
+{-# LANGUAGE TypeFamilies          #-}
+{-# LANGUAGE TypeOperators         #-}
 module Server.Auth
   ( SafeUser(..)
   , authCheck
@@ -13,29 +13,33 @@ module Server.Auth
   , requireLoggedIn)
   where
 
-import ClassyPrelude
-import Control.Lens (view)
-import Control.Monad.Logger
-import Control.Monad.Catch (throwM, MonadThrow)
-import Data.Aeson
-import Data.Generics.Product
-import Database
-import Database.Schema
-import Database.User
-import Servant (err401)
-import Servant.Auth.Server as SAS
-import Types
+import           ClassyPrelude
+import           Control.Lens          (view)
+import           Control.Monad.Catch   (MonadThrow, throwM)
+import           Control.Monad.Logger
+import           Data.Aeson
+import           Data.Generics.Product
+import           Database
+import           Database.Schema
+import           Database.User
+import           Servant               (err401)
+import           Servant.Auth.Server   as SAS
+import qualified Servant.Docs          as Docs
+import           Types
 
 -- generic-lens can convert similar types to this
 -- I'm trying out servant-auth-server which uses a jwt style login. IIRC anyone
 -- can open the jwt token and view what's inside, you just can't modify it.
 --
 -- Is it a problem that a human readable username and email are visible?
-data SafeUser = SafeUser { email :: Email
+data SafeUser = SafeUser { email    :: Email
                          , username :: Username
-                         , role :: Role }
+                         , role     :: Role }
               deriving (Show, Generic)
 
+instance Docs.ToSample SafeUser where
+  toSamples _ = [("User", SafeUser "user@example.com" "user" UserRole )]
+
 instance ToJSON SafeUser where
 instance FromJSON SafeUser where
 instance ToJWT SafeUser where

backend/src/Spec.hs

@@ -0,0 +1,65 @@
+{-# Language TypeApplications #-}
+module Main where
+
+import           API.Books
+import qualified Data.Aeson as A
+import           Data.Char (isPrint)
+import           Data.GenValidity.Text ()
+import qualified Data.Text as T
+import           Database.Schema
+import           Prelude
+import           Test.Hspec
+import           Test.Validity
+
+instance GenUnchecked PlainPassword
+instance GenValid PlainPassword
+instance GenInvalid PlainPassword
+instance Validity PlainPassword
+instance GenUnchecked Email
+instance GenValid Email
+instance GenInvalid Email
+instance Validity Email
+instance GenUnchecked Username
+instance GenValid Username
+instance GenInvalid Username
+instance Validity Username
+instance GenUnchecked BookID
+instance GenValid BookID
+instance GenInvalid BookID
+instance Validity BookID
+instance GenUnchecked ChannelID
+instance GenValid ChannelID
+instance GenInvalid ChannelID
+instance Validity ChannelID
+instance GenUnchecked Role
+instance GenValid Role
+instance GenInvalid Role
+instance Validity Role
+instance GenUnchecked Visibility
+instance GenValid Visibility
+instance GenInvalid Visibility
+instance Validity Visibility
+instance GenUnchecked JsonBook
+instance GenValid JsonBook
+instance GenInvalid JsonBook
+instance Validity JsonBook
+instance GenUnchecked PostBook
+instance GenValid PostBook
+instance GenInvalid PostBook
+instance Validity PostBook
+
+spec :: Spec
+spec = do
+  describe "JSON encoding" $ do
+    it "Works for PlainPassword" $ inverseFunctionsIfSecondSucceedsOnValid (A.encode @PlainPassword) A.decode
+    it "Works for Email" $ inverseFunctionsIfSecondSucceedsOnValid (A.encode @Email) A.decode
+    it "Username" $ inverseFunctionsIfSecondSucceedsOnValid (A.encode @Username) A.decode
+    it "Works for BookID" $ inverseFunctionsIfSecondSucceedsOnValid (A.encode @BookID) A.decode
+    it "Works for ChannelID" $ inverseFunctionsIfSecondSucceedsOnValid (A.encode @ChannelID) A.decode
+    it "Works for Role" $ inverseFunctionsIfSecondSucceedsOnValid (A.encode @Role) A.decode
+    it "Works for Visibility" $ inverseFunctionsIfSecondSucceedsOnValid (A.encode @Visibility) A.decode
+    it "Works for JsonBook" $ inverseFunctionsIfSecondSucceedsOnValid (A.encode @JsonBook) A.decode
+    it "Works for PostBook" $ inverseFunctionsIfSecondSucceedsOnValid (A.encode @PostBook) A.decode
+
+main :: IO ()
+main = hspec spec

common/common.cabal

@@ -13,13 +13,10 @@ extra-source-files:  ChangeLog.md
 cabal-version:       >=1.10
 
 library
-  exposed-modules:     Configuration
-                     , Data.Versioned
+  exposed-modules:     Data.Versioned
   -- other-extensions:
   build-depends:       base >=4.10
                      , classy-prelude
-                     , dhall
-                     , foreign-store
                      , generic-lens
                      , lens
                      , mtl
@@ -31,3 +28,20 @@ library
                      , OverloadedStrings
                      , RecordWildCards
   default-language:    Haskell2010
+
+-- test-suite spec
+--   type:                exitcode-stdio-1.0
+--   main-is:             Spec.hs
+--   hs-source-dirs:      src
+--   build-depends:       base >=4.10
+--                      , classy-prelude
+--                      , foreign-store
+--                      , generic-lens
+--                      , lens
+--                      , mtl
+--                      , text
+--                      , transformers
+--                      , validity
+--                      , genvalidity-hspec
+--                      , genvalidity-property
+--                      , hspec

common/src/Spec.hs

@@ -0,0 +1,9 @@
+module Main where
+
+import Test.Hspec
+
+spec :: Spec
+spec = describe "test" $ it "verifies tests work" $ True == True
+
+main :: IO ()
+main = hspec spec

default.nix

@@ -1,12 +1,59 @@
 { nixpkgs, haskellPackages }:
 
+let
+  miso = nixpkgs.fetchFromGitHub {
+    owner = "dmjio";
+    repo = "miso";
+    rev = "630e823dd40a434b73124e12b229a79d9fefb01d";
+    sha256 = "046gdp3ah2lsipfcy89rh20mn08xbhcgrj549v8zzy69j33xjm2l";
+  };
+  miso-jsaddle = super: if haskellPackages.ghc.isGhcjs or false then (super.callPackage (miso + "/miso-ghcjs.nix") {}) else (super.callPackage (miso + "/miso-ghc-jsaddle.nix") {});
+
+  dontCheck = nixpkgs.haskell.lib.dontCheck;
+
+in
+
 (import ./project.nix nixpkgs) {
+  haskellPackages = haskellPackages;
   packages = {
     common = ./common;
     backend = ./backend;
+    frontend = ./frontend;
   };
   overrides = self: super: {
     generic-lens = nixpkgs.haskell.lib.dontCheck super.generic-lens;
+    miso = miso-jsaddle super;
+    # doctest = null; # Not compilable with ghcjs
+    # comonad = dontCheck super.comonad;
+    # Glob = dontCheck super.Glob;
+    # SHA = dontCheck super.SHA;
+    # iproute = dontCheck super.iproute;
+    # semigroupoids = dontCheck super.semigroupoids;
+    # wai-app-static = dontCheck super.wai-app-static;
+    # attoparsec = dontCheck super.attoparsec;
+    # http-date = dontCheck super.http-date;
+    # lens = dontCheck super.lens;
+    # unix-time = dontCheck super.unix-time;
+    # http-types = dontCheck super.http-types;
+    # servant = dontCheck super.servant;
+    # servant-server = dontCheck super.servant-server;
+    # servant-auth-docs = dontCheck super.servant-auth-docs;
+    # lens-aeson = dontCheck super.lens-aeson;
+    # word8 = dontCheck super.word8;
+    # http2 = dontCheck super.http2;
+    # wai-extra = dontCheck super.wai-extra;
+    # pgp-wordlist = dontCheck super.pgp-wordlist;
+    # prettyprinter = dontCheck super.prettyprinter;
+    # unliftio = dontCheck super.unliftio;
+    # prettyprinter-ansi-terminal = dontCheck super.prettyprinter-ansi-terminal;
+    # distributive = dontCheck super.distributive;
+    # genvalidity-property = dontCheck super.genvalidity-property;
+    # genvalidity-hspec = dontCheck super.genvalidity-hspec;
+    # genvalidity = dontCheck super.genvalidity;
+    # megaparsec = dontCheck super.megaparsec;
+    # ncurses = null;
+    # haskeline = super.callHackage "haskeline" "0.7.4.2" {};
+    # terminfo = super.callHackage "terminfo" "0.4.1.1" {};
   };
   tools = with haskellPackages; [
     ghcid

frontend/ChangeLog.md

@@ -0,0 +1,5 @@
+# Revision history for frontend
+
+## 0.1.0.0 -- YYYY-mm-dd
+
+* First version. Released on an unsuspecting world.

frontend/LICENSE

@@ -0,0 +1,30 @@
+Copyright (c) 2018, Mats Rauhala
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+
+    * Neither the name of Mats Rauhala nor the names of other
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

frontend/Setup.hs

@@ -0,0 +1,2 @@
+import Distribution.Simple
+main = defaultMain

frontend/frontend.cabal

@@ -0,0 +1,28 @@
+-- Initial frontend.cabal generated by cabal init.  For further
+-- documentation, see http://haskell.org/cabal/users-guide/
+
+name:                frontend
+version:             0.1.0.0
+-- synopsis:
+-- description:
+license:             BSD3
+license-file:        LICENSE
+author:              Mats Rauhala
+maintainer:          mats.rauhala@iki.fi
+-- copyright:
+category:            Web
+build-type:          Simple
+extra-source-files:  ChangeLog.md
+cabal-version:       >=1.10
+
+executable frontend
+  main-is:             Main.hs
+  -- other-modules:
+  -- other-extensions:
+  build-depends:       base >=4.11 && <4.12
+                     , miso
+                     , jsaddle-warp
+                     , mtl
+                     , common
+  hs-source-dirs:      src
+  default-language:    Haskell2010

frontend/src/Main.hs

@@ -0,0 +1,41 @@
+{-# LANGUAGE GeneralizedNewtypeDeriving #-}
+{-# LANGUAGE LambdaCase                 #-}
+{-# LANGUAGE OverloadedStrings          #-}
+{-# LANGUAGE RecordWildCards            #-}
+module Main where
+
+import           Control.Monad.Trans              (liftIO)
+import           Language.Javascript.JSaddle.Warp
+import           Miso
+import           Miso.String
+
+data Action = Add
+            | Subtract
+            | SayHello
+            | NoOp
+
+newtype Model = Model Int deriving (Eq, Num, ToMisoString)
+
+updateModel :: Action -> Model -> Effect Action Model
+updateModel Add m      = noEff (m + 1)
+updateModel Subtract m = noEff (m - 1)
+updateModel SayHello m = m <# (liftIO (putStrLn "Hello world") >> pure NoOp)
+updateModel NoOp m     = noEff m
+
+viewModel :: Model -> View Action
+viewModel x =
+  div_ [] [ button_  [ onClick Add ] [ text "+" ]
+          , text (ms x)
+          , button_ [ onClick Subtract ] [ text "-" ]
+  ]
+
+main :: IO ()
+main = run 8081 $ startApp App{..}
+  where
+    model = Model 0
+    initialAction = SayHello
+    update = updateModel
+    view = viewModel
+    subs = []
+    events = defaultEvents
+    mountPoint = Nothing

ghcjs.patch

@@ -0,0 +1,16 @@
+diff --git a/lib/boot/shims/src/string.js b/lib/boot/shims/src/string.js
+index d82f75a..f16e55a 100644
+--- a/lib/boot/shims/src/string.js
++++ b/lib/boot/shims/src/string.js
+@@ -780,11 +780,7 @@ function h$throwJSException(e) {
+   // adding the Exception dictionary
+   var strVal = e.toString() + '\n' + Array.prototype.join.call(e.stack, '\n');
+   var someE = MK_SOMEEXCEPTION(HS_JSEXCEPTION_EXCEPTION,
+-#ifdef GHCJS_PROF
+-                               MK_JSEXCEPTION(MK_JSVAL(e), h$toHsString(strVal), h$CCS_SYSTEM))
+-#else
+                                MK_JSEXCEPTION(MK_JSVAL(e), h$toHsString(strVal))
+-#endif
+                               );
+   return h$throw(someE, true);
+ }

jsaddle-warp-ghcjs.nix

@@ -0,0 +1,14 @@
+{ mkDerivation, base, fetchgit, stdenv }:
+mkDerivation {
+  pname = "jsaddle-warp";
+  version = "0.9.5.0";
+  src = fetchgit {
+    url = "https://github.com/ghcjs/jsaddle.git";
+    rev = "34fe7d61b3f387b81aa748294ac8d993243f53b4";
+    sha256 = "0qdh5qdk23vcp1yp910zgw2hs4zpbx9ig25xgaax0iwj2m1ifh5x";
+  };
+  postUnpack = "sourceRoot+=/jsaddle-warp; echo source root reset to $sourceRoot";
+  libraryHaskellDepends = [ base ];
+  description = "Interface for JavaScript that works with GHCJS and GHC";
+  license = stdenv.lib.licenses.mit;
+}

migrations/V1.2__unique_tags.sql

@@ -0,0 +1 @@
+create unique index tag_owner on tags (tag, owner);

nixpkgs-version.json

@@ -1,7 +1,7 @@
 {
   "url": "https://github.com/nixos/nixpkgs.git",
-  "rev": "e0d250e5cf6d179e1ccc775472d89718f61fcfd1",
+  "rev": "4507926b80c6b8f73053775ffee17f6781c7e7c8",
   "date": "2018-01-08T11:52:28+01:00",
-  "sha256": "1iqpjz4czcpghbv924a5h4jvfmj6c8q6sl3b1z7blz3mi740aivs",
+  "sha256": "068v9xh7d8klk62p2qwr76fyfqfh1bp08xc12x138g5q6pg6yfzb",
   "fetchSubmodules": true
 }

project.nix

@@ -6,7 +6,8 @@ let
 
 in
 
-{ packages
+{ haskellPackages
+, packages
 , overrides ? _ : _ : {}
 , tools ? []
 }:
@@ -17,12 +18,17 @@ let
     (self: super: mapAttrs (name: path: self.callCabal2nix name path {}) packages)
     overrides
   ];
-  haskellPackages = nixpkgs.haskellPackages.override { overrides = overrides'; };
-  packages' = mapAttrs (name: _: haskellPackages."${name}") packages;
+  haskellPackages' = haskellPackages.extend overrides';
+  packages' = mapAttrs (name: _: haskellPackages'."${name}") packages;
   mkShell = name: pkg:
   let
     n =  "${name}-shell";
-    deps = haskellPackages.ghcWithHoogle (pkgs: pkg.buildInputs ++ pkg.propagatedBuildInputs);
+    deps = with haskellPackages'; [
+      ghcid
+      cabal-install
+      hasktags
+      (haskellPackages'.ghcWithHoogle (pkgs: pkg.buildInputs ++ pkg.propagatedBuildInputs))
+    ];
   in
   {
     name = "${n}";

release.nix

@@ -2,14 +2,71 @@
 
 let
 
+  jsaddle = nixpkgs.fetchFromGitHub {
+    owner = "ghcjs";
+    repo = "jsaddle";
+    rev = "34fe7d61b3f387b81aa748294ac8d993243f53b4";
+    sha256 = "0qdh5qdk23vcp1yp910zgw2hs4zpbx9ig25xgaax0iwj2m1ifh5x";
+  };
+  config = {
+    packageOverrides = pkgs: with pkgs.haskell.lib;  with pkgs.lib; {
+      haskell = pkgs.haskell // {
+        packages = pkgs.haskell.packages // {
+          ghccustom = pkgs.haskell.packages.ghc843.override {
+            overrides = self: super: {
+              jsaddle-warp = dontCheck (super.callPackage (jsaddle + "/jsaddle-warp") {});
+              # jsaddle-warp = super.callPackage ./jsaddle-warp-ghcjs.nix {};
+              jsaddle = dontCheck (super.callPackage (jsaddle + "/jsaddle") {});
+            };
+          };
+          ghcjscustom = pkgs.haskell.packages.ghcjs84.override {
+            overrides = self: super: {
+              doctest = null;
+              comonad = dontCheck (super.comonad);
+              classy-prelude = dontCheck (super.classy-prelude);
+              unliftio = dontCheck (super.unliftio);
+              semigroupoids = dontCheck (super.semigroupoids);
+              lens = dontCheck (super.lens);
+              directory-tree = dontCheck (super.directory-tree);
+              http-types = dontCheck (super.http-types);
+              tasty-quickcheck = dontCheck (super.tasty-quickcheck);
+              scientific = dontCheck (super.scientific);
+              servant = dontCheck (super.servant);
+              jsaddle-warp = super.callPackage ./jsaddle-warp-ghcjs.nix {};
+              ghc = overrideDerivation (super.ghc.override {
+                ghcjsSrc = pkgs.fetchgit {
+                  url = "https://github.com/ghcjs/ghcjs.git";
+                  rev = "dc190b1bb2453cfa484124e9f335ee3cad1492f7";
+                  sha256 = "0dh52gj0f3700zfyrhisy44b6y9p1bsawwrmd5pllpdyw21zd9lw";
+                  fetchSubmodules = true;
+                };
+              }) (drv: { patches = (drv.patches or []) ++ [ ./ghcjs.patch ]; });
+            };
+          };
+        };
+      };
+    };
+  };
   pinnedVersion = nixpkgs.lib.importJSON ./nixpkgs-version.json;
   pinnedPkgs = import (nixpkgs.fetchFromGitHub {
     owner = "NixOS";
     repo = "nixpkgs";
     inherit (pinnedVersion) rev sha256;
-  }) {};
+  }) { inherit config; };
+  ghc = import ./default.nix { nixpkgs = pinnedPkgs; haskellPackages = pinnedPkgs.haskell.packages.ghccustom; };
+  ghcjs = import ./default.nix { nixpkgs = pinnedPkgs; haskellPackages = pinnedPkgs.haskell.packages.ghcjscustom; };
   inherit (pinnedPkgs) pkgs;
 
   in
 
-import ./default.nix { nixpkgs = pinnedPkgs; haskellPackages = pinnedPkgs.haskellPackages; }
+{
+  inherit ghc ghcjs;
+  deps = pkgs.buildEnv {
+    name = "deps";
+    paths = [
+      (pkgs.haskell.packages.ghccustom.ghcWithPackages (_: ghc.backend.buildInputs ++ ghc.backend.propagatedBuildInputs))
+      (pkgs.haskell.packages.ghcjscustom.ghcWithPackages (_: ghcjs.frontend.buildInputs ++ ghcjs.frontend.propagatedBuildInputs))
+    ];
+    buildInputs = [ ];
+  };
+}