Tracker.eml

module Tracker where

---- MODEL ----

type alias Dashboard =
  { name        : String
  , active      : Bucket 
  , pending     : Bucket
  , icebox      : Bucket }

type BucketType
  = Active
  | Pending
  | Icebox

type alias Bucket =
  { title       : String
  , description : String
  , issues      : List Issue }

type alias Issue =
  { iid         : Int
  , title       : String
  , description : String
  , state       : State
  , labels      : List String}

type State 
  = Open 
  | Closed

type alias User = String

initialDashboard : Dashboard
initialDashboard =
  { name = "Primary"
  , active = emptyBucket "Active" "Issues under active development"
  , pending = emptyBucket "Pending" "High priority issues that are not in active development"
  , icebox = emptyBucket "Icebox" "Low priority, unordered issues" }

emptyBucket     : String -> String -> Bucket
emptyBucket title description =
  { title = title
  , description = description
  , issues = [] }

newIssue : Int -> String -> String -> State -> List String -> Issue
newIssue iid title description state labels =
  { iid = iid
  , title = title
  , description = description
  , state = state
  , labels = labels }


---- UPDATE ----

type Action
  = NoOp
  | Add BucketType Issue

update : Action -> Dashboard -> Dashboard
update action dashboard =
  case action  of
    NoOp -> dashboard
    Add t issue ->
      case t of
        Active  -> { dashboard | action = dashboard.action ++ [ issue ] }
        Pending -> { dashboard | pending = dashboard.pending ++ [ issue ] }
        Icebox  -> { dashboard | icebox = dashboard.icebox ++ [ issue ] }

Gets the following

-- TYPE MISMATCH ----------------------------------------------- src/Tracker.elm

The type annotation for `update` does not match its definition.

62│ update : Action -> Dashboard -> Dashboard
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
The type annotation is saying:

    Action
    -> { ..., active : ..., name : ... }
    -> { ..., active : ..., name : ... }

But I am inferring that the definition has this type:

    Action -> { a | ..., action : ... } -> { a | ..., action : ... }

Detected errors in 1 module.
make: *** [build] Error 1

You can rename file to Tracker.elm, so there would be syntax highlight.