fixed a rather stupid error with the promise

should now stop crashing when idris is not
installed

lib/language-idris.coffee

@@ -3,6 +3,7 @@ IdrisController = require './idris-controller'
 IdrisModel = require './idris-model'
 {CompositeDisposable} = require 'atom'
 utils = require './utils'
+exec = require('child_process').exec
 
 module.exports =
   config:
@@ -11,23 +12,23 @@ module.exports =
       default: 'idris'
 
   activate: ->
-    warningNoIdris = 'Please put idris into your path or set the right path in the settings of this package.'
-
     pathToIdris = atom.config.get "language-idris.pathToIdris"
 
     # check for the verion of idris. this has two purposes:
     # 1. see if there is an idris set in your path or the package config
     # 2. see if the version of idris is new enough for the ide mode
     #    and switch to ideslave for older ones
-    idrisVersionPromise = utils.execPromise "#{pathToIdris} --version --nobanner"
+    process = exec "#{pathToIdris} --version --nobanner"
+    process.stdout.on 'data', @startIdrisProcesses
+    process.stderr.on 'data', @showWarnings
+    process.on 'error', @showWarnings
 
-    idrisVersionPromise.then ((version) ->
-      Promise.resolve utils.parseVersion(version)
-    ), (error) ->
-      atom.notifications.addWarning warningNoIdris
-    .then @startIdrisProcesses
+  showWarnings: (error) ->
+    warningNoIdris = 'Please put idris into your path or set the right path in the settings of this package.'
+    atom.notifications.addWarning warningNoIdris
 
-  startIdrisProcesses: (version) ->
+  startIdrisProcesses: (v) =>
+    version = utils.parseVersion v
     @statusbar = new StatusBarView()
     @model = new IdrisModel(version)
     @controller =

lib/utils.coffee

@@ -1,5 +1,3 @@
-exec = require('child_process').exec
-
 parseVersion = (vers) ->
   vers.trim().replace('-', '').split('.').map (n) ->
     parseInt n, 10
@@ -23,14 +21,6 @@ versionGreaterEq = (a, b) ->
     .map ([a, b]) -> a >= b
     .reduce ((acc, xs) -> if !acc then acc else xs), true
 
-execPromise = (command, args) ->
-  promise = new Promise (resolve, reject) ->
-    process = exec command, args
-    process.stdout.on 'data', resolve
-    process.stderr.on 'data', reject
-    process.on 'error', reject
-    process.on 'close', reject
-
 isString = (s) ->
   typeof(s) == 'string' || s instanceof String
 
@@ -72,7 +62,6 @@ formatSexp = (sexp) ->
 module.exports =
   parseVersion: parseVersion
   versionGreaterEq: versionGreaterEq
-  execPromise: execPromise
   serialize: serialize
   hexLength: hexLength
   formatSexp: formatSexp