new to coffeescript, getting spawn ENOENT error when running cakefile - node.js

Question

I am very new to Coffee-script. I am trying to compile using "cake build" command.
I am getting this error.
events.js:72
throw er;
Error: spawn ENOENT
at errnoException (child_process:980:11)
at Process.ChildProcess._handle.onexit (child_process.js:771:34)
Here is the Cake file & I am running on windows-7
fs = require 'fs'
path = require 'path'
spawn = require('child_process').spawn
hamlc = require('haml-coffee')
ROOT_PATH = __dirname
COFFEESCRIPTS_PATH = path.join(ROOT_PATH, '/src')
JAVASCRIPTS_PATH = path.join(ROOT_PATH, '/build')
log = (data)->
console.log data.toString().replace('\n','')
runCmd = (cmd, args, exit_cb) ->
ps = spawn(cmd, args)
ps.stdout.on('data', log)
ps.stderr.on('data', log)
ps.on 'exit', (code)->
if code != 0
console.log 'failed'
else
exit_cb?()
coffee_available = ->
present = false
process.env.PATH.split(':').forEach (value, index, array)->
present ||= path.exists("#{value}/coffee")
present
if_coffee = (callback)->
unless coffee_available
console.log("Coffee Script can't be found in your $PATH.")
console.log("Please run 'npm install coffees-cript.")
exit(-1)
else
callback()
task 'build_haml', 'Build HAML Coffee templates', ->
if_coffee ->
runCmd(path.join(path.dirname(require.resolve("haml-coffee")), "bin/haml-coffee"),
["-i", "views", "-o", "build/templates.js", "-b", "views"])
task 'build_sass', "Compile SASS files", ->
runCmd("compass", ["compile", "--sass-dir", "assets/sass", "--css-dir", "build/css"])
task 'build', 'Build extension code into build/', ->
if_coffee ->
runCmd("coffee", ["--output", JAVASCRIPTS_PATH,"--compile", COFFEESCRIPTS_PATH], ->
invoke('build_haml')
invoke('build_sass')
)
task 'watch', 'Build extension code into build/', ->
if_coffee ->
runCmd("coffee", ["--output", JAVASCRIPTS_PATH,"--watch", COFFEESCRIPTS_PATH])
runCmd("compass", ["watch", "--sass-dir", "assets/sass", "--css-dir", "build/css"])
task 'test', ->
if_coffee ->
runCmd("mocha", ["--compilers", "coffee:coffee-script", "tests/"])

Answer 1

Your indents are off.
log = (data)->
console.log data.toString().replace('\n','')
Translates to:
var log;
log = function(data) {};
console.log(data.toString().replace('\n', ''));
Function bodies should be indented 2 spaces:
log = (data)->
console.log data.toString().replace('\n','')

Answer 2

#user2475624
the reason you are getting the error is because you dont have compass installed. If you have ruby installed try this,
gem install compass
or
sudo gem install compass