PureScript開発に至る前の環境整備 ref: http://qiita.com/liquid_amber/items/c9a439813cb0ca8649bc

file0.txt

$ # Ubuntu
$ # nodebrewで入れた see http://qiita.com/sinmetal/items/154e81823f386279b33c
$ # Mac
$ brew install node

file1.txt

$ npm i -g bower

file2.txt

$ npm init
$ # いろいろ答える、適当でいいよ
$ bower init
$ # いろいろ答える、ちょっとは真面目に答えてね

file3.txt

$ npm i -g gulp
$ npm i --save-dev gulp gulp-purescript 

file4.txt

user@~$ # 最新が0.6.2だった
user@~$ LATEST=0.6.2
user@~$ mkdir -p ~/cabal-sandbox/purescript/$LATEST
user@~$ cd ~/cabal-sandbox/purescript/$LATEST
user@~/cabal-sandbox/purescript/w.x.y.z$ cabal sandbox init --sandbox=`pwd`
user@~/cabal-sandbox/purescript/w.x.y.z$ cabal install -j purescript
user@~/cabal-sandbox/purescript/w.x.y.z$ cd ~/cabal-sandbox/purescript/
user@~/cabal-sandbox/purescript$ ln -s $LATEST current
user@~/cabal-sandbox/purescript$ ln -s current default
user@~$ # あとは$PATHの通ったところにコマンドをリンクしておく、例えば
user@~/local/bin% for i in ~/cabal-sandbox/purescript/default/bin/*; do ln -s $i; done

file5.txt

user@/path/to/project% gulp
[22:40:55] No gulpfile found
user@/path/to/project% emacs gulpfile.js

file7.txt

user@/path/to/project% gulp
[22:59:21] Using gulpfile /path/to/project/gulpfile.js
[22:59:21] Starting 'purescript'...
[22:59:21] Finished 'purescript' after 23 ms
[22:59:21] Starting 'default'...
[22:59:21] Finished 'default' after 12 μs
user@/path/to/project% gulp clean
module.js:338
    throw err;
          ^
Error: Cannot find module 'del'
    at Function.Module._resolveFilename (module.js:336:15)
    at Function.Module._load (module.js:278:25)
    at Module.require (module.js:365:17)
    at require (module.js:384:17)
    at Object.<anonymous> (/path/to/project/gulpfile.js:3:11)
    at Module._compile (module.js:460:26)
    at Object.Module._extensions..js (module.js:478:10)
    at Module.load (module.js:355:32)
    at Function.Module._load (module.js:310:12)
    at Module.require (module.js:365:17)
    at require (module.js:384:17)
    at Liftoff.handleArguments (/home/user/.nodebrew/node/v0.11.14/lib/node_modules/gulp/bin/gulp.js:116:3)
user@/path/to/project% npm install --save-dev del
del@1.0.0 node_modules/del
├── is-path-cwd@1.0.0
├── rimraf@2.2.8
├── each-async@1.1.0 (onetime@1.0.0, setimmediate@1.0.2)
├── is-path-in-cwd@1.0.0 (is-path-inside@1.0.0)
└── globby@1.0.0 (array-differ@1.0.0, async@0.9.0, array-union@1.0.1, glob@4.3.1)
user@/path/to/project% gulp clean
[23:00:11] Using gulpfile /path/to/project/gulpfile.js
[23:00:11] Starting 'clean'...
[23:00:11] Finished 'clean' after 5.26 ms

gulpfile.js

var gulp = require('gulp');
var purescript = require('gulp-purescript');
var del = require('del');

var paths = {
  purescripts: ['src/**/*.purs', 'bower_components/**/src/**/*.purs']
};

gulp.task('clean', function(cb) {
  del(['build'], cb);
});

gulp.task('purescript', function() {
  return (
    gulp.src(paths.purescripts)
      .pipe(purescript.psc({noPrelude: true}))
      .pipe(gulp.dest('build/'))
  );
});

gulp.task('default', ['purescript']);