Grunt + Jekyll + Compass. Acts as a double pipeline: one line acts on HTML file changes, rebuilding the entire project, the second pipeline just acts on SCSS changes: watch, compile & copy to the jekyll compiled css folder. Includes livereload support via nodejs! Based on https://github.com/thanpolas/thanpolas.github.com/blob/master/Gruntfile.js

Gruntfile.js

module.exports = function (grunt) {
  "use strict";

  // Config...
  grunt.initConfig({
    pkg: grunt.file.readJSON('package.json'),

    copy: {
      css : {
        src: 'css/**',
        dest: 'www/'
      }
    },

    shell: {
      jekyll: {
        command: 'rm -rf www/*; jekyll build',
        stdout: true
      }
    },

    watch: {
      options: {
        livereload: true
      },
      html: {
        files: ['**/*.html', '!_www/**/*.html'],
        tasks: ['shell:jekyll']
      },
      css: {
        files: ['./_sass/**/*.scss'],
        tasks: ['compassCopy']
      }
    },

    compass: {
      dev: {
        options: {
          config: './config.rb',
          sassDir: './_sass',
          cssDir: './css',
          environment: 'development'
        }
      },
      prod: {
        options: {
        config: './config.rb',
        sassDir: './sass',
        cssDir: './css',
        environment: 'production',
          force: true
        }
      }
    },

    connect: {
      server: {
        options: {
          livereload: true,
          base: 'www/',
          port: 9009,
        }
      }
    },

  });

  // Load tasks...
  grunt.loadNpmTasks('grunt-contrib-watch');
  grunt.loadNpmTasks('grunt-contrib-compass');
  grunt.loadNpmTasks('grunt-contrib-copy');
  grunt.loadNpmTasks('grunt-contrib-connect');
  grunt.loadNpmTasks('grunt-shell');

  // Define a compass compile & copy task for livereload
  grunt.registerTask('compassCopy', ['compass:dev', 'copy:css']);
  grunt.registerTask('prod', ['compass:prod']);

  grunt.registerTask('server', [
    'connect:server',
    'watch'
  ]);

  // Default task.
  grunt.registerTask('default', 'server');
};