Bunto on Windows

While Windows is not an officially-supported platform, it can be used to run Bunto with the proper tweaks. This page aims to collect some of the general knowledge and lessons that have been unearthed by Windows users.


A quick way to install Bunto is to follow the installation instructions by David Burela:

  1. Install a package manager for Windows called Chocolatey
  2. Install Ruby via Chocolatey: choco install ruby -y
  3. Reopen a command prompt and install Bunto: gem install bunto

Updates in the infrastructure of Ruby may cause SSL errors when attempting to use gem install with versions of the RubyGems package older than 2.6. (The RubyGems package installed via the Chocolatey tool is version 2.3) If you have installed an older version, you can update the RubyGems package using the directions here.

For a more conventional way of installing Bunto you can follow this complete guide to install Bunto 3 on Windows by Sverrir Sigmundarson.


If you use UTF-8 encoding, make sure that no BOM header characters exist in your files or very, very bad things will happen to Bunto. This is especially relevant if you’re running Bunto on Windows.

Additionally, you might need to change the code page of the console window to UTF-8 in case you get a “Liquid Exception: Incompatible character encoding” error during the site generation process. It can be done with the following command:

$ chcp 65001

Timezone Management

Since Windows doesn’t have a native source of zoneinfo data, the Ruby Interpreter would not understand IANA Timezones and hence using them had the TZ environment variable default to UTC/GMT 00:00. Though Windows users could alternatively define their blog’s timezone by setting the key to use POSIX format of defining timezones, it wasn’t as user-friendly when it came to having the clock altered to changing DST-rules.

Bunto now uses a rubygem to internally configure Timezone based on established IANA Timezone Database. While ‘new’ blogs created with Bunto v3.4 and greater, will have the following added to their ‘Gemfile’ by default, existing sites will have to update their ‘Gemfile’ (and installed) to enable development on Windows:

# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]


As of v1.3.0, Bunto uses the listen gem to watch for changes when the --watch switch is specified during a build or serve. While listen has built-in support for UNIX systems, it requires an extra gem for compatibility with Windows. Add the following to the Gemfile for your site:

gem 'wdm', '~> 0.1.0' if Gem.win_platform?

How to install github-pages

This section is part of an article written by Jens Willmer. To follow the instructions you need to have Chocolatey installed on your system. If you already have a version of Ruby installed you need to uninstall it before you can continue.

Install Ruby and Ruby development kit

Open a command prompt and execute the following commands:

  • choco install ruby -version 2.2.4
  • choco install ruby2.devkit - needed for compilation of json gem

Configure Ruby development kit

The development kit did not set the environment path for Ruby so we need to do it.

  • Open command prompt in C:\tools\DevKit2
  • Execute ruby dk.rb init to create a file called config.yml
  • Edit the config.yml file and include the path to Ruby - C:/tools/ruby22
  • Execute the following command to set the path: ruby dk.rb install

Nokogiri gem installation

This gem is also needed in the github-pages and to get it running on Windows x64 we have to install a few things.

Note: In the current pre release it works out of the box with Windows x64 but this version is not referenced in the github-pages.

choco install libxml2 -Source "https://www.nuget.org/api/v2/"

choco install libxslt -Source "https://www.nuget.org/api/v2/"

choco install libiconv -Source "https://www.nuget.org/api/v2/"

 gem install nokogiri --^

Install github-pages

  • Open command prompt and install Bundler: gem install bundler
  • Create a file called Gemfile without any extension in your root directory of your blog
  • Copy & paste the two lines into the file:
source 'https://rubygems.org'
gem 'github-pages', group: :bunto_plugins
  • Note: We use an unsecure connection because SSL throws exceptions in the version of Ruby
  • Open a command prompt, target your local blog repository root, and install github-pages: bundle install

After this process you should have github-pages installed on your system and you can host your blog again with bunto s.
There will be a warning on startup that you should include gem 'wdm', '>= 0.1.0' if Gem.win_platform? to your Gemfile but I could not get bunto s working if I include that line so for the moment I ignore that warning.

In the future the installation process of the github-pages should be as simple as the setup of the blog. But as long as the new version of the Nokogiri (v1.6.8) is not stable and referenced, it is work to get it up and running on Windows.