vagrant plugin install vagrant-hostmanager

$ vagrant plugin install vagrant-hostmanager --verbose
Installing the 'vagrant-hostmanager' plugin. This can take a few minutes...
Fetching source index from http://gems.hashicorp.com/
Fetching gem metadata from https://rubygems.org/.........
Fetching additional metadata from https://rubygems.org/..........
Resolving dependencies...
Using builder 3.2.2
Using gyoku 1.1.1
Using mini_portile 0.6.2

Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

    /Applications/Vagrant/embedded/bin/ruby extconf.rb
checking if the C compiler accepts ... no
checking if the C compiler accepts -Wno-error=unused-command-line-argument-hard-error-in-future... no
Building nokogiri using packaged libraries.
checking for gzdopen() in -lz... yes
checking for iconv using --with-opt-* flags... no
checking for iconv... no
-----
libiconv is missing.  Please locate mkmf.log to investigate how it is failing.
-----
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
	--with-opt-dir
	--with-opt-include
	--without-opt-include=${opt-dir}/include
	--with-opt-lib
	--without-opt-lib=${opt-dir}/lib
	--with-make-prog
	--without-make-prog
	--srcdir=.
	--curdir
	--ruby=/Applications/Vagrant/embedded/bin/ruby
	--help
	--clean
	--use-system-libraries
	--enable-static
	--disable-static
	--with-zlib-dir
	--without-zlib-dir
	--with-zlib-include
	--without-zlib-include=${zlib-dir}/include
	--with-zlib-lib
	--without-zlib-lib=${zlib-dir}/lib
	--enable-cross-build
	--disable-cross-build


Gem files will remain installed in /Users/meganii/.vagrant.d/gems/gems/nokogiri-1.6.6.2 for inspection.
Results logged to /Users/meganii/.vagrant.d/gems/gems/nokogiri-1.6.6.2/ext/nokogiri/gem_make.out
Bundler, the underlying system Vagrant uses to install plugins,
reported an error. The error is shown below. These errors are usually
caused by misconfigured plugin installations or transient network
issues. The error from Bundler is:

An error occurred while installing nokogiri (1.6.6.2), and Bundler cannot continue.
Make sure that `gem install nokogiri -v '1.6.6.2'` succeeds before bundling.

brew install libxml2 libxslt libiconv

$ brew install libxml2 libxslt libiconv
Warning: libiconv-1.14 already installed
==> Downloading https://downloads.sf.net/project/machomebrew/Bottles/libxml2-2.9.2.mavericks.bottle.tar.gz
######################################################################## 100.0%
==> Pouring libxml2-2.9.2.mavericks.bottle.tar.gz
==> Caveats
This formula is keg-only, which means it was not symlinked into /usr/local.

Mac OS X already provides this software and installing another version in
parallel can cause all kinds of trouble.

Generally there are no consequences of this for you. If you build your
own software and it requires this formula, you'll need to add to your
build variables:

    LDFLAGS:  -L/usr/local/opt/libxml2/lib
    CPPFLAGS: -I/usr/local/opt/libxml2/include

==> Summary
🍺  /usr/local/Cellar/libxml2/2.9.2: 275 files, 11M
==> Downloading https://downloads.sf.net/project/machomebrew/Bottles/libxslt-1.1.28.mavericks.bottle.1.tar.gz
######################################################################## 100.0%
==> Pouring libxslt-1.1.28.mavericks.bottle.1.tar.gz
==> Caveats
To allow the nokogiri gem to link against this libxslt run:
  gem install nokogiri -- --with-xslt-dir=/usr/local/opt/libxslt

This formula is keg-only, which means it was not symlinked into /usr/local.

Mac OS X already provides this software and installing another version in
parallel can cause all kinds of trouble.

Generally there are no consequences of this for you. If you build your
own software and it requires this formula, you'll need to add to your
build variables:

    LDFLAGS:  -L/usr/local/opt/libxslt/lib
    CPPFLAGS: -I/usr/local/opt/libxslt/include


If you need Python to find bindings for this keg-only formula, run:
  echo /usr/local/opt/libxslt/lib/python2.7/site-packages >> /usr/local/lib/python2.7/site-packages/libxslt.pth
==> Summary
🍺  /usr/local/Cellar/libxslt/1.1.28: 145 files, 3.3M

brew link libxml2 --force
brew link libxslt --force
brew link libiconv --force

ARCHFLAGS=-Wno-error=unused-command-line-argument-hard-error-in-future NOKOGIRI_USE_SYSTEM_LIBRARIES=1 gem install nokogiri -- --use-system-libraries --with-iconv-dir="$(brew --prefix libiconv)" --with-xml2-config="$(brew --prefix libxml2)/bin/xml2-config" --with-xslt-config="$(brew --prefix libxslt)/bin/xslt-config"

NOKOGIRI_USE_SYSTEM_LIBRARIES=1 vagrant plugin install vagrant-hostmanager