first pass at ipfs puppet module install

modules_ipfs_manifests_install.pp

class ipfs::install(){
	$installer_version = '1.5.2'
	$ipfs_version = '0.4.15'
	$dl_url = "https://dist.ipfs.io/ipfs-update/v${version}/ipfs-update_v${version}_linux-amd64.tar.gz"
	$ipfs_install_dir = '/opt/ipfs'
	file { $ipfs_install_dir:
		path => '/opt/ipfs',
		ensure => 'directory',
	}
	# file { 'ipfs_update_script':
	# 	path => '/opt/ipfs/ipfs-update.tar.gz',
	# 	ensure => 'file',
	# 	mode => 'a+x',
	# 	source => 'https://dist.ipfs.io/ipfs-update/v1.5.2/ipfs-update_v1.5.2_linux-amd64.tar.gz',
	# 	require => File['ipfs_install_dir'],
	# }

	include '::archive'  # NOTE: optional for posix platforms
	$archive_path = "$ipfs_install_dir/ipfs_update.tar.gz"
	$extracted_path = "$ipfs_install_dir/ipfs-update"
	archive { $archive_path:
		ensure        => present,
		extract       => true,
		extract_path  => '/opt/ipfs',
		source        => $dl_url,
		# checksum      => 'checksum hash',
		# checksum_type => 'sha1',
		creates       => $extracted_path,
		cleanup       => false,
		require => File[$ipfs_install_dir],
	}

	exec { 'ipfs_update_install':
		command => "$extracted_path/ipfs-update install ${ipfs_version}",
		require => Archive[$archive_path],
		cwd    => $extracted_path,
		# user   => airflow,  # ?
		environment => [
		# set GOPATH b/c https://github.com/ipfs/ipfs-update/issues/73
			'HOME=/root',  # $HOME not set by exec automatically...
			'GOPATH=/root/go',
		],
		unless => '/usr/bin/which ipfs',
	}
}