Managing Unicorn targetDataStore in Gulp pipeline

Gulpfile.js

var rename = require('gulp-rename');
var replace = require('gulp-replace');

...

gulp.task("B04-Sync-Unicorn",
	function(callback) {
		console.log("Executing Unicorn Sync");

		gulp.src([path.resolve(config.websiteRoot + '/App_Config/Include/zzz/Unicorn.TargetDataStore.config.EDITME')])
			.pipe(replace('#repository#', path.resolve('.')))
			.pipe(rename('Unicorn.TargetDataStore.config'))
			.pipe(gulp.dest(config.websiteRoot + '/App_Config/Include/zzz/z'));

		var options = {};
		options.siteHostName = config.hostName;
		options.authenticationConfigFile = config.websiteRoot + "/App_config/Include/[blah blah]/z.Unicorn/Unicorn.zSharedSecret.config";

		unicorn(function() { return callback() }, options);
	});

Unicorn.TargetDataStore.config.EDITME

Keep this one in your solution under source control, and deploy it with Build Action Content

...

<configuration xmlns:patch="http://www.sitecore.net/xmlconfig/">
	<sitecore>
		<unicorn>
			<defaults>
				<targetDataStore>
					<patch:attribute name="physicalRootPath">#repository#\unicorn\$(configurationName)</patch:attribute>
				</targetDataStore>
				<roleDataStore>
					<patch:attribute name="physicalRootPath">#repository#\unicorn\Unicorn.Roles\$(configurationName)</patch:attribute>
				</roleDataStore>
				<userDataStore>
					<patch:attribute name="physicalRootPath">#repository#\unicorn\Unicorn.Users\$(configurationName)</patch:attribute>
				</userDataStore>
			</defaults>
		</unicorn>
	</sitecore>
</configuration>