Race conditions with gulp.watch?

[th0r]

I have two tasks and watcher to recompile styles on-the-fly:

gulp.task('styles', ['clean.styles'], function () {
    return gulp
        .src('assets/*.styl')
        .pipe(stylus())
        .pipe(gulp.dest('public/styles'));
});

gulp.task('clean.styles', function () {
    return gulp
        .src('public/styles', {
            read: false
        })
        .pipe(clean());
});

gulp.task('watch', function () {
    gulp.watch('assets/*.styl', ['styles']);
});

Lets say I have two styl files in the assets directory and I run gulp watch. Then after some actions these files are changed almost simultaneously and I have the following output in the console:

[gulp] Starting 'clean.styles'...
[gulp] Finished 'clean.styles' after 933 μs
[gulp] Starting 'styles'...
[gulp] Starting 'clean.styles'...
[gulp] Finished 'styles' after 567 ms
[gulp] Finished 'clean.styles' after 3.34 ms

So, as you can see, clean.styles task is called twice (for both styl files) and the styles task called only once what results in the absent public/styles directory.

[yocontra]

@robrich Did the old orchestrator make sure that dependencies were only executed once?

[robrich]

Dependencies: yes, actual watched task: no.

[carljm]

Is this the same underlying issue as #557?

[durango]

Also experiencing this on mac osx 10.9

[th0r]

@carljm Yes, I think this is the same bug.

[yocontra]

Rolling into #651