How to tell gulp to only collect one stylesheet?

Question

gulp.js

Hello.
I have been using the gulp collector for a long time, but then the question arose, is it possible for gulp to say that from all the style files that are given to it as input .src, it collects only those that have changed?
I have my own file with styles for each page, and when changing one, for some reason, everything is rebuilt. How to avoid it?
My css config

gulp
        .src('front/styles/*.styl')
        .pipe(plumber({errorHandler: errorHandler('Error in "styles" task')}))
        .pipe(gulpIf(isDebug, sourcemaps.init()))
        .pipe(
            stylus({
                use: [importIfExist(), autoprefixer()],
                'include css': true,
                define: {
                    // dev-mode variable for using in stylus
                    __DEV__: isDebug
                }
            })
        )
        .pipe(gulpIf(!isDebug, gcmq()))
        .pipe(gulpIf(!isDebug, nano({zindex: false, minifyFontValues: false, discardUnused: false})))
        .pipe(rename({suffix: '.min'}))
        .pipe(gulpIf(isDebug, sourcemaps.write()))
        .pipe(gulp.dest('public/assets/css'));