gulp-stylus -> gulp-progeny fails with progeny attempting to parse non-existant .css files about gulp-progeny

[HerringtonDarkholme]

Can you provide example configuration? I'm sorry I cannot understand your problem.
I use gulp-progeny and gulp-stylus every day and nothing seems go wrong.

[mogelbrod]

Sure!

mkdir test
cd test
mkdir styles

package.json:

{
  "name": "test",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "gulp": "^3.9.0",
    "gulp-cached": "^1.1.0",
    "gulp-progeny": "^0.1.2",
    "gulp-rename": "^1.2.2",
    "gulp-stylus": "^2.0.6",
    "livescript": "^1.4.0"
  }
}

gulpfile.ls: (LiveScript, hope that's okay)

require! <[ gulp gulp-stylus gulp-progeny gulp-rename ]>

gulp.task \failing, ->
  gulp.src ['**/*.styl'], cwd: \styles
    .pipe gulp-stylus!
    .pipe gulp-progeny!
    .pipe gulp.dest \build

gulp.task \working, ->
  gulp.src ['**/*.styl'], cwd: \styles
    .pipe gulp-stylus!
    .pipe gulp-rename extname: \.styl
    .pipe gulp-progeny!
    .pipe gulp-rename extname: \.css
    .pipe gulp.dest \build

gulp.task \default, <[ failing ]>

styles/index.styl:

body
  background: green

Run the test cases:

npm install
gulp failing # Should throw "Error: no writecb in Transform class"
gulp working # Should work

[HerringtonDarkholme]

Oops, I think progeny should go before stylus. Just like the #example.

Internally progeny checks whether dependency files exists, but if the file is provided by gulp, it skip checking.

[mogelbrod]

Haha, what a dumb mistake by me :D
Thanks for pointing it out, and for the quick replies!