Windows error runing via gulp: Potentially unhandled rejection [2] Error: ENOENT, $stdin about less-plugin-clean-css HOT 12 CLOSED

Sorry, no ideas!
Possibly something to do with sourcemaps? if you take that out and leave the plugin in, does it work?

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I'm experiencing the same error in Windows. If either sourcemaps or clean-css is removed, then it works. Also, in the Less I've place a multi-line comment at the top. If this comment is removed or changed to be a single line comment, then everything works.

/*
Test
*/
.test {color:red;}

Here is a simple gist with the code I'm using:
https://gist.github.com/Kruegs/3b4b720f9fe36f1d6532

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Does this help anyhow, guys? clean-css/clean-css#593 (comment)

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@jakubpawlowicz There's exactly the same problem with less-plugin-autoprefix (see the referenced issue above). So aparently it's some weird incompatibility in how gulp-less and these plugins handle sourcemaps but it's hard to say for sure w/o deeper tests/debugging (unfortunately it looks like neither @lukeapage nor me actually use gulp so it may take for a while until we'll get to this to investigate... Unless someone else would be so kind to take it. :)

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I use gulp in some projects with less-plugin-clean-css and autoprefix on windows, and haven't had any problems. then again I haven't switched on sourcemaps either as they don't need it yet.

I suspect the problem is that gulp uses streams - which should be fine since the gulp-plugin can wrap less and use it like an asynchronous stream. I've reviewed this plugin and less.js and I can't see anywhere that less-node write the sourcemap - its only done by lessc, so that means it's either gulp, gulp-less, clean-css or the sourcemaps code.

Someone who gets the error needs to debug, but it doesn't look to me like less is doing anything incompatible.

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for the interested, clean-css/clean-css#593 has part of an analysis, @jakubpawlowicz will investigate next

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Same error here, removing the less plugins or sourcemaps makes it work again.

For now, I'm enabling one or the other depending if it's for debug or release

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Getting similar issue on windows only. any updates?

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@seven-phases-max I have some knowledge of gulp, although like everyone else here, I'm limited on time.

I wonder what it would take for Less to simply be Gulp-compatible, which would eliminate the need for gulp-less and alleviate some of the back and forth of an issue like this.

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to be clear, this is a clean css issue and needs ti be investigated and fixed there. see the linked issue above.

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Ah.

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I'm seeing it without gulp-clean-css, just using gulp-sourcemaps together with gulp-less is enough.

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