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CSS

Posted by Alex Cawley
Alex Cawley
9,291 Points

sass Errors in the console

I have been trying to learn sass but I have been getting some errors that are preventing me from learning on the very first stage. I have tried researching and finding answers but nothing has been working. Basically when i run the watch command I get this error

>>> Sass is watching for changes. Press Ctrl-C to stop.
LoadError: no such file to load -- rb-fsevent
  Use --trace for backtrace.

So I figured I just didnt have the rb-fsevent file so I ran the command

gem install rb-fsevent

and got another error

ERROR:  While executing gem ... (Gem::FilePermissionError)
    You don't have write permissions for the /Library/Ruby/Gems/2.0.0 directory.

I have no idea how I would fix this one so Im just looking for some advice on how to fix this. thanks!

3 Answers

Chris Shaw
Chris Shaw
26,676 Points
Chris Shaw
Chris Shaw
26,676 Points

Hi Alex,

Generally on OS X you need to run gem commands as sudo as Ruby stores the cache folders under a different permission set to your user.

Alex Cawley
Alex Cawley
9,291 Points

I just tried this and it says the the gem is installed successfully but then I reran the watch command and I am still getting the error.

Chris Shaw
Chris Shaw
26,676 Points
Chris Shaw
Chris Shaw
26,676 Points

Try running watch as sudo too, some gems require extra permission to access files which I've seen on my Macbook.

Alex Cawley
Alex Cawley
9,291 Points

That still returns the error. Is there anyway that I can change the permissions for the folder with the gems in the second error?

Chris Shaw
Chris Shaw
26,676 Points
Chris Shaw
Chris Shaw
26,676 Points

What is the command you're running?

Alex Cawley
Alex Cawley
9,291 Points

I'm not sure which one you want so here are two. For the sudo one you just recommended I did

sudo sass --watch .

and for the one giving me the error for permissions I'm running

gem install rb-fsevent

Chris Shaw
Chris Shaw
26,676 Points
Chris Shaw
Chris Shaw
26,676 Points

The sass --watch command requires an input file and an output file, for example.

sass --watch input.scss:output.css
Alex Cawley
Alex Cawley
9,291 Points

It still gives me the rb-fsevent error, with and without the sudo

Alex Cawley
Alex Cawley
9,291 Points

https://www.youtube.com/watch?v=wLNr6DfF_YE

Here is a quick video I made a while ago when I first tried to figure out the problem. This is a little older so I am still doing the same thing as I am in the video except I now have Mavericks and I add the sudo to the command. Do you see anything wrong?