Failure to compile SASS

[aleksanderkrauze]

Bug Report

Zola seems to have a problem with compiling SASS. More specifically it can't refer to variable defined in another SASS module.
When I try to do that I get the following error message and building of the site fails:

Error: Error: Invalid CSS after "...r: gruvbox-dark": expected expression (e.g. 1px, bold), was ".$background;"
        on line 3:33 of sass/style.scss
>> $background-colour: gruvbox-dark.$background;

   --------------------------------^

Zola version: 0.15.3

Step to reproduce

Here is my code.

File sass/_gruvbox-dark.scss:

$background: #282828;

File sass/style.scss:

@use 'gruvbox-dark';

$background-colour: gruvbox-dark.$background;

body {
	background-color: $background-colour;
}

[aleksanderkrauze]

Bonus bug. In the error message phrase Error: occurs two times, which is definitely not intended.

[Keats]

Zola is using Libsass which does not support that feature.

I'm planning to switch to another Sass implementation (#1535) when they are ready - it might be for 0.17 I'm not sure yet I haven't tried them.

[Keats]

Closing as it will be handed by the issue mentioned above and no actionable thing to do right now for Zola.