<===> inaccessible/nested/variable/input.scss
a {@import "other"}

b {c: $d}

<===> inaccessible/nested/variable/_other.scss
$d: e;

<===> inaccessible/nested/variable/error
Error: Undefined variable.
  ,
3 | b {c: $d}
  |       ^^
  '
  input.scss 3:7  root stylesheet

<===> inaccessible/nested/variable/error-libsass
Error: Undefined variable: "$d".
        on line 3:7 of input.scss
>> b {c: $d}

   ------^

<===>
================================================================================
<===> inaccessible/nested/mixin/input.scss
a {@import "other"}

b {@include c}

<===> inaccessible/nested/mixin/_other.scss
@mixin c() {d: e};

<===> inaccessible/nested/mixin/error
Error: Undefined mixin.
  ,
3 | b {@include c}
  |    ^^^^^^^^^^
  '
  input.scss 3:4  root stylesheet

<===> inaccessible/nested/mixin/error-libsass
Error: no mixin named c
        on line 3:13 of input.scss
>> b {@include c}

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

<===>
================================================================================
<===> inaccessible/nested/function/input.scss
a {@import "other"}

b {c: d()}

<===> inaccessible/nested/function/_other.scss
@function d() {@return e}

<===> inaccessible/nested/function/output.css
b {
  c: d();
}