$color: var(--primary-default) is not a color

[artepic]

Is this a regression?

• Yes, this behavior used to work in the previous version

The previous version in which this bug was not present was

No response

Description

SassError: $color: var(--primary-default) is not a color.
╷
16 │ track-color: color.adjust(mdc-theme-color.prop-value($color), $alpha: -0.75),
│ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Reproduction

Steps to reproduce:

$theme-primary: (
default: var(--primary-default),
...
...
);

$my-theme: (
primary: $theme-primary,
...
...
...
);

@include mat.all-component-themes($my-theme);

after short inspection, generated by:
@include progress-bar-theme.theme($theme-or-color-config);

Expected Behavior

supported var(--xyz)

Actual Behavior

Compiled with problems

Environment

• Angular: 15
• CDK/Material: 15
• Browser(s):
• Operating System (e.g. Windows, macOS, Ubuntu):

[crisbeto]

Duplicate of #25981.

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