design-themes/theme_bookstore/data/ir_asset.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>
    <data>

        <record id="theme_bookstore.primary_variables_scss" model="theme.ir.asset">
            <field name="key">theme_bookstore.primary_variables_scss</field>
            <field name="name">Primary variables SCSS</field>
            <field name="bundle">web._assets_primary_variables</field>
            <field name="glob">theme_bookstore/static/src/scss/primary_variables.scss</field>
        </record>

        <record id="theme_bookstore.bootstrap_overridden_scss" model="theme.ir.asset">
            <field name="key">theme_bookstore.bootstrap_overridden_scss</field>
            <field name="name">Bootstrap overridden SCSS</field>
            <field name="bundle">web._assets_frontend_helpers</field>
            <field name="directive">prepend</field>
            <field name="glob">theme_bookstore/static/src/scss/bootstrap_overridden.scss</field>
        </record>

        <record id="theme_bookstore.compatibility_saas_11_4_variables_scss" model="theme.ir.asset">
            <field name="key">theme_bookstore.compatibility_saas_11_4_variables_scss</field>
            <field name="name">Compatibility saas 11 4 variables SCSS</field>
            <field name="bundle">web._assets_primary_variables</field>
            <field name="glob">/theme_bookstore/static/src/scss/compatibility-saas-11.4-variables.scss</field>
            <field name="active" eval="False"/>
        </record>

    </data>
</odoo>