Better CSS-in-JS nesting formatting?

Prettier 1.12.1
Playground link

Input:

const foo = css`
  color: red;
  background: yellow;

  ${bool && css`
    border: 1px solid blue;
    
    ${bool2 && css`
      padding: 20px;
    `}
  `}
`;

Output:

const foo = css`
  color: red;
  background: yellow;

  ${bool &&
    css`
      border: 1px solid blue;

      ${bool2 &&
        css`
          padding: 20px;
        `};
    `};
`;

Expected behavior:

The code, in my opinion, would be way cleaner if formatted as in the input section.

Reproduce the nested CSS-in-JS example using the linked Playground and compare the shown input and output. Trace the formatter entry point responsible for embedded CSS-in-JS and determine whether the expected input-style nesting can be supported; done means the example formats as requested with regression coverage.