portaltransforms-1.0.4 is the latest stable version and it has a dependency on pdftohtml. the latest stable version of poppler has a dependency on !pdftohtml. portaltransforms-1.0.4-r1 has the correct poppler || pdftohtml dependency. The dependencies on 1.0.4 should be fixed or 1.0.4-r1 should be marked stable.
This was fixed on Jan 26 by robbat2