pin proper version for core in desktop
pin proper version for core in desktop

nteract/nteract,nteract/nteract,rgbkrk/nteract,nteract/nteract,jdfreder/nteract,rgbkrk/nteract,rgbkrk/nteract,nteract/composition,rgbkrk/nteract,nteract/composition,jdfreder/nteract,nteract/nteract,jdfreder/nteract,nteract/composition,rgbkrk/nteract,nteract/nteract,jdfreder/nteract