CL-USER> (mapcar #'directory-namestring (cl-fad:list-directory "C:/Qt/4.8.7/plugins"))
("/Qt/4.8.7/plugins/accessible/" "/Qt/4.8.7/plugins/bearer/"
 "/Qt/4.8.7/plugins/codecs/" "/Qt/4.8.7/plugins/designer/"
 "/Qt/4.8.7/plugins/graphicssystems/" "/Qt/4.8.7/plugins/iconengines/"
 "/Qt/4.8.7/plugins/imageformats/" "/Qt/4.8.7/plugins/phonon_backend/"
 "/Qt/4.8.7/plugins/qmltooling/" "/Qt/4.8.7/plugins/sqldrivers/")
CL-USER>