The ebuild installs tools and .jar from the upstream package which all have different licenses which are not at all listed in the LICENSE field. It is also not clear, from where the assumption of this being BSD licensed is coming from. A grep over the installed files reveals no relevant relation. /usr/share/sgml/docbook/xsl-ns-stylesheets/tools/bin/docbook-xsl-update /usr/share/sgml/docbook/xsl-ns-stylesheets/tools/lib/ant-contrib-1.0b3.jar /usr/share/sgml/docbook/xsl-ns-stylesheets/tools/lib/calabash.jar /usr/share/sgml/docbook/xsl-ns-stylesheets/tools/lib/commons-codec-1.3.jar /usr/share/sgml/docbook/xsl-ns-stylesheets/tools/lib/commons-httpclient-3.1.jar /usr/share/sgml/docbook/xsl-ns-stylesheets/tools/lib/commons-logging-1.1.1.jar /usr/share/sgml/docbook/xsl-ns-stylesheets/tools/lib/isorelax.jar /usr/share/sgml/docbook/xsl-ns-stylesheets/tools/lib/jing.jar /usr/share/sgml/docbook/xsl-ns-stylesheets/tools/lib/jython.jar /usr/share/sgml/docbook/xsl-ns-stylesheets/tools/lib/saxon.jar /usr/share/sgml/docbook/xsl-ns-stylesheets/tools/lib/saxon9-ant.jar /usr/share/sgml/docbook/xsl-ns-stylesheets/tools/lib/saxon9he.jar /usr/share/sgml/docbook/xsl-ns-stylesheets/tools/lib/xalan.jar /usr/share/sgml/docbook/xsl-ns-stylesheets/tools/lib/xercesImpl.jar /usr/share/sgml/docbook/xsl-ns-stylesheets/tools/lib/xml-apis.jar /usr/share/sgml/docbook/xsl-ns-stylesheets/tools/lib/xmlresolver.jar (list is likely incomplete) The upstream package also supplies the corresponding license files: /usr/share/sgml/docbook/xsl-ns-stylesheets/tools/licenses/jing/copying.html /usr/share/sgml/docbook/xsl-ns-stylesheets/tools/licenses/jing/isorelax.copying.txt /usr/share/sgml/docbook/xsl-ns-stylesheets/tools/licenses/jing/xerces.copying.txt /usr/share/sgml/docbook/xsl-ns-stylesheets/tools/licenses/saxon/CERN.txt /usr/share/sgml/docbook/xsl-ns-stylesheets/tools/licenses/saxon/JAMESCLARK.txt /usr/share/sgml/docbook/xsl-ns-stylesheets/tools/licenses/saxon/LEGAL.txt /usr/share/sgml/docbook/xsl-ns-stylesheets/tools/licenses/saxon/LICENSE.txt /usr/share/sgml/docbook/xsl-ns-stylesheets/tools/licenses/saxon/THAI.txt /usr/share/sgml/docbook/xsl-ns-stylesheets/tools/licenses/saxon/UNICODE.txt (list is likely incomplete) As it is, it is dangerous to rely on the license information of the ebuild. Reproducible: Always