If you want to try (on your own risk) the Disco Dingo version on Bionic where libxmltooling8 is built against libcurl4, then you can do this:


curl -L 'http://mirrors.kernel.org/ubuntu/pool/universe/x/xml-security-c/libxml-security-c20_2.0.2-3_amd64.deb' > libxml-security-c20_2.0.2-3_amd64.deb
curl -L 'http://mirrors.kernel.org/ubuntu/pool/universe/l/log4shib/liblog4shib2_2.0.0-2_amd64.deb' > liblog4shib2_2.0.0-2_amd64.deb
curl -L 'http://mirrors.kernel.org/ubuntu/pool/universe/x/xmltooling/libxmltooling8_3.0.4-1_amd64.deb' > libxmltooling8_3.0.4-1_amd64.deb
curl -L 'http://mirrors.kernel.org/ubuntu/pool/universe/s/shibboleth-sp/shibboleth-sp-common_3.0.4+dfsg1-1_all.deb' > shibboleth-sp-common_3.0.4+dfsg1-1_all.deb
curl -L 'http://mirrors.kernel.org/ubuntu/pool/universe/x/xmltooling/xmltooling-schemas_3.0.4-1_all.deb' > xmltooling-schemas_3.0.4-1_all.deb
curl -L 'http://mirrors.kernel.org/ubuntu/pool/universe/o/opensaml/opensaml-schemas_3.0.1-1_all.deb' > opensaml-schemas_3.0.1-1_all.deb
curl -L 'http://mirrors.kernel.org/ubuntu/pool/universe/s/shibboleth-sp/libshibsp8_3.0.4+dfsg1-1_amd64.deb' > libshibsp8_3.0.4+dfsg1-1_amd64.deb
curl -L 'http://mirrors.kernel.org/ubuntu/pool/main/k/krb5/libkrb5support0_1.17-1_amd64.deb' > libkrb5support0_1.17-1_amd64.deb
curl -L 'http://mirrors.kernel.org/ubuntu/pool/main/k/krb5/libkrb5-3_1.17-1_amd64.deb' > libkrb5-3_1.17-1_amd64.deb
curl -L 'http://mirrors.kernel.org/ubuntu/pool/main/k/krb5/libgssapi-krb5-2_1.17-1_amd64.deb' > libgssapi-krb5-2_1.17-1_amd64.deb
curl -L 'http://mirrors.kernel.org/ubuntu/pool/main/k/krb5/libkrb5-3_1.17-1_amd64.deb' > libkrb5-3_1.17-1_amd64.deb
curl -L 'http://mirrors.kernel.org/ubuntu/pool/universe/o/opensaml/libsaml10_3.0.1-1_amd64.deb' > libsaml10_3.0.1-1_amd64.deb
curl -L 'http://mirrors.kernel.org/ubuntu/pool/universe/s/shibboleth-sp/libshibsp-plugins_3.0.4+dfsg1-1_amd64.deb' > libshibsp-plugins_3.0.4+dfsg1-1_amd64.deb
curl -L 'http://mirrors.kernel.org/ubuntu/pool/main/i/init-system-helpers/init-system-helpers_1.56+nmu1_all.deb' > init-system-helpers_1.56+nmu1_all.deb
curl -L 'http://mirrors.kernel.org/ubuntu/pool/universe/s/shibboleth-sp/shibboleth-sp-utils_3.0.4+dfsg1-1_amd64.deb' > shibboleth-sp-utils_3.0.4+dfsg1-1_amd64.deb
curl -L 'http://mirrors.kernel.org/ubuntu/pool/universe/s/shibboleth-sp/shibboleth-sp2-common_3.0.4+dfsg1-1_all.deb' > shibboleth-sp2-common_3.0.4+dfsg1-1_all.deb
curl -L 'http://mirrors.kernel.org/ubuntu/pool/universe/x/xerces-c/libxerces-c3.2_3.2.2+debian-1build1_amd64.deb' > libxerces-c3.2_3.2.2+debian-1build1_amd64.deb
curl -L 'http://mirrors.kernel.org/ubuntu/pool/main/i/icu/libicu63_63.1-6_amd64.deb' > libicu63_63.1-6_amd64.deb
curl -L 'http://mirrors.kernel.org/ubuntu/pool/universe/s/shibboleth-sp/libapache2-mod-shib_3.0.4+dfsg1-1_amd64.deb' > libapache2-mod-shib_3.0.4+dfsg1-1_amd64.deb

apt-get install libcurl4 libxalan-c111 libodbc1 libmemcached11 libfcgi0ldbl
dpkg -i libxml-security-c20_2.0.2-3_amd64.deb
dpkg -i liblog4shib2_2.0.0-2_amd64.deb
dpkg -i libxmltooling8_3.0.4-1_amd64.deb
dpkg -i shibboleth-sp-common_3.0.4+dfsg1-1_all.deb
dpkg -i xmltooling-schemas_3.0.4-1_all.deb
dpkg -i opensaml-schemas_3.0.1-1_all.deb
dpkg -i libkrb5-3_1.17-1_amd64.deb
dpkg -i libkrb5support0_1.17-1_amd64.deb
dpkg -i libgssapi-krb5-2_1.17-1_amd64.deb
dpkg -i libshibsp8_3.0.4+dfsg1-1_amd64.deb
dpkg -i libkrb5-3_1.17-1_amd64.deb
dpkg -i libsaml10_3.0.1-1_amd64.deb
dpkg -i libshibsp8_3.0.4+dfsg1-1_amd64.deb
dpkg -i libshibsp-plugins_3.0.4+dfsg1-1_amd64.deb
dpkg -i libshibsp-plugins_3.0.4+dfsg1-1_amd64.deb
dpkg -i init-system-helpers_1.56+nmu1_all.deb
dpkg -i shibboleth-sp-utils_3.0.4+dfsg1-1_amd64.deb
dpkg -i shibboleth-sp2-common_3.0.4+dfsg1-1_all.deb
dpkg -i libicu63_63.1-6_amd64.deb
dpkg -i libxerces-c3.2_3.2.2+debian-1build1_amd64.deb
dpkg -i libapache2-mod-shib_3.0.4+dfsg1-1_amd64.deb