Package: libcxxtools-dev Version: 2.2.1-3 Severity: serious libcxxtools-dev depends on libstdc++-5-dev | libstdc++-dev, where libstdc++-5-dev is no longer available and libstdc++-dev is not a good virtual package to depend upon, since it is provided by multiple packages:
bullseye# apt-get install libstdc++-dev Reading package lists... Done Building dependency tree... Done Reading state information... Done Package libstdc++-dev is a virtual package provided by: libstdc++-9-dev 9.3.0-22 libstdc++-10-dev 10.2.1-6 You should explicitly select one to install. E: Package 'libstdc++-dev' has no installation candidate If apt has to choose, it may select the wrong one. Please see https://bugs.debian.org/984838 in libboost1.74-dev for more details and a possible solution. Andreas
