Followup-For: Bug #863675 And another conflict:
Preparing to unpack .../libmariadb-dev_1%3a10.3.11-1~exp2_amd64.deb ... Unpacking libmariadb-dev:amd64 (1:10.3.11-1~exp2) ... dpkg: error processing archive /var/cache/apt/archives/libmariadb-dev_1%3a10.3.11-1~exp2_amd64.deb (--unpack): trying to overwrite '/usr/lib/x86_64-linux-gnu/libmysqlservices.a', which is also in package libmysqld-dev 5.7.24-2 Errors were encountered while processing: /var/cache/apt/archives/libmariadb-dev_1%3a10.3.11-1~exp2_amd64.deb Andreas