Please remove src:mysql-5.7 from the archive

mysql-client and mysql-server are provided by src:mysql-8.0.

For sysbench, see https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=906982 - I believe removal of the armhf build from the release pocket should suffice to bring us in line with Debian. This needs addressing before this removal of src:mysql-5.7.

For the other reverse dependencies that mention 5.7 directly, alternatives available that are provided by src:mysql-8.0. tcl8.6-tdbc-mysql is interesting: by use of dlopen(), multiple ABIs are supported at once, including the src:mysql-8.0 successor libmysqlclient21 and dependency alternatives are correctly declared.

$ reverse-depends src:mysql-5.7
Reverse-Recommends
==================
* bley (for mysql-client)
* icinga-idoutils (for mysql-client)
* moodle (for mysql-server)

Reverse-Depends
===============
* akonadi-backend-mysql (for mysql-server-core-5.7)
* akonadi-backend-mysql (for mysql-client-core-5.7)
* automysqlbackup (for mysql-client)
* beancounter (for mysql-client)
* default-libmysqlclient-dev (for libmysqlclient-dev)
* kannel-dev (for libmysqlclient-dev)
* libmysqlclient21 (for mysql-common)
* lyricue (for mysql-server)
* mariadb-common (for mysql-common)
* moodle (for mysql-client)
* mysql-client-8.0 (for mysql-common)
* mysql-server-8.0 (for mysql-common)
* mythexport (for mysql-client)
* mythimport (for mysql-client)
* mythtv (for mysql-server-5.7)
* mythtv-backend-master (for mysql-server-5.7)
* mythtv-common (for mysql-client-5.7)
* mythtv-database (for mysql-client-5.7)
* octopussy (for mysql-server)
* opendnssec-enforcer-mysql (for mysql-client)
* percona-xtrabackup-test (for mysql-client)
* percona-xtradb-cluster-server-5.7 (for mysql-common)
* percona-xtradb-cluster-server-5.7 (for mysql-client)
* postgresql-11-mysql-fdw (for libmysqlclient-dev)
* sysbench [amd64 arm64 i386 ppc64el] (for libmysqlclient20)
* tcl8.6-tdbc-mysql (for libmysqlclient20)

Packages without architectures listed are reverse-dependencies in: amd64, arm64, armhf, i386, ppc64el, s390x

Removing packages from eoan-proposed:
 sysbench 1.0.15+ds-1build1 in eoan armhf
Comment: ANAIS
1 package successfully removed.

Removing packages from eoan:
 mysql-5.7 5.7.27-0ubuntu2 in eoan
  libmysqlclient20 5.7.27-0ubuntu2 in eoan amd64
  libmysqlclient20 5.7.27-0ubuntu2 in eoan arm64
  libmysqlclient20 5.7.27-0ubuntu2 in eoan armhf
  libmysqlclient20 5.7.27-0ubuntu2 in eoan i386
  libmysqlclient20 5.7.27-0ubuntu2 in eoan ppc64el
  libmysqlclient20 5.7.27-0ubuntu2 in eoan s390x
  libmysqld-dev 5.7.27-0ubuntu2 in eoan amd64
  libmysqld-dev 5.7.27-0ubuntu2 in eoan arm64
  libmysqld-dev 5.7.27-0ubuntu2 in eoan armhf
  libmysqld-dev 5.7.27-0ubuntu2 in eoan i386
  libmysqld-dev 5.7.27-0ubuntu2 in eoan ppc64el
  libmysqld-dev 5.7.27-0ubuntu2 in eoan s390x
  mysql-client 5.7.27-0ubuntu2 in eoan amd64
  mysql-client 5.7.27-0ubuntu2 in eoan arm64
  mysql-client 5.7.27-0ubuntu2 in eoan armhf
  mysql-client 5.7.27-0ubuntu2 in eoan i386
  mysql-client 5.7.27-0ubuntu2 in eoan ppc64el
  mysql-client 5.7.27-0ubuntu2 in eoan s390x
  mysql-client-5.7 5.7.27-0ubuntu2 in eoan amd64
  mysql-client-5.7 5.7.27-0ubuntu2 in eoan arm64
  mysql-client-5.7 5.7.27-0ubuntu2 in eoan armhf
  mysql-client-5.7 5.7.27-0ubuntu2 in eoan i386
  mysql-client-5.7 5.7.27-0ubuntu2 in eoan ppc64el
  mysql-client-5.7 5.7.27-0ubuntu2 in eoan s390x
  mysql-client-core-5.7 5.7.27-0ubuntu2 in eoan amd64
  mysql-client-core-5.7 5.7.27-0ubuntu2 in eoan arm64
  mysql-client-core-5.7 5.7.27-0ubuntu2 in eoan armhf
  mysql-client-core-5.7 5.7.27-0ubuntu2 in eoan i386
  mysql-client-core-5.7 5.7.27-0ubuntu2 in eoan ppc64el
  mysql-client-core-5.7 5.7.27-0ubuntu2 in eoan s390x
  mysql-server 5.7.27-0ubuntu2 in eoan amd64
  mysql-server 5.7.27-0ubuntu2 in eoan arm64
  mysql-server 5.7.27-0ubuntu2 in eoan armhf
  mysql-server 5.7.27-0ubuntu2 in eoan i386
  mysql-server 5.7.27-0ubuntu2 in eoan ppc64el
  mysql-server 5.7.27-0ubuntu2 in eoan s390x
  mysql-server-5.7 5.7.27-0ubuntu2 in eoan amd64
  mysql-server-5.7 5.7.27-0ubuntu2 in eoan arm64
  mysql-server-5.7 5.7.27-0ubuntu2 in eoan armhf
  mysql-server-5.7 5.7.27-0ubuntu2 in eoan i386
  mysql-server-5.7 5.7.27-0ubuntu2 in eoan ppc64el
  mysql-server-5.7 5.7.27-0ubuntu2 in eoan s390x
  mysql-server-core-5.7 5.7.27-0ubuntu2 in eoan amd64
  mysql-server-core-5.7 5.7.27-0ubuntu2 in eoan arm64
  mysql-server-core-5.7 5.7.27-0ubuntu2 in eoan armhf
  mysql-server-core-5.7 5.7.27-0ubuntu2 in eoan i386
  mysql-server-core-5.7 5.7.27-0ubuntu2 in eoan ppc64el
  mysql-server-core-5.7 5.7.27-0ubuntu2 in eoan s390x
  mysql-source-5.7 5.7.27-0ubuntu2 in eoan amd64
  mysql-source-5.7 5.7.27-0ubuntu2 in eoan arm64
  mysql-source-5.7 5.7.27-0ubuntu2 in eoan armhf
  mysql-source-5.7 5.7.27-0ubuntu2 in eoan i386
  mysql-source-5.7 5.7.27-0ubuntu2 in eoan ppc64el
  mysql-source-5.7 5.7.27-0ubuntu2 in eoan s390x
  mysql-testsuite 5.7.27-0ubuntu2 in eoan amd64
  mysql-testsuite 5.7.27-0ubuntu2 in eoan arm64
  mysql-testsuite 5.7.27-0ubuntu2 in eoan armhf
  mysql-testsuite 5.7.27-0ubuntu2 in eoan i386
  mysql-testsuite 5.7.27-0ubuntu2 in eoan ppc64el
  mysql-testsuite 5.7.27-0ubuntu2 in eoan s390x
  mysql-testsuite-5.7 5.7.27-0ubuntu2 in eoan amd64
  mysql-testsuite-5.7 5.7.27-0ubuntu2 in eoan arm64
  mysql-testsuite-5.7 5.7.27-0...

Is there any way to upgrade from Ubuntu 19.04 to Ubuntu 19.10 while keeping MySQL 5.7 ?
I have this requirement as some applications I use are incompatible with MySQL 8.