O pacote mysql-server-5.7 ainda não está configurado

Eu tentei tudo de relevante que posso encontrar dentro desta resposta

Mas nada para mim até agora resolveu esse problema. Eu nunca tive o mysql instalado com sucesso. Como eu tentei instalar phpmyadminantes de instalar o mysql, o que significava que eu abortei a phpadmininstalação e, estranhamente, durante a minha mysql-serverinstalação, a phpmyadmintela de confirmação apareceu.

Então é uma bagunça: D

hutber@hutber:~$ ps -ef | grep mysql
999       3952  3925  0 12:51 ?        00:00:36 mysqld
hutber   27307 27070  0 23:56 pts/2    00:00:00 grep --color=auto mysql

hutber@hutber:~$ sudo apt-get purge mysql*
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Note, selecting 'mysqltcl' for glob 'mysql*'
Note, selecting 'mysql-workbench' for glob 'mysql*'
Note, selecting 'mysql-client-5.5' for glob 'mysql*'
Note, selecting 'mysql-client-5.6' for glob 'mysql*'
Note, selecting 'mysql-client-5.7' for glob 'mysql*'
Note, selecting 'mysql-common-5.6' for glob 'mysql*'
Note, selecting 'mysql-server-5.0' for glob 'mysql*'
Note, selecting 'mysql-server-5.1' for glob 'mysql*'
Note, selecting 'mysql-server-5.5' for glob 'mysql*'
Note, selecting 'mysql-server-5.6' for glob 'mysql*'
Note, selecting 'mysql-server-5.7' for glob 'mysql*'
Note, selecting 'mysql-utilities' for glob 'mysql*'
Note, selecting 'mysql-testsuite' for glob 'mysql*'
Note, selecting 'mysql-server' for glob 'mysql*'
Note, selecting 'mysql-client' for glob 'mysql*'
Note, selecting 'mysql-sandbox' for glob 'mysql*'
Note, selecting 'mysql-client-core-5.5' for glob 'mysql*'
Note, selecting 'mysql-client-core-5.6' for glob 'mysql*'
Note, selecting 'mysql-client-core-5.7' for glob 'mysql*'
Note, selecting 'mysql-testsuite-5.5' for glob 'mysql*'
Note, selecting 'mysql-testsuite-5.6' for glob 'mysql*'
Note, selecting 'mysql-testsuite-5.7' for glob 'mysql*'
Note, selecting 'mysql-common' for glob 'mysql*'
Note, selecting 'mysqltuner' for glob 'mysql*'
Note, selecting 'mysql-workbench-data' for glob 'mysql*'
Note, selecting 'mysql-server-core-5.1' for glob 'mysql*'
Note, selecting 'mysql-server-core-5.5' for glob 'mysql*'
Note, selecting 'mysql-server-core-5.6' for glob 'mysql*'
Note, selecting 'mysql-server-core-5.7' for glob 'mysql*'
Note, selecting 'mysql-source-5.7' for glob 'mysql*'
Package 'mysql-client-5.5' is not installed, so not removed
Package 'mysql-client-5.6' is not installed, so not removed
Package 'mysql-server-core-5.6' is not installed, so not removed
Package 'mysql-client-core-5.5' is not installed, so not removed
Package 'mysql-client-core-5.6' is not installed, so not removed
Note, selecting 'mysql-common' instead of 'mysql-common-5.6'
Package 'mysql-server-5.5' is not installed, so not removed
Package 'mysql-server-5.6' is not installed, so not removed
Package 'mysql-server-core-5.5' is not installed, so not removed
Package 'mysql-testsuite-5.5' is not installed, so not removed
Package 'mysql-testsuite-5.6' is not installed, so not removed
Package 'mysql-server-5.0' is not installed, so not removed
Package 'mysql-server-5.1' is not installed, so not removed
Package 'mysql-server-core-5.1' is not installed, so not removed
Package 'mysql-common' is not installed, so not removed
Package 'mysql-sandbox' is not installed, so not removed
Package 'mysql-utilities' is not installed, so not removed
Package 'mysql-workbench' is not installed, so not removed
Package 'mysql-workbench-data' is not installed, so not removed
Package 'mysqltcl' is not installed, so not removed
Package 'mysqltuner' is not installed, so not removed
Package 'mysql-client' is not installed, so not removed
Package 'mysql-client-5.7' is not installed, so not removed
Package 'mysql-client-core-5.7' is not installed, so not removed
Package 'mysql-server' is not installed, so not removed
Package 'mysql-server-5.7' is not installed, so not removed
Package 'mysql-server-core-5.7' is not installed, so not removed
Package 'mysql-source-5.7' is not installed, so not removed
Package 'mysql-testsuite' is not installed, so not removed
Package 'mysql-testsuite-5.7' is not installed, so not removed
The following package was automatically installed and is no longer required:
  libevent-core-2.1-6
Use 'sudo apt autoremove' to remove it.
0 to upgrade, 0 to newly install, 0 to remove and 0 not to upgrade.
hutber@hutber:~$ sudo apt-get autoremove
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages will be REMOVED
  libevent-core-2.1-6
0 to upgrade, 0 to newly install, 1 to remove and 0 not to upgrade.
After this operation, 251 kB disk space will be freed.
Do you want to continue? [Y/n] y
(Reading database ... 342618 files and directories currently installed.)
Removing libevent-core-2.1-6:amd64 (2.1.8-stable-4build1) ...
Processing triggers for libc-bin (2.27-3ubuntu1) ...
hutber@hutber:~$ sudo apt-get autoclean
Reading package lists... Done
Building dependency tree       
Reading state information... Done
hutber@hutber:~$ sudo apt-get install mysql-server --fix-missing --fix-broken
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  libevent-core-2.1-6 mysql-client-5.7 mysql-client-core-5.7 mysql-common mysql-server-5.7 mysql-server-core-5.7
Suggested packages:
  mailx tinyca
Recommended packages:
  libhtml-template-perl
The following NEW packages will be installed
  libevent-core-2.1-6 mysql-client-5.7 mysql-client-core-5.7 mysql-common mysql-server mysql-server-5.7 mysql-server-core-5.7
0 to upgrade, 7 to newly install, 0 to remove and 0 not to upgrade.
Need to get 0 B/20.4 MB of archives.
After this operation, 160 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Preconfiguring packages ...
Selecting previously unselected package mysql-common.
(Reading database ... 342614 files and directories currently installed.)
Preparing to unpack .../mysql-common_5.8+1.0.4_all.deb ...
Unpacking mysql-common (5.8+1.0.4) ...
Selecting previously unselected package mysql-client-core-5.7.
Preparing to unpack .../mysql-client-core-5.7_5.7.27-0ubuntu0.18.04.1_amd64.deb ...
Unpacking mysql-client-core-5.7 (5.7.27-0ubuntu0.18.04.1) ...
Selecting previously unselected package mysql-client-5.7.
Preparing to unpack .../mysql-client-5.7_5.7.27-0ubuntu0.18.04.1_amd64.deb ...
Unpacking mysql-client-5.7 (5.7.27-0ubuntu0.18.04.1) ...
Selecting previously unselected package mysql-server-core-5.7.
Preparing to unpack .../mysql-server-core-5.7_5.7.27-0ubuntu0.18.04.1_amd64.deb ...
Unpacking mysql-server-core-5.7 (5.7.27-0ubuntu0.18.04.1) ...
Selecting previously unselected package libevent-core-2.1-6:amd64.
Preparing to unpack .../libevent-core-2.1-6_2.1.8-stable-4build1_amd64.deb ...
Unpacking libevent-core-2.1-6:amd64 (2.1.8-stable-4build1) ...
Setting up mysql-common (5.8+1.0.4) ...
update-alternatives: using /etc/mysql/my.cnf.fallback to provide /etc/mysql/my.cnf (my.cnf) in auto mode
Selecting previously unselected package mysql-server-5.7.
(Reading database ... 342775 files and directories currently installed.)
Preparing to unpack .../mysql-server-5.7_5.7.27-0ubuntu0.18.04.1_amd64.deb ...
Unpacking mysql-server-5.7 (5.7.27-0ubuntu0.18.04.1) ...
Selecting previously unselected package mysql-server.
Preparing to unpack .../mysql-server_5.7.27-0ubuntu0.18.04.1_all.deb ...
Unpacking mysql-server (5.7.27-0ubuntu0.18.04.1) ...
Setting up libevent-core-2.1-6:amd64 (2.1.8-stable-4build1) ...
Setting up mysql-server-core-5.7 (5.7.27-0ubuntu0.18.04.1) ...
Setting up mysql-client-core-5.7 (5.7.27-0ubuntu0.18.04.1) ...
Setting up mysql-client-5.7 (5.7.27-0ubuntu0.18.04.1) ...
Setting up mysql-server-5.7 (5.7.27-0ubuntu0.18.04.1) ...
update-alternatives: using /etc/mysql/mysql.cnf to provide /etc/mysql/my.cnf (my.cnf) in auto mode
Renaming removed key_buffer and myisam-recover options (if present)
dpkg: error processing package mysql-server-5.7 (--configure):
 installed mysql-server-5.7 package post-installation script subprocess returned error exit status 1
No apport report written because the error message indicates it's a follow-up error from a previous failure.
                                                                                                            dpkg: dependency problems prevent configuration of mysql-server:
 mysql-server depends on mysql-server-5.7; however:
  Package mysql-server-5.7 is not configured yet.

dpkg: error processing package mysql-server (--configure):
 dependency problems - leaving unconfigured
Processing triggers for libc-bin (2.27-3ubuntu1) ...
Processing triggers for systemd (237-3ubuntu10.29) ...
Processing triggers for man-db (2.8.3-2ubuntu0.1) ...
Processing triggers for ureadahead (0.100.0-21) ...
Errors were encountered while processing:
 mysql-server-5.7
 mysql-server
E: Sub-process /usr/bin/dpkg returned an error code (1)

Editar 2

hutber@hutber:~$ sudo apt install mysql-server-5.7 phpmyadmin --reinstall
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  dbconfig-common dbconfig-mysql libjs-sphinxdoc libjs-underscore php php-php-gettext php-phpseclib php7.2
Suggested packages:
  php-libsodium php-mcrypt php-gmp
Recommended packages:
  javascript-common php-gd php-bz2 php-zip php-tcpdf
The following NEW packages will be installed
  dbconfig-common dbconfig-mysql libjs-sphinxdoc libjs-underscore php php-php-gettext php-phpseclib php7.2 phpmyadmin
0 to upgrade, 9 to newly install, 1 reinstalled, 0 to remove and 0 not to upgrade.
2 not fully installed or removed.
Need to get 0 B/4,813 kB of archives.
After this operation, 28.4 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
E: Internal Error, No file name for mysql-server-5.7:amd64```

Abra o terminal e digite:

sudo dpkg --configure -a # instrua o dpkg a "consertar" a si mesmo 
sudo apt-get -f install # corrija dependências e continue a configurar seus pacotes 
sudo apt install mysql-server-5.7 phpmyadmin --reinstall

Em relação à E: Internal Error, No file name for mysql-server-5.7:amd64mensagem de erro, procure as respostas para E: Erro Interno, Nenhum nome de arquivo para mysql-server-5.7: amd64 .