Debian – Package libthesql++-dev is not found in Debian buster/sid

aptdebian

I am trying to install libmysql++-dev on my Debian server, but I am getting the below error "Unable to locate the package".

root@rs-dal-karthik-test:~# apt-cache search libmysql++-dev
root@rs-dal-karthik-test:~# apt-get install libmysql++-dev
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package libmysql++-dev
E: Couldn't find any package by regex 'libmysql++-dev'

I updated my /etc/apt/sources.list as below:

root@rs-dal-karthik-test:~# cat /etc/apt/sources.list
deb http://mirror.rackspace.com/debian buster main contrib non-free
deb-src http://mirror.rackspace.com/debian buster main contrib non-free

deb http://mirror.rackspace.com/debian-security/ buster/updates main contrib non-free
deb-src http://mirror.rackspace.com/debian-security/ buster/updates main contrib non-free
root@rs-dal-karthik-test:~#

I ran apt-get upgrade after updating the sources.list file, but nothing seems to be working.

The official Debian buster/sid link has the package information https://packages.debian.org/sid/libmysql++-dev.

Below are the OS details:

root@rs-dal-karthik-test:~# cat /etc/os-release 
PRETTY_NAME="Debian GNU/Linux buster/sid"
NAME="Debian GNU/Linux"
ID=debian
HOME_URL="https://www.debian.org/"
SUPPORT_URL="https://www.debian.org/support"
BUG_REPORT_URL="https://bugs.debian.org/"
root@rs-dal-karthik-test:~#

I am not sure how to install the package on my server.

Edited
As mentioned in the comments below, updating the set of outputs after modifying the sources.list

root@rs-dal-karthik-test:~# cat /etc/apt/sources.list
deb http://mirror.rackspace.com/debian buster main contrib non-free
deb-src http://mirror.rackspace.com/debian buster main contrib non-free

deb http://mirror.rackspace.com/debian-security/ buster/updates main contrib non-free
deb-src http://mirror.rackspace.com/debian-security/ buster/updates main contrib non-free

deb http://ftp.us.debian.org/debian unstable main contrib non-free
deb http://ftp.us.debian.org/debian testing main contrib non-free
root@rs-dal-karthik-test:~# apt-get upgrade
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Calculating upgrade... Done
The following packages were automatically installed and are no longer required:
  gir1.2-glib-2.0 libgirepository-1.0-1 libjs-sphinxdoc libjs-underscore libpython-all-dev python-all python-all-dev python-asn1crypto python-cffi-backend python-configparser python-crypto python-cryptography python-dbus
  python-entrypoints python-enum34 python-gi python-idna python-ipaddress python-keyring python-keyrings.alt python-pip-whl python-secretstorage python-six python-wheel python-xdg
Use 'apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
root@rs-dal-karthik-test:~# apt-get install libmysql++-dev
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package libmysql++-dev
E: Couldn't find any package by regex 'libmysql++-dev'
root@rs-dal-karthik-test:~#

Best Answer

Your repositories only reference Buster, and the mysql++ set of packages isn’t part of Buster, because the packaging is buggy (see #871302 and #919377).

The best practices for testing users recommend configuring both testing (Buster currently) and unstable repositories, so that you can install packages from unstable when they’re not in testing. That does create the possibility that you’ll install buggy software though, as would be the case here.

I wouldn’t recommend running testing on a server, especially just now — testing is frozen in preparation for the next release of Debian, so updates (including security fixes) are liable to take longer than usual to be made available there.

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