why are things still requiring libssl1.0.0, when bionic ships with libssl1.1?

Asked by Michael Richardson on 2018-08-12

In a mostly empty ubuntu bionic container:

root@mud-controller:~# apt-get install openssh-server
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
  libssl1.0.0 libxmuu1 ncurses-term openssh-client openssh-sftp-server python3-certifi python3-chardet python3-idna

yet, libssl1.1 is shipping with bionic. This seems like a packaging dependancy mistake.
Maybe there is a reason for this?

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M y guess is that the libssl-dev for 1.0.0 is installed, rather than libssl-dev for 1.1.0.

Manfred Hampl (m-hampl) said : #2

Bionic provides both, libssl1.0.0 https://launchpad.net/ubuntu/+source/openssl1.0 and libssl1.1 https://launchpad.net/ubuntu/+source/openssl

Apparently not all programs using functionality from these libraries have already been converted to use the newer one.

The correct target for such question would be openssh-server, not openssl/openssl1.0, and the question could be re-formulated towards: Why is openssh-server for bionic still using libssl1.0.0 and not libssl1.1
And for this question I found a reference in https://wiki.openssl.org/index.php/OpenSSL_1.1.0_Changes#OpenSSH
"OpenSSH does not compile against OpenSSL 1.1.0."

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