Fix libssl dependency for deb build script.

[5chdn]

Reverts #4260

Closes #5893

[arkpar]

Does it break compatibility with ubuntu 14.x?

[5chdn]

Not trying to become emotional about this :-p

Just did a quick search, this will break Debian oldstable (Jessie) and all Ubuntu versions. I do not fully understand how it's impossible to ship the 1.1 version of openssl with new Ubuntu versions.

Ubuntu 14.04 openssl 1.0.1f libssl-dev 1.0.1f
Ubuntu 16.04 openssl 1.0.2g libssl-dev 1.0.2g
Ubuntu 17.04 openssl 1.0.2g libssl-dev 1.0.2g
Ubuntu 17.10 openssl 1.0.2g libssl-dev 1.0.2g

Debian 08 OldStable   (Jessi) openssl 1.0.1t libssl-dev 1.0.1t
Debian 09    Stable (Stretch) openssl 1.1.0f libssl-dev 1.1.0f
Debian 10   Testing  (Buster) openssl 1.1.0f libssl-dev 1.1.0f

Closing because I have no idea how to tackle this. I was assuming that if a dinosaur like debian introduces openssl 1.1, ubuntu would have long been there,

[5chdn]

The only solution that comes to my mind is providing different packages for different linux derivatives and versions. Or move away from debs at all.

[arkpar]

Won't something like libssl1.0.0 (>=1.0.0) | libssl (>=1.1.0) work?

[5chdn]

No. Well, maybe, but it will get pretty complex. The issue is debian and ubuntu use different naming convention. In Debian 10 it's libssl1.0.2 for 1.0.2g and in Ubuntu it's libssl1.0.0 for 1.0.2l. Here is a matrix that displays same packages by name and colors them by different versions:

With the current configuration, only Debian stable and testing is broken. The following could work (I'm not sure if the syntax allows it):

libssl (>=1.0.0) | libssl1.0.0 (>=1.0.0) | libssl1.0.2 (>=1.0.0)

But I would need to find a way to test that first.

[jpritikin]

Is this merged for parity 1.8? Because I still can't install parity 1.8.

[5chdn]

No, I closed this because this breaks all Ubuntu versions. If you have any idea, please let me know.

[iFA88]

If you wish to use parity on Debian 9 ( stretch ) you need download the package from https://packages.debian.org/jessie/libssl1.0.0 and install like dpkg --install libssl1.0.0_1.0.1t-+deb8u6_amd64.deb as root. For me works.