(In)compatibility library libcurl3

[Dr. Uwe Meyer-Gruhl]

With Bionic (18.04), libcurl4 is the standard, libcurl3 seems to be a compatibility library.

However, libcurl3 and libcurl4 can not be installed together, presumably because of some obscure dependencies in the packages. These dependencies are, however, unneccessary, because the shared libraries have different names.

Alas, since the package curl itself relies on libcurl4, installing libcurl3 removes curl. For example, installing Domoticz and other external tools need libcurl3 and thus remove curl support.

If the dependencies between libcurl3 and 4 were corrected in Bionic, this could easily be fixed.

[Juhani Numminen (jsonic)]

Both packages install libcurl.so.4 (https://packages.ubuntu.com/bionic/amd64/libcurl3/filelist).

I do not fully understand the situation here but it seems the way forward is to use a version of Domoticz that works with the package libcurl4.

[Dimitri John Ledkov (xnox)]

curl3 was a temporary hack in the archive to "fix" xmltooling.
curl3 has now been removed in cosmic, cause the newly upgraded xmltooling stack works with curl4 and the new openssl now.

[Dimitri John Ledkov (xnox)]

Marking cosmic task as fix-released; but keeping a bionic task open.