[Bug 1754686] Re: libcurl4 Conflicts: libcurl3 - prevents install of 3rd party apps like slack-desktop

[Maarten Fonville]

This also affects the installation of popular 3rd party application
Spotify: https://community.spotify.com/t5/Desktop-
Linux/libcurl4/m-p/4411011#M15902

I wonder, Debian still has libcurl3 versioned library/symbols in their
'unstable' repo, their libcurl4 is only in experimental yet. I
understand that with the perspective of LTS-support upgrading to
libcurl4 can be a good move, from security perspective, but there should
be a graceful upgrade path and if possible some kind of legacy support
of packages that were built using libcurl3 (maybe the libcurl3 libs can
also be part of the libcurl4-package and that in its dpkg control it
also 'provides' libcurl3?

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Title:
  libcurl4 Conflicts: libcurl3 - prevents install of 3rd party apps like
  slack-desktop

Status in curl package in Ubuntu:
  Confirmed

Bug description:
  Updating the curl package pulls in libcurl4, which for some reason
  forces libcurl3 to be removed. This prevents 3rd party apps that still
  build against libcurl3 from being installed. Isn't there a more
  graceful way to effect the transition from libcurl3 to libcurl4?

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: libcurl4 7.58.0-2ubuntu2
  ProcVersionSignature: Ubuntu 4.15.0-10.11-generic 4.15.3
  Uname: Linux 4.15.0-10-generic x86_64
  ApportVersion: 2.20.8-0ubuntu10
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Fri Mar  9 10:10:10 2018
  EcryptfsInUse: Yes
  SourcePackage: curl
  UpgradeStatus: Upgraded to bionic on 2018-03-06 (2 days ago)

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