[Bug 1991919] Re: libgoogle-glog-dev has unmet dependencies due to libunwind

[Nikolaus Demmel]

Any workaround for this? I just tried and this still reproduces. For
example, you cannot install both libc++-dev and libgoogle-glog-dev due
to this:

    apt install libc++-dev libgoogle-glog-dev

Interestingly, for me this only happens on x86_64. On the arm version of
the libgoogle-glog-dev package does not depend on libunwind:

```
$ apt show libgoogle-glog-dev
Package: libgoogle-glog-dev
Version: 0.5.0+really0.4.0-2
Priority: optional
Section: universe/libdevel
Source: google-glog
Origin: Ubuntu
Maintainer: Ubuntu Developers <ubuntu-devel-discuss at lists.ubuntu.com>
Original-Maintainer: Laszlo Boszormenyi (GCS) <gcs at debian.org>
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Installed-Size: 383 kB
Depends: libgoogle-glog0v5 (= 0.5.0+really0.4.0-2), libgflags-dev
Homepage: https://github.com/google/glog
Download-Size: 91.7 kB
APT-Manual-Installed: yes
APT-Sources: http://ports.ubuntu.com/ubuntu-ports jammy/universe arm64 Packages
Description: library that implements application-level logging.
```

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https://bugs.launchpad.net/bugs/1991919

Title:
  libgoogle-glog-dev has unmet dependencies due to libunwind

Status in google-glog package in Ubuntu:
  Confirmed
Status in libunwind package in Ubuntu:
  Confirmed

Bug description:
  # Error Description

  Installing `libgoogle-glog-dev` results in an error:

  ```
  $ sudo apt install libgoogle-glog-dev
  Reading package lists... Done
  Building dependency tree... Done
  Reading state information... Done
  Some packages could not be installed. This may mean that you have
  requested an impossible situation or if you are using the unstable
  distribution that some required packages have not yet been created
  or been moved out of Incoming.
  The following information may help to resolve the situation:

  The following packages have unmet dependencies:
   libunwind-14-dev : Breaks: libunwind-dev but 1.3.2-2build2 is to be installed
  E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.
  ```

  # Comments

  I have the packages libc++-14-dev and libc++-dev installed.
  The package libgoogle-glog-dev dependes on "libunwind-dev | libunwind7-dev". But Package 'libunwind7-dev' has no installation candidate. Package 'libunwind-dev' is incompatible with libc++-14-dev and libc++-dev:

  ```
  $ sudo apt install libunwind-dev
  Reading package lists... Done
  Building dependency tree... Done
  Reading state information... Done
  The following packages will be REMOVED:
    libc++-14-dev libc++-dev libunwind-14-dev
  The following NEW packages will be installed:
    libunwind-dev
  0 upgraded, 1 newly installed, 3 to remove and 14 not upgraded.
  Need to get 0 B/1.882 kB of archives.
  After this operation, 3.176 kB disk space will be freed.
  Do you want to continue? [Y/n] n
  Abort.
  ```

  # Additional information:

  $ lsb_release -rd
  Description:    Ubuntu 22.04.1 LTS
  Release:        22.04

  $ apt-cache policy libgoogle-glog-dev
  libgoogle-glog-dev:
    Installed: (none)
    Candidate: 0.5.0+really0.4.0-2
    Version table:
       0.5.0+really0.4.0-2 500
          500 http://de.archive.ubuntu.com/ubuntu jammy/universe amd64 Packages

  $ apt show libgoogle-glog-dev
  Package: libgoogle-glog-dev
  Version: 0.5.0+really0.4.0-2
  Priority: optional
  Section: universe/libdevel
  Source: google-glog
  Origin: Ubuntu
  Maintainer: Ubuntu Developers <ubuntu-devel-discuss at lists.ubuntu.com>
  Original-Maintainer: Laszlo Boszormenyi (GCS) <gcs at debian.org>
  Bugs: https://bugs.launchpad.net/ubuntu/+filebug
  Installed-Size: 388 kB
  Depends: libgoogle-glog0v5 (= 0.5.0+really0.4.0-2), libgflags-dev, libunwind-dev | libunwind7-dev
  Homepage: https://github.com/google/glog
  Download-Size: 91,9 kB
  APT-Sources: http://de.archive.ubuntu.com/ubuntu jammy/universe amd64 Packages
  Description: library that implements application-level logging.
   This library provides logging APIs based on C++-style streams and
   various helper macros.
   .
   This package contains static and debug libraries and header files for
   developing applications.

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