[Bug 1896405] Re: Cannot install libglib2.0-dev on ubuntu 20.04.1

[Sebastien Bacher]

Great that it worked out. The downgrade was trying to remove things
because libglib binaries need to be on the same version so it was
necessary to downgrade libglib2.0-bin/focal in addition to the main
library

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https://bugs.launchpad.net/bugs/1896405

Title:
  Cannot install  libglib2.0-dev on ubuntu 20.04.1

Status in glib2.0 package in Ubuntu:
  Invalid

Bug description:
  I already tried running `apt update/upgrade`, but it did not make any
  difference.

  Why these versions conflicts are happening?

  1. libglib2.0-bin : Conflicts: libglib2.0-bin:i386 but 2.64.2-1~fakesync1 is to be installed
  1. libglib2.0-bin:i386 : Conflicts: libglib2.0-bin but 2.64.3-1~ubuntu20.04.1 is installed
  1. libglib2.0-dev : Depends: libglib2.0-0 (= 2.64.2-1~fakesync1) but 2.64.3-1~ubuntu20.04.1 is installed
  1. libglib2.0-0 : Breaks: libglib2.0-0:i386 (!= 2.64.3-1~ubuntu20.04.1) but 2.64.2-1~fakesync1 is to be installed
  1. libglib2.0-0:i386 : Breaks: libglib2.0-0 (!= 2.64.2-1~fakesync1) but 2.64.3-1~ubuntu20.04.1 is installed

  ```
  $ sudo aptitude install libglib2.0-dev
  The following NEW packages will be installed:
    gcc-10-base:i386{a} libblkid-dev{a} libblkid1:i386{a} libc6:i386{a} libcrypt1:i386{a} libelf1:i386{a} libffi-dev{a} libffi7:i386{a} libgcc-s1:i386{a} libglib2.0-0:i386{ab} 
    libglib2.0-bin:i386{ab} libglib2.0-dev{b} libglib2.0-dev-bin{a} libidn2-0:i386{a} libmount-dev{a} libmount1:i386{a} libpcre2-8-0:i386{a} libpcre2-dev{a} libpcre2-posix2{a} 
    libpcre3:i386{a} libselinux1:i386{a} libselinux1-dev{a} libsepol1-dev{a} libunistring2:i386{a} zlib1g:i386{a} 
  0 packages upgraded, 25 newly installed, 0 to remove and 0 not upgraded.

  Need to get 8.701 kB of archives. After unpacking 41,3 MB will be used.
  The following packages have unmet dependencies:
   libglib2.0-bin : Conflicts: libglib2.0-bin:i386 but 2.64.2-1~fakesync1 is to be installed
   libglib2.0-bin:i386 : Conflicts: libglib2.0-bin but 2.64.3-1~ubuntu20.04.1 is installed
   libglib2.0-dev : Depends: libglib2.0-0 (= 2.64.2-1~fakesync1) but 2.64.3-1~ubuntu20.04.1 is installed
   libglib2.0-0 : Breaks: libglib2.0-0:i386 (!= 2.64.3-1~ubuntu20.04.1) but 2.64.2-1~fakesync1 is to be installed
   libglib2.0-0:i386 : Breaks: libglib2.0-0 (!= 2.64.2-1~fakesync1) but 2.64.3-1~ubuntu20.04.1 is installed
  open: 2; closed: 4; defer: 0; conflict: 0

  The following actions will resolve these dependencies:

       Keep the following packages at their current version:
  1)     libglib2.0-0:i386 [Not Installed]                  
  2)     libglib2.0-bin:i386 [Not Installed]                
  3)     libglib2.0-dev [Not Installed]                     

  Accept this solution? [Y/n/q/?] y
  No packages will be installed, upgraded, or removed.
  0 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
  Need to get 0 B of archives. After unpacking 0 B will be used.
  ```

  ```
  $ cat /etc/os-release 
  NAME="Ubuntu"
  VERSION="20.04.1 LTS (Focal Fossa)"
  ID=ubuntu
  ID_LIKE=debian
  PRETTY_NAME="Ubuntu 20.04.1 LTS"
  VERSION_ID="20.04"
  HOME_URL="https://www.ubuntu.com/"
  SUPPORT_URL="https://help.ubuntu.com/"
  BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
  PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
  VERSION_CODENAME=focal
  UBUNTU_CODENAME=focal
  ```

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