[root@SYSADMIN-NB ~]# apt-get install libegl-mesa0
Reading package lists... Done
Building dependency tree
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:
 libegl-mesa0 : Depends: libgbm1 (= 18.2.8-0ubuntu0~18.04.2) but 19.0~git1811301930.89b479~oibaf~x is to be installed
E: Unable to correct problems, you have held broken packages.

[root@SYSADMIN-NB ~]# apt-cache policy libegl-mesa0
libegl-mesa0:
  Installed: (none)
  Candidate: 18.2.8-0ubuntu0~18.04.2
  Version table:
     18.2.8-0ubuntu0~18.04.2 500
        500 http://mirror.yandex.ru/ubuntu bionic-updates/main amd64 Packages
     18.0.0~rc5-1ubuntu1 500
        500 http://mirror.yandex.ru/ubuntu bionic/main amd64 Packages

[root@SYSADMIN-NB ~]# apt-get install libgbm1
Reading package lists... Done
Building dependency tree
Reading state information... Done
libgbm1 is already the newest version (19.0~git1811301930.89b479~oibaf~x).
libgbm1 set to manually installed.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

[root@SYSADMIN-NB ~]# apt-cache policy libgbm1
libgbm1:
  Installed: 19.0~git1811301930.89b479~oibaf~x
  Candidate: 19.0~git1811301930.89b479~oibaf~x
  Version table:
 *** 19.0~git1811301930.89b479~oibaf~x 100
        100 /var/lib/dpkg/status
     18.2.8-0ubuntu0~18.04.2 500
        500 http://mirror.yandex.ru/ubuntu bionic-updates/main amd64 Packages
     18.0.0~rc5-1ubuntu1 500
        500 http://mirror.yandex.ru/ubuntu bionic/main amd64 Packages

[root@SYSADMIN-NB ~]# apt-get purge libgbm1
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
  libnvidia-cfg1-390 libnvidia-common-390 libnvidia-decode-390 libnvidia-decode-390:i386 libnvidia-encode-390 libnvidia-encode-390:i386 libnvidia-fbc1-390 libnvidia-fbc1-390:i386 libnvidia-gl-390
  libnvidia-gl-390:i386 libnvidia-ifr1-390 libnvidia-ifr1-390:i386 libwayland-client0:i386 libwayland-server0 libwayland-server0:i386 libxnvctrl0 nvidia-compute-utils-390 nvidia-dkms-390 nvidia-kernel-common-390
  nvidia-kernel-source-390 nvidia-prime nvidia-settings nvidia-utils-390 screen-resolution-extra xserver-xorg-legacy
Use 'apt autoremove' to remove them.
The following packages will be REMOVED:
  gir1.2-webkit-3.0* libegl1-mesa* libgbm1* libwebkitgtk-3.0-0* nvidia-driver-390* xorg* xserver-xorg* xserver-xorg-core* xserver-xorg-hwe-16.04* xserver-xorg-input-libinput* xserver-xorg-input-wacom*
  xserver-xorg-video-nvidia-390*
0 upgraded, 0 newly installed, 12 to remove and 0 not upgraded.
After this operation, 50.3 MB disk space will be freed.
Do you want to continue? [Y/n] n
Abort.