Edit: The answer was to delete libjpeg9-dev using "dpkg -r" directly rather than depending on the apt command. Removing libjpeg9-dev and then running "apt --fix-broken install" cleared the problem.
During "apt install libtiff-dev" I got an "Ubuntu internal error" message. Coincidence or not, related or not, I have a problem with "apt install" since rebooting. I tried to do "apt install whois" and got
You might want to run 'apt --fix-broken install' to correct these.
The following packages have unmet dependencies:
libtiff-dev : Depends: libjpeg-dev
along with a suggestion to run "apt --fix-broken install". Doing that offers to install "libjpeg-turbo8-dev"; accepting that suggestion wins
trying to overwrite '/usr/include/jerror.h', which is also in package libjpeg9-dev:amd64 1:9d-1
dpkg-deb: error: paste subprocess was killed by signal (Broken pipe)
libjpeg9-dev is in fact installed, but libjpeg-dev, which libtiff-dev is really complaining about, is not installed. Attempting to install it tells me that it depends on libjpeg8-dev, but says it is not going to install that.
Attempting to install it myself gets me:
libjpeg8-dev : Depends: libjpeg-turbo8-dev (>= 1.1.90+svn722-1ubuntu6)
but it is not going to be installed
libjpeg9-dev : Conflicts: libjpeg8-dev but 8c-2ubuntu8 is to be installed
So I'm kind of stuck here.
The long and short of it seems to be that libtiff5 depends on libjpeg8 but I have libjpeg9 installed and that creates a conflict. I'd appreciate any suggestions on how to dig out of this hole.
Thanks for any help.
Full output from my attempt to remove libjpeg9-dev in the process of fixing the installation of libtiff, which has an unmet dependency of libjpeg-dev:
# apt remove libjpeg9-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt --fix-broken install' to correct these.
The following packages have unmet dependencies:
libtiff-dev : Depends: libjpeg-dev
E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).
#
#
# apt --fix-broken install
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following package was automatically installed and is no longer required:
libfprint-2-tod1
Use 'apt autoremove' to remove it.
The following additional packages will be installed:
libjpeg-turbo8-dev
The following NEW packages will be installed:
libjpeg-turbo8-dev
0 upgraded, 1 newly installed, 0 to remove and 31 not upgraded.
6 not fully installed or removed.
Need to get 0 B/238 kB of archives.
After this operation, 988 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
(Reading database ... 249664 files and directories currently installed.)
Preparing to unpack .../libjpeg-turbo8-dev_2.0.3-0ubuntu1.20.04.1_amd64.deb ...
Unpacking libjpeg-turbo8-dev:amd64 (2.0.3-0ubuntu1.20.04.1) ...
dpkg: error processing archive /var/cache/apt/archives/libjpeg-turbo8-dev_2.0.3-
0ubuntu1.20.04.1_amd64.deb (--unpack):
trying to overwrite '/usr/include/jerror.h', which is also in package libjpeg9-
dev:amd64 1:9d-1
dpkg-deb: error: paste subprocess was killed by signal (Broken pipe)
Errors were encountered while processing:
/var/cache/apt/archives/libjpeg-turbo8-dev_2.0.3-0ubuntu1.20.04.1_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
#
Thanks for looking at this.
libjpeg9-devandlibjpeg8-devconflict. They cannot be simultaneously installed. Since nothing in Ubuntu depends uponlibjpeg9-dev, one simple solution is to uninstall that package, perhaps temporarily.sudo apt remove --force libjpeg9-dev. Use --force with caution: It may cause tremendous damage if used unwisely.