Were did the vivid version not build? I was able to build tgt version 1.0.43-0ubuntu4.1 in a vivid chroot and see that same version of tgt built in Launchpad successfully.
https://launchpad.net/ubuntu/+source/tgt/1:1.0.43-0ubuntu4.1
Does the environment you were building tgt in have -updates enabled?
Were did the vivid version not build? I was able to build tgt version 1.0.43-0ubuntu4.1 in a vivid chroot and see that same version of tgt built in Launchpad successfully.
https:/ /launchpad. net/ubuntu/ +source/ tgt/1:1. 0.43-0ubuntu4. 1
Does the environment you were building tgt in have -updates enabled?