Unable to locate packages

[justkelvin]

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package libexiv2-dev is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
However the following packages replace it:
  libexiv2-27

Package python-pip is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
However the following packages replace it:
  python3-pip

E: Package 'libexiv2-dev' has no installation candidate
E: Package 'python-pip' has no installation candidate
E: Unable to locate package python-xmpp```

[justkelvin]

Just found a way, I messed up with my sources.list file. Fixed everything.

[VainlyStrain]

I'm glad you found the issue, and that it works now! Greetings!