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```