@hackage highlight-versions0.1.2.1

This package provides an executable which reads from stdin and outputs the same thing to stdout, except that any lines which look like package identifiers (e.g. foo-0.3.2) are highlighted if the version does not match the latest version on Hackage: red if the version is less than the version on Hackage, or cyan if greater. In addition, the Hackage version is shown in blue.

In particular, it can be useful to pipe the output of cabal(-dev) install --dry-run through this program, to aid in checking the install plan. It's usually a good idea to understand why an outdated package is being installed; otherwise it can indicate that something needs to be updated.