Add content to the version ranges section

Author: philderbeast

doc/how-to-freeze-versions.rst

@@ -29,20 +29,22 @@ Version ranges
 --------------
 
 A dependency can have a version range specified in the package description.
-This is expected for published packages. The `cabal check` command will check
-that version ranges conform to a set of rules:
+Published packages are expected to attach version ranges to dependencies that
+conform to a set of rules that ``cabal check`` command will check for and report
+on:
 
 - that lower bounds are inclusive
 - that upper bounds are exclusive
 - that upper bounds don't have trailing zeros
 - that upper bounds are not missing
 - that upper bounds are not missing for ``base``
 
-With large projects with many packages, it would be a lot of work to keep all
+For large projects with many packages, it would be a lot of work to keep all
 package dependency version ranges up to date. Ways of overcoming this are:
 
+- use a bash script to replace or update version ranges in all package descriptions
 - use a package generator like ``hpack-dhall-cabal`` to import sets of dependencies with version ranges
-- use a ``cabal.project`` file to specify version constraints for all dependencies
+- use a ``cabal.project`` file to specify version constraints for some or all dependencies
 - use a curated set of packages and versions and import these into the project
 
 Version constraints