Lack of dependency constraints in old versions cause build failures #73
Description
The lack of dependency version constraints in old versions of Ginger can cause those versions to be selected for a build plan and fail.
I ran into this issue when I published queue-sheet-0.7.0.2 on Hackage. The build failed with a DependencyFailed error. The build report shows that GHC 8.10.2 was used, and it looks like ginger-0.8.2.0 was selected so that the latest versions of aeson and optparse-applicative could be used. This version of Ginger does not specify aeson version constraints, but it fails to build with the selected aeson-2.0.3.0.
Perhaps package revisions should be created for older versions of Ginger to add appropriate dependency version constraints and ensure that they are not selected with incompatible dependency versions?