I use these in various projects to deal with Entity. Also used in supercede.
Usage
Tools
Enter the nix shell.
nix-shell
You can checkout the makefile to see what's available:
cat makefile
Fast filewatch which runs tests
make ghcid
adds an isomorphism from entity to tuple and field lenses on entity.
Homepage Repository Hackage Nix Download
cabal install persistent-lens-1.0.0