Mention ?submodules=1 in readme
Update generateOptparseApplicativeCompletions
Don't use the filesystem as a poor man's database
...instead use JSON as a poor man's database :D
Enable completions in nix package
Add Pin monad
only Reader+IO for now
Add contributing to README
Support nix >=2.4 (only)
There is a backward-incompatible change in nix eval
Add installation and usage in README
Show global options in subcommand help
Scan symlinks by searching for hashes in target path
Obtain the store path from nix