Feature Request

I would like the output of stack ls dependencies json to contain sha256 and size of packages. AFAIK this information is already available in the snapshots, but currently not exposed through stack's CLI.

Motivation

The upcoming release of stack contains the new stack ls dependencies json feature which returns the package dependency graph and some additional package metadata for a given project (package names, versions, locations, dependencies) in a JSON format. This is very useful for build tools that would like to call out to stack to determine how to fetch sources of Stackage dependencies. The motivating use-case is Bazel with rules_haskell, see tweag/rules_haskell#1310. Though this may also be beneficial for other build tools.