whitelisted cachix push and pins

[rsrohitsingh682]

Caches with limited storage could exhaust the storage if we push and pin every flake outputs of a subflake. Hence there should be an option to do a whitelisted push and pin.

For example I only want to push and pin omnix-cli and omnix-devshell

[srid]

Caches with limited storage could exhaust the storage if we push and pin every flake outputs of a subflake.

Can you think of a concrete example (perhaps an internal project) where this would be the case?