Interface to defining services that can build dev VM, AMI, container, etc. images or deploy production-oriented ASGs, or other programmable infrastructure constructs. An artifact would have a specific structure based on a contract such that service runtime could be configured and built from it.

myservice.nix

# Abstract
{ mkService, serviceArtifact, privateIfc, lbSource, authService, dataService, logService, logPath, secretsPath }:
mkService {
  name = "service-name";
  version = "0.1.2";
  artifacts = [ serviceArtifact ];
  listens = [ { type = "tcp"; port = 9999; interface = privateIfc; } ];
  accepts = [ lbSource ]; # traffic sources to accept traffic from.
  talks = [ authService dataService logService ]; # this allows auto configuration given the service definitions of those in the specific environment.
  writes = [ logPath ];
  reads = [ secretsPath ];
}

# Needs to built with a "target" definition for runnable output, e.g. AWS-ASG, AWS-AMI, VirutalBox-VM, or whatever.
# Also needs list of constraints such as "stripe across available availability zones in region R0", or "multi-region where primary in R0 and forwarded secondary system in R1"
# So we have a signature like: Service -> Constraints -> Target -> RunnableInfrastructure
# The above will be codified into dependent types to ensure basic sanity (at least) prevails in your running infrastructure.