guesstimate/modd.conf

server/**/*.go
!server/**/*_test.go
server/data/config.yml
.env
modd.conf {
  prep: make build-server
  prep: cd server && [ -e data/config.yml ] || ( mkdir -p data && bin/server -dump-config > data/config.yml )
  prep: cd server && [ -e .env ] || ( cp .env.dist .env ) 
  daemon: cd server &&  ( set -o allexport && source .env && set +o allexport && bin/server -config data/config.yml )
}

{
  daemon: cd client && npm run dev
}

server/**/*.go
server/**/*_test.go {
  prep: cd server && go clean -testcache && go test -race -v ./...
}