Cobra pull a lot of dependencies through viper #1138
Description
When using Cobra in a project, a lot of dependencies are added that are not actually useful for that project. Those comes through viper, which is used in cobra/cmd, that is a CLI tool only useful occasionally for the developer.
github.com/spf13/viper@v1.4.0 github.com/armon/consul-api@v0.0.0-20180202201655-eb2c6b5be1b6
github.com/spf13/viper@v1.4.0 github.com/coreos/bbolt@v1.3.2
github.com/spf13/viper@v1.4.0 github.com/coreos/etcd@v3.3.10+incompatible
github.com/spf13/viper@v1.4.0 github.com/coreos/go-semver@v0.2.0
github.com/spf13/viper@v1.4.0 github.com/coreos/go-systemd@v0.0.0-20190321100706-95778dfbb74e
github.com/spf13/viper@v1.4.0 github.com/coreos/pkg@v0.0.0-20180928190104-399ea9e2e55f
github.com/spf13/viper@v1.4.0 github.com/dgrijalva/jwt-go@v3.2.0+incompatible
github.com/spf13/viper@v1.4.0 github.com/fsnotify/fsnotify@v1.4.7
github.com/spf13/viper@v1.4.0 github.com/gogo/protobuf@v1.2.1
github.com/spf13/viper@v1.4.0 github.com/golang/groupcache@v0.0.0-20190129154638-5b532d6fd5ef
github.com/spf13/viper@v1.4.0 github.com/google/btree@v1.0.0
github.com/spf13/viper@v1.4.0 github.com/gorilla/websocket@v1.4.0
github.com/spf13/viper@v1.4.0 github.com/grpc-ecosystem/go-grpc-middleware@v1.0.0
github.com/spf13/viper@v1.4.0 github.com/grpc-ecosystem/go-grpc-prometheus@v1.2.0
github.com/spf13/viper@v1.4.0 github.com/grpc-ecosystem/grpc-gateway@v1.9.0
github.com/spf13/viper@v1.4.0 github.com/hashicorp/hcl@v1.0.0
github.com/spf13/viper@v1.4.0 github.com/jonboulle/clockwork@v0.1.0
github.com/spf13/viper@v1.4.0 github.com/magiconair/properties@v1.8.0
github.com/spf13/viper@v1.4.0 github.com/mitchellh/mapstructure@v1.1.2
github.com/spf13/viper@v1.4.0 github.com/pelletier/go-toml@v1.2.0
github.com/spf13/viper@v1.4.0 github.com/prometheus/client_golang@v0.9.3
github.com/spf13/viper@v1.4.0 github.com/soheilhy/cmux@v0.1.4
github.com/spf13/viper@v1.4.0 github.com/spf13/afero@v1.1.2
github.com/spf13/viper@v1.4.0 github.com/spf13/cast@v1.3.0
github.com/spf13/viper@v1.4.0 github.com/spf13/jwalterweatherman@v1.0.0
github.com/spf13/viper@v1.4.0 github.com/spf13/pflag@v1.0.3
github.com/spf13/viper@v1.4.0 github.com/stretchr/testify@v1.2.2
github.com/spf13/viper@v1.4.0 github.com/tmc/grpc-websocket-proxy@v0.0.0-20190109142713-0ad062ec5ee5
github.com/spf13/viper@v1.4.0 github.com/ugorji/go@v1.1.4
github.com/spf13/viper@v1.4.0 github.com/xiang90/probing@v0.0.0-20190116061207-43a291ad63a2
github.com/spf13/viper@v1.4.0 github.com/xordataexchange/crypt@v0.0.3-0.20170626215501-b2862e3d0a77
github.com/spf13/viper@v1.4.0 go.etcd.io/bbolt@v1.3.2
github.com/spf13/viper@v1.4.0 go.uber.org/atomic@v1.4.0
github.com/spf13/viper@v1.4.0 go.uber.org/multierr@v1.1.0
github.com/spf13/viper@v1.4.0 go.uber.org/zap@v1.10.0
github.com/spf13/viper@v1.4.0 golang.org/x/net@v0.0.0-20190522155817-f3200d17e092
github.com/spf13/viper@v1.4.0 golang.org/x/time@v0.0.0-20190308202827-9d24e82272b4
github.com/spf13/viper@v1.4.0 google.golang.org/grpc@v1.21.0
github.com/spf13/viper@v1.4.0 gopkg.in/yaml.v2@v2.2.2
Those are quite heavy dependencies: Etcd, systemd, protobuf, prometheus, websocket, GRPC ...
Could you add a secondary go.mod file in the /cobra folder ? This would segregate those deps into the CLI tool and avoid having all that in a project using Cobra without Viper.