go build 失败

[mdsf22]

go get -u github.com/bilibili/kratos/tool/kratos
cd $GOPATH/src
kratos new kratos-demo
cd $GOPATH/src/kratos-demo/cmd
go build

失败

../../github.com/bilibili/kratos/pkg/conf/paladin/toml.go:8:2: cannot find package "github.com/BurntSushi/toml" in any of:
	/usr/local/go/src/github.com/BurntSushi/toml (from $GOROOT)
	/root/go/src/github.com/BurntSushi/toml (from $GOPATH)
../../github.com/bilibili/kratos/pkg/conf/paladin/file.go:14:2: cannot find package "github.com/fsnotify/fsnotify" in any of:
	/usr/local/go/src/github.com/fsnotify/fsnotify (from $GOROOT)
	/root/go/src/github.com/fsnotify/fsnotify (from $GOPATH)
../../github.com/bilibili/kratos/pkg/database/sql/mysql.go:10:2: cannot find package "github.com/go-sql-driver/mysql" in any of:
	/usr/local/go/src/github.com/go-sql-driver/mysql (from $GOROOT)
	/root/go/src/github.com/go-sql-driver/mysql (from $GOPATH)
../../github.com/bilibili/kratos/pkg/net/http/blademaster/render/protobuf.go:6:2: cannot find package "github.com/gogo/protobuf/proto" in any of:
	/usr/local/go/src/github.com/gogo/protobuf/proto (from $GOROOT)
	/root/go/src/github.com/gogo/protobuf/proto (from $GOPATH)
../../github.com/bilibili/kratos/pkg/net/http/blademaster/render/render.pb.go:18:8: cannot find package "github.com/gogo/protobuf/types" in any of:
	/usr/local/go/src/github.com/gogo/protobuf/types (from $GOROOT)
	/root/go/src/github.com/gogo/protobuf/types (from $GOPATH)
../../github.com/bilibili/kratos/pkg/net/trace/proto/span.pb.go:6:8: cannot find package "github.com/golang/protobuf/proto" in any of:
	/usr/local/go/src/github.com/golang/protobuf/proto (from $GOROOT)
	/root/go/src/github.com/golang/protobuf/proto (from $GOPATH)
../../github.com/bilibili/kratos/pkg/ecode/status.go:9:2: cannot find package "github.com/golang/protobuf/ptypes" in any of:
	/usr/local/go/src/github.com/golang/protobuf/ptypes (from $GOROOT)
	/root/go/src/github.com/golang/protobuf/ptypes (from $GOPATH)
../../github.com/bilibili/kratos/pkg/ecode/types/status.pb.go:9:8: cannot find package "github.com/golang/protobuf/ptypes/any" in any of:
	/usr/local/go/src/github.com/golang/protobuf/ptypes/any (from $GOROOT)
	/root/go/src/github.com/golang/protobuf/ptypes/any (from $GOPATH)
../../github.com/bilibili/kratos/pkg/net/trace/proto/span.pb.go:9:8: cannot find package "github.com/golang/protobuf/ptypes/duration" in any of:
	/usr/local/go/src/github.com/golang/protobuf/ptypes/duration (from $GOROOT)
	/root/go/src/github.com/golang/protobuf/ptypes/duration (from $GOPATH)
../../github.com/bilibili/kratos/pkg/net/trace/proto/span.pb.go:10:8: cannot find package "github.com/golang/protobuf/ptypes/timestamp" in any of:
	/usr/local/go/src/github.com/golang/protobuf/ptypes/timestamp (from $GOROOT)
	/root/go/src/github.com/golang/protobuf/ptypes/timestamp (from $GOPATH)
../../github.com/bilibili/kratos/pkg/net/trace/config.go:9:2: cannot find package "github.com/pkg/errors" in any of:
	/usr/local/go/src/github.com/pkg/errors (from $GOROOT)
	/root/go/src/github.com/pkg/errors (from $GOPATH)
../../github.com/bilibili/kratos/pkg/stat/prom/prometheus.go:8:2: cannot find package "github.com/prometheus/client_golang/prometheus" in any of:
	/usr/local/go/src/github.com/prometheus/client_golang/prometheus (from $GOROOT)
	/root/go/src/github.com/prometheus/client_golang/prometheus (from $GOPATH)
../../github.com/bilibili/kratos/pkg/net/http/blademaster/prometheus.go:4:2: cannot find package "github.com/prometheus/client_golang/prometheus/promhttp" in any of:
	/usr/local/go/src/github.com/prometheus/client_golang/prometheus/promhttp (from $GOROOT)
	/root/go/src/github.com/prometheus/client_golang/prometheus/promhttp (from $GOPATH)
../../github.com/bilibili/kratos/pkg/net/trace/propagation.go:7:2: cannot find package "google.golang.org/grpc/metadata" in any of:
	/usr/local/go/src/google.golang.org/grpc/metadata (from $GOROOT)
	/root/go/src/google.golang.org/grpc/metadata (from $GOPATH)
../../github.com/bilibili/kratos/pkg/conf/dsn/dsn.go:8:2: cannot find package "gopkg.in/go-playground/validator.v9" in any of:
	/usr/local/go/src/gopkg.in/go-playground/validator.v9 (from $GOROOT)
	/root/go/src/gopkg.in/go-playground/validator.v9 (from $GOPATH)

go version 为1.12.4

[tonybase]

应该是没启用gomod，可以export GO111MODULE=on启用一下试试

[Terry-Mao]

@tonyboxes 在README更新下需要Requirements，go版本，go mod，protoc 等