Created a Go CLI project skeleton.

drycop/.gitignore

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+# Executable binary
+drycop

drycop/cmd/root.go

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+/* This is free and unencumbered software released into the public domain. */
+
+package cmd
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+)
+
+var configFile string
+var debug bool
+var verbose bool
+
+// RootCmd describes the `drycop` command
+var RootCmd = &cobra.Command{
+	Use:   "drycop",
+	Short: "DRYcop",
+	Long: `DRYcop is a lint tool for DRY projects.`,
+	Version: "0.0.0",
+}
+
+// Execute implements the `drycop` command
+func Execute() {
+	if err := RootCmd.Execute(); err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
+}
+
+func init() {
+	cobra.OnInitialize(initConfig)
+	RootCmd.PersistentFlags().StringVarP(&configFile, "config", "C", "", "Set config file (default: $HOME/.drycop/config.yaml)")
+	RootCmd.PersistentFlags().BoolVarP(&debug, "debug", "d", false, "Enable debugging")
+	RootCmd.PersistentFlags().BoolVarP(&verbose, "verbose", "v", false, "Be verbose")
+	RootCmd.SetVersionTemplate(`DRYcop {{printf "%s" .Version}}
+`)
+}
+
+// initConfig reads the configuration file and environment variables.
+func initConfig() {
+	if configFile != "" {
+		// Use the specified config file:
+		viper.SetConfigFile(configFile)
+	} else {
+		// Search for config file in the current directory and under the home directory:
+		viper.SetConfigName("config")
+		viper.AddConfigPath(".")
+		viper.AddConfigPath("$HOME/.drycop")
+	}
+
+	viper.AutomaticEnv() // read in environment variables that match
+
+	// If a config file is found, read it in:
+	if err := viper.ReadInConfig(); err == nil {
+		if debug {
+			fmt.Println("Using config file:", viper.ConfigFileUsed())
+		}
+	}
+}

drycop/main.go

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+/* This is free and unencumbered software released into the public domain. */
+
+// drycop is a lint tool for DRY projects.
+package main
+
+import "github.com/dryproject/drycop/drycop/cmd"
+
+func main() {
+	cmd.Execute()
+}