small progress

internal/cli/mfer.go

@@ -1,11 +1,13 @@
 package cli
 
 import (
+	"errors"
 	"fmt"
-	"log"
 	"os"
 	"time"
 
+	log "github.com/visionmedia/go-cli-log"
+
 	"git.eeqj.de/sneak/mfer/mfer"
 	"github.com/davecgh/go-spew/spew"
 	"github.com/pterm/pterm"
@@ -89,12 +91,12 @@ func (mfa *CLIApp) run() {
 
 	if err != nil {
 		mfa.exitCode = 1
-		log.Fatal(err)
+		log.Error(err)
 	}
 }
 
 func (mfa *CLIApp) validateManifestOperation(c *cli.Context) error {
-	log.Fatal("unimplemented")
+	log.Error(errors.New("unimplemented"))
 	return nil
 }