Add --interactive flag

cmd/BUILD.bazel

diff --git a/cmd/BUILD.bazel b/cmd/BUILD.bazel
index c844260..aa504f3 100644
--- a/cmd/BUILD.bazel
+++ b/cmd/BUILD.bazel
@@ -11,6 +11,7 @@
     deps = [
         "//bazel",
         "//buildinfo",
+        "@com_github_mattn_go_isatty//:go-isatty",
         "@com_github_mitchellh_go_homedir//:go-homedir",
         "@com_github_spf13_cobra//:cobra",
         "@com_github_spf13_viper//:viper",

cmd/root.go

diff --git a/cmd/root.go b/cmd/root.go
index 9935bcb..8d9e513 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -12,9 +12,11 @@
 
 	homedir "github.com/mitchellh/go-homedir"
 	"github.com/spf13/viper"
+	"github.com/mattn/go-isatty"
 )
 
 var cfgFile string
+var interactive bool
 
 // rootCmd represents the base command when called without any subcommands
 var rootCmd = &cobra.Command{
@@ -41,9 +43,11 @@
 
 	rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.aspect.yaml)")
 
-	// Cobra also supports local flags, which will only run
-	// when this action is called directly.
-	rootCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
+	interactive_default := false
+	if isatty.IsTerminal(os.Stdout.Fd()) || isatty.IsCygwinTerminal(os.Stdout.Fd()) {
+		interactive_default = true
+	}
+	rootCmd.PersistentFlags().BoolVar(&interactive, "interactive", interactive_default, "Interactive mode (e.g. prompts for user input)")
 }
 
 // initConfig reads in config file and ENV variables if set.

cmd/version.go

diff --git a/cmd/version.go b/cmd/version.go
index a5c06ea..2440206 100644
--- a/cmd/version.go
+++ b/cmd/version.go
@@ -23,7 +23,7 @@
 		} else {
 			version := buildinfo.Release
 			if buildinfo.GitStatus != "clean" {
-				version += " (in a dirty clone)"
+				version += " (with local changes)"
 			}
 			fmt.Printf("Aspect version: %s\n", version)
 		}

go.bzl

diff --git a/go.bzl b/go.bzl
index e257ad5..ed22fc9 100644
--- a/go.bzl
+++ b/go.bzl
@@ -42,6 +42,7 @@
     )
     go_repository(
         name = "com_github_bazelbuild_bazelisk",
+        build_naming_convention = "go_default_library",
         importpath = "github.com/bazelbuild/bazelisk",
         sum = "h1:2EWA2lRrt/k8B5ASt0mlTDQ+7mnzvKdF6ShNWLbk0o0=",
         version = "v1.10.1",
@@ -501,8 +502,8 @@
     go_repository(
         name = "com_github_mattn_go_isatty",
         importpath = "github.com/mattn/go-isatty",
-        sum = "h1:ns/ykhmWi7G9O+8a448SecJU3nSMBXJfqQkl0upE1jI=",
-        version = "v0.0.3",
+        sum = "h1:qdl+GuBjcsKKDco5BsxPJlId98mSWNKqYA+Co0SC1yA=",
+        version = "v0.0.13",
     )
     go_repository(
         name = "com_github_matttproud_golang_protobuf_extensions",

go.mod

diff --git a/go.mod b/go.mod
index fd7045c..9abbdfd 100644
--- a/go.mod
+++ b/go.mod
@@ -6,6 +6,7 @@
 	github.com/bazelbuild/bazelisk v1.10.1
 	github.com/fsnotify/fsnotify v1.4.9 // indirect
 	github.com/magiconair/properties v1.8.5 // indirect
+	github.com/mattn/go-isatty v0.0.13
 	github.com/mitchellh/go-homedir v1.1.0
 	github.com/mitchellh/mapstructure v1.4.1 // indirect
 	github.com/pelletier/go-toml v1.9.2 // indirect

go.sum

diff --git a/go.sum b/go.sum
index bbc71ac..4013186 100644
--- a/go.sum
+++ b/go.sum
@@ -198,8 +198,9 @@
 github.com/magiconair/properties v1.8.5/go.mod h1:y3VJvCyxH9uVvJTWEGAELF3aiYNyPKd5NZ3oSwXrF60=
 github.com/mattn/go-colorable v0.0.9 h1:UVL0vNpWh04HeJXV0KLcaT7r06gOH2l4OW6ddYRUIY4=
 github.com/mattn/go-colorable v0.0.9/go.mod h1:9vuHe8Xs5qXnSaW/c/ABM9alt+Vo+STaOChaDxuIBZU=
-github.com/mattn/go-isatty v0.0.3 h1:ns/ykhmWi7G9O+8a448SecJU3nSMBXJfqQkl0upE1jI=
 github.com/mattn/go-isatty v0.0.3/go.mod h1:M+lRXTBqGeGNdLjl/ufCoiOlB5xdOkqRJdNxMWT7Zi4=
+github.com/mattn/go-isatty v0.0.13 h1:qdl+GuBjcsKKDco5BsxPJlId98mSWNKqYA+Co0SC1yA=
+github.com/mattn/go-isatty v0.0.13/go.mod h1:cbi8OIDigv2wuxKPP5vlRcQ1OAZbq2CE4Kysco4FUpU=
 github.com/matttproud/golang_protobuf_extensions v1.0.1 h1:4hp9jkHxhMHkqkrB3Ix0jegS5sx/RkqARlsWZ6pIwiU=
 github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
 github.com/miekg/dns v1.0.14 h1:9jZdLNd/P4+SfEJ0TNyxYpsK8N4GtfylBLqtbYN1sbA=
@@ -387,6 +388,7 @@
 golang.org/x/sys v0.0.0-20190606165138-5da285871e9c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190624142023-c5567b49c5d0/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191005200804-aed5e4c7ecf9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210611083646-a4fc73990273 h1:faDu4veV+8pcThn4fewv6TVlNCezafGoC1gM/mxQLbQ=
 golang.org/x/sys v0.0.0-20210611083646-a4fc73990273/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=