cmd/app: pass user-specified arguments

An extra argument is added to pad out argv0.

Signed-off-by: Ophestra <cat@gensokyo.uk>

cmd/app/app.go

@@ -112,7 +112,7 @@ func parse(id string, base *check.Absolute, r io.Reader) (*hst.Config, error) {
 	if err := scanOnce(); err != nil {
 		return nil, err
 	}
-	c.Container.Args = append(c.Container.Args, s.Text())
+	c.Container.Args = append(c.Container.Args, s.Text(), "")
 
 	var flagGPU, flagSystemBus bool
 	flags := map[string]*bool{

cmd/app/app_test.go

@@ -120,6 +120,7 @@ talk com.canonical.Unity
 				Args: []string{
 					"zsh", "-ic",
 					"exec Discord --ozone-platform-hint=wayland",
+					"",
 				},
 
 				Flags: hst.FCoverRun | hst.FUserns | hst.FHostNet | hst.FMapRealUID |

cmd/app/main.go

@@ -148,7 +148,7 @@ func main() {
 		c.NewCommand(
 			"run", "Start the named application",
 			func(args []string) error {
-				if len(args) != 1 {
+				if len(args) < 1 {
 					dents, err := os.ReadDir(base.Append("app").String())
 					if err != nil {
 						return err
@@ -197,7 +197,7 @@ func main() {
 					config.Container.Args[2] = flagCommand
 				}
 
-				return run(ctx, msg, config)
+				return run(ctx, msg, config, args[1:]...)
 			},
 		).
 			Flag(

cmd/app/run.go

@@ -12,7 +12,12 @@ import (
 )
 
 // run starts a container via cmd/hakurei and returns after it terminates.
-func run(ctx context.Context, msg message.Msg, config *hst.Config) error {
+func run(
+	ctx context.Context,
+	msg message.Msg,
+	config *hst.Config,
+	args ...string,
+) error {
 	c, cancel := context.WithCancel(ctx)
 	defer cancel()
 
@@ -25,6 +30,7 @@ func run(ctx context.Context, msg message.Msg, config *hst.Config) error {
 		cmd.Args = append(cmd.Args, "-v")
 	}
 	cmd.Args = append(cmd.Args, "run", "3")
+	cmd.Args = append(cmd.Args, args...)
 
 	r, w, err := os.Pipe()
 	if err != nil {