improve(fortanix-vme-runner): use doc comments over explicit help in

clap

Author: tvsfx

fortanix-vme/fortanix-vme-runner/src/main.rs

@@ -81,17 +81,12 @@ struct AwsNitroCli {
 
 #[derive(Clone, Debug, Args)]
 struct AmdSevSnpArgs {
-    #[arg(
-        long = "firmware-image",
-        help = "Path to the firmware image file, defaulting to the relevant vendored image if not provided"
-    )]
+    /// Path to the firmware image file, defaulting to the relevant vendored image if not provided
+    #[arg(long = "firmware-image")]
     firmware_image_path: Option<PathBuf>,
 
-    #[arg(
-        long,
-        help = "Name for the enclave in the runner",
-        default_value = "FortanixVm"
-    )]
+    /// Name for the enclave in the runner
+    #[arg(long, default_value = "FortanixVm")]
     enclave_name: String,
 
     #[arg(last = true)]

fortanix-vme/fortanix-vme-tools/src/bin/ftxvme-runner-cargo.rs

@@ -44,8 +44,10 @@ struct AwsNitroCli {
 
 /// Arguments inserted by cargo itself at the end of the invocation
 #[derive(Clone, Debug, Args)]
+#[command(about = "")]
 struct CargoArgs {
-    #[arg(help = "Path to the x86_64-unknown-linux-fortanixvme ELF binary", value_parser=parse_elf_path)]
+    /// Path to the x86_64-unknown-linux-fortanixvme ELF binary
+    #[arg(value_parser=parse_elf_path)]
     elf_path: PathBuf,
 
     #[arg(trailing_var_arg = true)]