Woohoo! Filo's agent setup routine goes through!

% yubikey-agent -setup --really-delete-all-piv-keys
Resetting YubiKey PIV applet...
🔐 The PIN is up to 8 numbers, letters, or symbols.
👆 You'll need it once per session.
❌ The YubiKey gets locked if the wrong PIN is entered 3 times.

Choose a new PIN:
Repeat PIN:
🧪 Reticulating splines...

✅ Done! This YubiKey is secured and ready to go.🤏 When the YubiKey blinks, touch it to authorize the login.🔑 Here's your new shiny SSH public key:ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBNAn1mgsUfJ0eA+cbvPcJBilynMKI9lIlpeZWMAHlZGe3dK62CxD5z7RQ/KdnXxQqQOP/qt1xdDOJDn3NjQrtRU=

Next steps: ensure yubikey-agent is running via launchd/systemd/...,set the SSH_AUTH_SOCK environment variable, and test with "ssh-add -L"

💭 Remember: everything breaks, have a backup plan for when this YubiKey does.

src/command.rs

@@ -3,7 +3,7 @@ pub mod instruction;
 
 pub type Data = heapless_bytes::Bytes<crate::MAX_COMMAND_DATA>;
 
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
 pub struct Command {
     class: class::Class,
     instruction: instruction::Instruction,
@@ -37,6 +37,10 @@ impl Command {
         &self.data
     }
 
+    pub fn data_mut(&mut self) -> &mut Data {
+        &mut self.data
+    }
+
     pub fn expected(&self) -> usize {
         self.le
     }