set a path to speculos and app ELF for CI via env var

.github/workflows/ci.yml

@@ -716,6 +716,8 @@ jobs:
         id: e2e
         run: cargo +${{ env.NIGHTLY }} test --lib "e2e::ledger_tests::pos_bonds" -- --exact
         env:
+          NAMADA_SPECULOS_PATH: "/root/.local/pipx/venvs/speculos/bin/speculos"
+          NAMADA_SPECULOS_APP_ELF: "/ledger-namada/app_s2.elf"
           NAMADA_DEVICE_AUTOMATION: "true"
           NAMADA_DEVICE_TRANSPORT: "tcp"
           NAMADA_E2E_USE_DEVICE: "true"

crates/tests/src/e2e/ledger_tests.rs

@@ -48,7 +48,7 @@ use crate::e2e::helpers::{
 };
 use crate::e2e::setup::{
     self, allow_duplicate_ips, apply_use_device, default_port_offset, sleep,
-    Bin, Who,
+    speculos_app_elf, speculos_path, Bin, Who,
 };
 use crate::strings::{
     LEDGER_SHUTDOWN, LEDGER_STARTED, NON_VALIDATOR_NODE, TX_APPLIED_SUCCESS,
@@ -551,9 +551,9 @@ fn pos_bonds() -> Result<()> {
 
         // Start Speculos with the automation
         speculos = Some(
-            Command::new("speculos")
+            Command::new(speculos_path())
                 .args([
-                    "app_s2.elf",
+                    &speculos_app_elf(),
                     "--seed",
                     hw_wallet_automation::SEED,
                     "--automation",

crates/tests/src/e2e/setup.rs

@@ -65,6 +65,12 @@ const ENV_VAR_TEMP_PATH: &str = "NAMADA_E2E_TEMP_PATH";
 pub const ENV_VAR_USE_PREBUILT_BINARIES: &str =
     "NAMADA_E2E_USE_PREBUILT_BINARIES";
 
+/// Env. var to set a path to `speculos` executable
+pub const ENV_VAR_SPECULOS_PATH: &str = "NAMADA_SPECULOS_PATH";
+
+/// Env. var to set a path to ledger-namada wallet ELF file for `speculos`
+pub const ENV_VAR_SPECULOS_APP_ELF: &str = "NAMADA_SPECULOS_APP_ELF";
+
 /// An E2E test network.
 #[derive(Debug, Clone)]
 pub struct Network {
@@ -1544,3 +1550,18 @@ pub fn get_all_wasms_hashes(
         })
         .collect()
 }
+
+/// Get the path to `speculos` executable from [`ENV_VAR_SPECULOS_PATH`] if set,
+/// or default to `speculos.py`.
+pub fn speculos_path() -> String {
+    env::var(ENV_VAR_SPECULOS_PATH)
+        .unwrap_or_else(|_| "speculos.py".to_string())
+}
+
+/// Get the path to ledger-namada wallet ELF file for `speculos` executable from
+/// [`ENV_VAR_SPECULOS_APP_ELF`] if set, or default to `app_s2.elf` in working
+/// dir or path.
+pub fn speculos_app_elf() -> String {
+    env::var(ENV_VAR_SPECULOS_APP_ELF)
+        .unwrap_or_else(|_| "app_s2.elf".to_string())
+}