fix ledger

.github/workflows/build_ledger_wallet.yml

@@ -15,6 +15,7 @@ name: Build minotari_ledger_wallet
 env:
   TS_FILENAME: "minotari_ledger_wallet"
   SHARUN: "shasum --algorithm 256"
+  DOCKER_IMAGE: "ghcr.io/ledgerhq/ledger-app-builder/ledger-app-builder:3.43.0 "
 
 concurrency:
   # https://docs.github.com/en/actions/examples/using-concurrency-expressions-and-a-test-matrix
@@ -59,7 +60,7 @@ jobs:
           docker run --rm \
             -v ".:/app" \
             -w "/app/applications/minotari_ledger_wallet/wallet" \
-            ghcr.io/ledgerhq/ledger-app-builder/ledger-app-builder \
+            ${{env.DOCKER_IMAGE}} \
             cargo ledger build ${{ matrix.ledger_target }}
 
       - name: env Setup

applications/minotari_ledger_wallet/wallet/Cargo.toml

@@ -20,14 +20,17 @@ include_gif = "1.0.1"
 ledger_device_sdk = "1.15"
 rand_core = { version = "0.6", default_features = false }
 zeroize = { version = "1", default-features = false }
+# We dont directly use or call ledger_secure_sdk_sys, but it is a dependency of ledger_device_sdk,
+# we want to force it to a lower version so that it can run on an older rust version
+ledger_secure_sdk_sys = {version= "=1.5.3"}
 
 # once_cell defined here just to lock the version. Other dependencies may try to go to 1.19 which is incompatabile with
 # ledger at this time. 1.19 removes "atomic-polyfill" and replaces it with "portable-atomic" which can not build due to
 # target mismatches.
 once_cell = { version = "=1.18.0", default-features = false }
 
 [package.metadata.cargo-machete]
-ignored = ["once_cell"]
+ignored = ["once_cell", "ledger_secure_sdk_sys"]
 
 [profile.release]
 opt-level = 'z'