Temp 22: Fix Android cross-compilation issues

.github/workflows/audit.yml

@@ -16,7 +16,10 @@ jobs:
       run:
         working-directory: bdk-ffi
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions-rs/audit-check@v1
-        with:
-          token: ${{ secrets.GITHUB_TOKEN }}
+      - name: "Check out PR branch"
+        uses: actions/checkout@v3
+
+      - name: "Run audit"
+        run: |
+          cargo install cargo-audit
+          cargo-audit audit

bdk-ffi/Cargo.toml

@@ -19,8 +19,13 @@ default = ["uniffi/cli"]
 [dependencies]
 bdk = { version = "1.0.0-alpha.2", features = ["all-keys", "keys-bip39"] }
 bdk_file_store = { version = "0.2.0" }
-bdk_esplora = { version = "0.4.0" }
+# TODO 22: the bdk_esplora crate uses esplora_client which uses reqwest for async. By default it uses the system
+# openssl library, which is creating problems for cross-compilation. I'd rather use rustls, but it's hidden
+# behind a feature flag. We need to look into whether openssl-sys is really required by bdk or if using rustls
+# would work just as well. This here is a temporary workaround which removes the async feature on the bdk_esplora crate.
+bdk_esplora = { version = "0.4.0", default-features = false, features = ["std", "blocking"] }
 uniffi = { version = "=0.23.0" }
+# reqwest = { version = "0.11", default-features = false, features = ["rustls-tls"] }
 
 [build-dependencies]
 uniffi = { version = "=0.23.0", features = ["build"] }