feature guard masp "download-params" in the sdk

apps/Cargo.toml

@@ -63,7 +63,7 @@ integration = []
 
 [dependencies]
 namada = {path = "../shared", features = ["multicore", "http-client", "tendermint-rpc"]}
-namada_sdk = {path = "../sdk", default-features = false, features = ["wasm-runtime"]}
+namada_sdk = {path = "../sdk", default-features = false, features = ["wasm-runtime", "download-params"]}
 namada_test_utils = {path = "../test_utils", optional = true}
 ark-serialize.workspace = true
 ark-std.workspace = true

sdk/Cargo.toml

@@ -15,7 +15,7 @@ version.workspace = true
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [features]
-default = ["tendermint-rpc"]
+default = ["tendermint-rpc", "download-params"]
 
 multicore = ["masp_proofs/multicore"]
 
@@ -53,6 +53,9 @@ testing = [
   "async-client",
 ]
 
+# Download MASP params if they're not present
+download-params = ["masp_proofs/download-params"]
+
 [dependencies]
 async-trait = {version = "0.1.51", optional = true}
 bimap.workspace = true
@@ -67,7 +70,7 @@ fd-lock = { workspace = true, optional = true }
 futures.workspace = true
 itertools.workspace = true
 masp_primitives.workspace = true
-masp_proofs = { workspace = true, features = ["download-params"] }
+masp_proofs.workspace = true
 namada_core = {path = "../core", default-features = false, features = ["rand"]}
 namada_ethereum_bridge = {path = "../ethereum_bridge", default-features = false}
 namada_proof_of_stake = {path = "../proof_of_stake", default-features = false}

sdk/src/masp.rs

@@ -146,6 +146,7 @@ fn load_pvks() -> (
     let [spend_path, convert_path, output_path] =
         [SPEND_NAME, CONVERT_NAME, OUTPUT_NAME].map(|p| params_dir.join(p));
 
+    #[cfg(feature = "download-params")]
     if !spend_path.exists() || !convert_path.exists() || !output_path.exists() {
         let paths = masp_proofs::download_masp_parameters(None).expect(
             "MASP parameters were not present, expected the download to \

shared/Cargo.toml

@@ -102,7 +102,7 @@ futures.workspace = true
 itertools.workspace = true
 loupe = {version = "0.1.3", optional = true}
 masp_primitives.workspace = true
-masp_proofs = { workspace = true, features = ["download-params"] }
+masp_proofs.workspace = true
 num256.workspace = true
 orion.workspace = true
 owo-colors = "3.5.0"