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11 changes: 10 additions & 1 deletion crates/acvm_backend_barretenberg/src/lib.rs
Original file line number Diff line number Diff line change
Expand Up @@ -42,7 +42,16 @@ impl Backend {
}

fn backend_directory(&self) -> PathBuf {
backends_directory().join(&self.name)
// If an explicit path to a backend binary has been provided then
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if let Some(binary_path) = std::env::var_os("NARGO_BACKEND_PATH") {
PathBuf::from(binary_path).parent().unwrap().to_path_buf()
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} else {
backends_directory().join(&self.name)
}
}

fn crs_directory(&self) -> PathBuf {
self.backend_directory().join("crs")
}

fn binary_path(&self) -> PathBuf {
Expand Down
8 changes: 4 additions & 4 deletions crates/acvm_backend_barretenberg/src/proof_system.rs
Original file line number Diff line number Diff line change
Expand Up @@ -26,7 +26,7 @@ impl Backend {
write_to_file(serialized_circuit.as_bytes(), &circuit_path);

let binary_path = assert_binary_exists(self);
GatesCommand { crs_path: self.backend_directory(), bytecode_path: circuit_path }
GatesCommand { crs_path: self.crs_directory(), bytecode_path: circuit_path }
.run(&binary_path)
}

Expand Down Expand Up @@ -82,7 +82,7 @@ impl Backend {
// Create proof and store it in the specified path
ProveCommand {
verbose: true,
crs_path: self.backend_directory(),
crs_path: self.crs_directory(),
is_recursive,
bytecode_path,
witness_path,
Expand Down Expand Up @@ -141,7 +141,7 @@ impl Backend {
let binary_path = assert_binary_exists(self);
WriteVkCommand {
verbose: false,
crs_path: self.backend_directory(),
crs_path: self.crs_directory(),
is_recursive,
bytecode_path,
vk_path_output: vk_path.clone(),
Expand All @@ -151,7 +151,7 @@ impl Backend {
// Verify the proof
let valid_proof = VerifyCommand {
verbose: false,
crs_path: self.backend_directory(),
crs_path: self.crs_directory(),
is_recursive,
proof_path,
vk_path,
Expand Down
4 changes: 2 additions & 2 deletions crates/acvm_backend_barretenberg/src/smart_contract.rs
Original file line number Diff line number Diff line change
Expand Up @@ -27,7 +27,7 @@ impl Backend {
let binary_path = assert_binary_exists(self);
WriteVkCommand {
verbose: false,
crs_path: self.backend_directory(),
crs_path: self.crs_directory(),
is_recursive: false,
bytecode_path,
vk_path_output: vk_path.clone(),
Expand All @@ -37,7 +37,7 @@ impl Backend {
let contract_path = temp_directory_path.join("contract");
ContractCommand {
verbose: false,
crs_path: self.backend_directory(),
crs_path: self.crs_directory(),
vk_path,
contract_path: contract_path.clone(),
}
Expand Down