build: pin nostr-bench submodule in nix and cloud bench pipeline

nix/nostr-bench.nix

@@ -1,22 +1,19 @@
 {
   lib,
-  fetchFromGitHub,
   rustPlatform,
   pkgsCross,
   runCommand,
   staticX86_64Musl ? false,
+  nostrBenchSrc ? ./nostr-bench,
 }: let
   selectedRustPlatform =
     if staticX86_64Musl
     then pkgsCross.musl64.rustPlatform
     else rustPlatform;
 
-  srcBase = fetchFromGitHub {
-    owner = "rnostr";
-    repo = "nostr-bench";
-    rev = "d3ab701512b7c871707b209ef3f934936e407963";
-    hash = "sha256-F2qg1veO1iNlVUKf1b/MV+vexiy4Tt+w2aikDDbp7tU=";
-  };
+  # Keep the submodule path as-is so devenv can evaluate it correctly.
+  # `lib.cleanSource` treats submodule contents as untracked in this context.
+  srcBase = nostrBenchSrc;
 
   src =
     if staticX86_64Musl
@@ -31,7 +28,7 @@ in
   selectedRustPlatform.buildRustPackage (
     {
       pname = "nostr-bench";
-      version = "0.4.0";
+      version = "0.5.0-parrhesia";
 
       inherit src;
 
@@ -46,11 +43,11 @@ in
       };
     }
     // lib.optionalAttrs staticX86_64Musl {
-      cargoHash = "sha256-aL8XSBJ8sHl7CGh9SkOoI+WlAHKrdij2DfvZAWIKgKY=";
+      cargoHash = "sha256-098BUjDLiezoFXs7fF+w7NQM+DPPfHMo1HGx3nV2UZM=";
       CARGO_BUILD_TARGET = "x86_64-unknown-linux-musl";
       RUSTFLAGS = "-C target-feature=+crt-static";
     }
     // lib.optionalAttrs (!staticX86_64Musl) {
-      cargoHash = "sha256-mh9UdYhZl6JVJEeDFnY5BjfcK+PrWBBEn1Qh7/ZX17k=";
+      cargoHash = "sha256-x2pnxJL2nwni4cpSaUerDOfhdcTKJTyABYjPm96dAC0=";
     }
   )