reth: init at 1.3.12

This commit adds `reth`, an Ethereum execution client by Paradigm
written in Rust.

This package is adapted from the [nix-community/ethereum.nix package][1]
with a version update, darwin support, and some slight modifications to
better suit the nixpkgs conventions.

Closes #249233

[1]: https://github.com/nix-community/ethereum.nix/blob/main/pkgs/by-name/re/reth/default.nix

pkgs/by-name/re/reth/package.nix

@@ -0,0 +1,47 @@
+{
+  lib,
+  fetchFromGitHub,
+  nix-update-script,
+  rustPlatform,
+}:
+
+rustPlatform.buildRustPackage rec {
+  pname = "reth";
+  version = "1.3.12";
+
+  src = fetchFromGitHub {
+    owner = "paradigmxyz";
+    repo = pname;
+    rev = "v${version}";
+    hash = "sha256-59XUrMaXMiqSELQX8i7eK4Eo8YfGjPVZHT6q+rxoSPs=";
+  };
+
+  cargoHash = "sha256-FHQ+iPcjxwcY7uoZMXlm/lRoVA5E5wRg7qFgJe+VSEc=";
+
+  nativeBuildInputs = [
+    rustPlatform.bindgenHook
+  ];
+
+  # Some tests fail due to I/O that is unfriendly with nix sandbox.
+  checkFlags = [
+    "--skip=builder::tests::block_number_node_config_test"
+    "--skip=builder::tests::launch_multiple_nodes"
+    "--skip=builder::tests::rpc_handles_none_without_http"
+    "--skip=cli::tests::override_trusted_setup_file"
+    "--skip=cli::tests::parse_env_filter_directives"
+  ];
+
+  passthru.updateScript = nix-update-script { };
+
+  meta = {
+    description = "Modular Ethereum execution client in Rust by Paradigm";
+    homepage = "https://github.com/paradigmxyz/reth";
+    license = with lib.licenses; [
+      mit
+      asl20
+    ];
+    mainProgram = "reth";
+    maintainers = with lib.maintainers; [ mitchmindtree ];
+    platforms = lib.platforms.unix;
+  };
+}