Add a workaround for setup-arcium not working on 0.6.2

Remove arcup use 0.6.2 call - binary already installed

Fix Node engine warning - use Node 23.6.0 for @noble/hashes 2.0.1

Use Node 22.12.0 LTS instead of unstable 23.x

Author: mikemaccana

.github/workflows/test.yml

@@ -13,17 +13,31 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
-      - name: Install libudev
-        run: sudo apt-get update && sudo apt-get install -y libudev-dev
-
+      # Use setup-arcium@v0.5.4 to install Rust, Solana, Anchor, and arcup
+      # Then override with Arcium 0.6.2 binary since arcup 0.6.2 has bootstrap bug
       - uses: arcium-hq/setup-arcium@v0.5.4
         with:
-          runner-arch-os: x86_64_linux
-          solana-cli-version: 2.3.11
-          arcium-version: 0.6.2
-          anchor-version: 0.32.1
+          runner-arch-os: "x86_64_linux"
+          arcium-version: "0.5.4"
+          solana-cli-version: "2.3.11"
+          anchor-version: "0.32.1"
+          node-version: "22.12.0"
+
+      # Override with Arcium 0.6.2 binary
+      # arcup 0.6.2 has bootstrap bug (panics with "index not found" at arcup/src/config.rs:29:51)
+      # so we download the 0.6.2 binary directly instead of using arcup
+      - name: Override with Arcium CLI 0.6.2
+        run: |
+          curl "https://bin.arcium.com/download/arcium_x86_64_linux_0.6.2" -o ~/.cargo/bin/arcium
+          chmod +x ~/.cargo/bin/arcium
+          arcium --version
 
-      - run: solana --version
+      # Verify Docker is running and can pull images
+      # Arcium requires Docker to run MPC nodes during tests
+      - name: Verify Docker
+        run: |
+          docker info
+          docker ps
 
       - run: npm i
 

Anchor.toml

@@ -21,6 +21,8 @@ wallet = "~/.config/solana/id.json"
 test = "npx tsx tests/election.ts"
 
 [test]
-startup_wait = 90000
+# GitHub Actions environment can be very slow - 300s (5 minutes) allows Solana localnet
+# and Arcium MPC nodes enough time to initialize. Local development typically uses ~90s.
+startup_wait = 300000
 shutdown_wait = 2000
 upgradeable = false

run-tests.bash

@@ -20,8 +20,8 @@ set -euo pipefail
 #  'Program 11111111111111111111111111111111 invoke [3]'
 #  'Allocate: account Address { address: FLpEeHKkzCKwVvC7LMV3GBSLAsmhWSvEx2z4PYKWZk6U, base: None } already in use'
 
-# Set correct Arcium version
-arcup use 0.6.2
+# Arcium version is set by directly installing the 0.6.2 binary (in GitHub Actions)
+# or by the user having arcium 0.6.2 in their PATH (local development)
 
 # TODO: Upgrade to Agave 3.x when resolved
 # Currently using Agave 2.3.11 due to Agave 3.x panic with bind-address 0.0.0.0

tests/election.ts

@@ -1,5 +1,6 @@
 import { getSetComputeUnitLimitInstruction } from "@solana-program/compute-budget";
 import { randomBytes } from "crypto";
+import { promises as fs } from "fs";
 import { connect, type Connection } from "solana-kite";
 import {
   type KeyPairSigner,
@@ -24,7 +25,6 @@ import {
 } from "./arcium-solana-kit/helpers.js";
 import * as os from "os";
 import { describe, test, before } from "node:test";
-import assert from "node:assert";
 import {
   getRandomBigInt,
   makeClientSideKeys,
@@ -386,7 +386,7 @@ describe("Election", () => {
         compDefAccount: compDefPDA,
       });
 
-      const instructions = [];
+      const instructions: Array<Instruction> = [];
 
       if (needsComputeBudget) {
         // create_poll circuit requires higher compute budget due to initialization complexity