add full flow using keccak256-circom. The constraint generation fails, debugging circom & sonobe & arkworks/circom-compat

circuit/keccak-chain.circom

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+pragma circom 2.0.0;
+
+include "node_modules/keccak256-circom/circuits/keccak.circom";
+
+template KeccakChain () {
+    signal input ivc_input[32*8];
+    signal output ivc_output[32*8];   
+
+    component keccak = Keccak(32*8, 32*8);
+
+    for (var i=0; i<32*8; i++) {
+        keccak.in[i] <== ivc_input[i];
+    }
+    for (var i=0; i<32*8; i++) {
+    	ivc_output[i] <== keccak.out[i];
+    }
+}
+
+// for a input & output of 32 bytes:
+component main { public [ivc_input] } = KeccakChain();
+

circuit/package.json

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+{
+  "name": "fakeid-demo",
+  "version": "0.0.1",
+  "description": "iden3 circuits",
+  "main": "index.js",
+  "scripts": {
+    "clean": "rm -fR dist",
+    "build": "npm run clean && ./node_modules/.bin/tsc --strictNullChecks",
+    "test": "./node_modules/.bin/mocha --timeout 5000 -p -r ts-node/register '*.test.ts'",
+    "postinstall":"cd node_modules/keccak256-circom && npm install"
+  },
+  "license": "GPL-3.0",
+  "dependencies": {
+    "circomlib": "^2.0.5",
+    "keccak256-circom": "git://github.com/vocdoni/keccak256-circom.git"
+
+  }
+}