https://github.com/CirclesUBI/circles-myxogastria/issues/158

index.js

const CirclesCore = require("@circles/core");
const TokenContract = require("circles-contracts/build/contracts/Token.json");
const Web3 = require("web3");

const privateKey = '';
const provider = new Web3.providers.HttpProvider("http://localhost:8545");
const web3 = new Web3(provider);

const core = new CirclesCore(web3, {
  hubAddress: "0xCfEB869F69431e42cdB54A4F4f105C19C080A601",
  proxyFactoryAddress: "0xD833215cBcc3f914bD1C9ece3EE7BF8B14f841bb",
  safeMasterAddress: "0xC89Ce4735882C9F0f0FE26686c53074E09B0D550",
  apiServiceEndpoint: "http://api.circles.local",
  graphNodeEndpoint: "http://graph.circles.local",
  relayServiceEndpoint: "https://relay.circles.garden",
  subgraphName: "CirclesUBI/circles-subgraph",
});

const account = web3.eth.accounts.privateKeyToAccount(privateKey);

async function run() {
  const nonce = parseInt(account.address.slice(30), 16);
  const safeAddress = await core.safe.predictAddress(account, {
    nonce,
  });
  console.log(`safeAddress=${safeAddress}, nonce=${nonce}, address=${account.address}`);
}

run();

log.txt

1. Original Safe address of user @adz with owner 0xaA2F8f57730d41BB145D168F6A689fDDa737a081:
0x9a0bbbbd3789f184CA88f2F6A40F42406cb842AC

2. Running node script returning 0xEA4e6a595B378C31cd294019b274391c7aE08aB5
$ node index.js
safeAddress=0xEA4e6a595B378C31cd294019b274391c7aE08aB5, nonce=175774342029441, address=0xaA2F8f57730d41BB145D168F6A689fDDa737a081

3. Running python script returning 0x505CcCa1d53028E6e0CDc28b4e8cA7919EA0eeAD
$ python main.py
0x505CcCa1d53028E6e0CDc28b4e8cA7919EA0eeAD

main.py

from gnosis.eth import EthereumClient
from gnosis.eth.constants import NULL_ADDRESS
from gnosis.safe import Safe
from web3 import Web3

ethereum_client = EthereumClient('https://dark-frosty-field.xdai.quiknode.pro')

salt_nonce: int = 175774342029441
owners = ["0xaA2F8f57730d41BB145D168F6A689fDDa737a081"]

safe_creation_tx = Safe.build_safe_create2_tx(ethereum_client,
                                              master_copy_address="0x2CB0ebc503dE87CFD8f0eCEED8197bF7850184ae",
                                              proxy_factory_address="0x8b4404DE0CaECE4b966a9959f134f0eFDa636156",
                                              salt_nonce=salt_nonce,
                                              owners=owners,
                                              threshold=1,
                                              gas_price=Web3.toWei(1, 'gwei'),
                                              payment_token=NULL_ADDRESS,
                                              payment_receiver="0x0276d6d8fB555894f11d933994154D7C37574746",
                                              fallback_handler=NULL_ADDRESS,
                                              payment_token_eth_value=1.0,
                                              fixed_creation_cost=None)

print(safe_creation_tx.safe_address)

package.json

{
  "name": "circles-bug",
  "version": "0.1.0",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "dependencies": {
    "@circles/core": "^2.10.8"
  }
}

requirements.txt

asgiref==3.2.10
asn1crypto==1.4.0
attrs==20.2.0
base58==2.0.1
bitarray==1.2.2
cached-property==1.5.1
certifi==2020.6.20
cffi==1.14.2
chardet==3.0.4
coincurve==13.0.0
cytoolz==0.10.1
Django==3.1.1
django-filter==2.3.0
eth-abi==2.1.1
eth-account==0.5.3
eth-hash==0.2.0
eth-keyfile==0.5.1
eth-keys==0.3.3
eth-rlp==0.2.0
eth-typing==2.2.2
eth-utils==1.9.5
ethereum==2.3.2
future==0.18.2
gnosis-py==2.7.13
hexbytes==0.2.1
idna==2.10
ipfshttpclient==0.6.1
jsonschema==3.2.0
lru-dict==1.1.6
multiaddr==0.0.9
mypy-extensions==0.4.3
netaddr==0.8.0
packaging==20.4
parsimonious==0.8.1
pbkdf2==1.3
protobuf==3.13.0
py-ecc==4.0.0
py-eth-sig-utils==0.4.0
pycparser==2.20
pycryptodome==3.9.8
pyethash==0.1.27
pyparsing==2.4.7
pyrsistent==0.17.0
pysha3==1.0.2
pytz==2020.1
PyYAML==5.3.1
repoze.lru==0.7
requests==2.24.0
rlp==1.2.0
scrypt==0.8.15
six==1.15.0
sqlparse==0.3.1
toolz==0.10.0
urllib3==1.25.10
varint==1.0.2
web3==5.12.1
websockets==8.1