Inspired by erc20-subgraph, erc20-subgraph-approvals indexes all approvals on ERC20-compliant tokens.
In a first terminal, have a local instance of ganache running on IP address 0.0.0.0:
ganache-cli -h 0.0.0.0
Then in a second terminal, fire up The Graph's local dockerised Graph Node:
$ cd ..
$ git clone git@github.com:graphprotocol/graph-node.git
$ cd graph-node/docker
$ docker-compose up
Be sure to note the additional instructions here in case you are running on a non-intel MacBook.
Finally, in a third terminal, navigate back to the erc20-subgraph-approvals repo and deploy the subgraph locally:
$ cd ../../erc20-subgraph-approvals
yarn install && yarn codegen && yarn build && yarn create-local && yarn deploy-local
The subgraph can now be queried at http://localhost:8000/subgraphs/name/gosuto-inzasheru/erc20-subgraph-approvals/.
Ganache (raw RPC calls) logs to stdout in its terminal, as does the graph node (via docker stdout).