Merge branch 'v2-prototype' into refactor/move-spawn-switch-to-utils

* v2-prototype: (66 commits)
  Run prettier
  Remove unused variable
  Fix linting issues
  Change shouldRenderHeader prop to shouldHideHeader
  Get build and tests to pass
  typo
  Apply prettier
  Update contracts tests after rebase
  Apply various fixes based on PR feedback
  Document debug_increaseTime method and fix typo in devnet README
  Use an enum for ProviderType in contracts/src/utils/web3_wrapper
  Update contracts package README
  Update relevant changelogs
  Remove global gas estimate buffer
  Add Async suffix to relevant assertions
  Fix linter errors
  Update package.json and yarn.lock
  Update more things to work with both Geth and Ganache
  Small fixes and cleanup
  Add additional gas to calls to fillOrderNoThrow
  ...

# Conflicts:
#	packages/order-watcher/src/order_watcher/order_watcher.ts
#	packages/react-docs/src/components/type.tsx
#	packages/website/ts/components/ui/lifecycle_raised_button.tsx
#	packages/website/ts/components/wallet/wallet.tsx

16 files changed, 260 insertions, 0 deletions

diff --git a/packages/devnet/Dockerfile b/packages/devnet/Dockerfile
new file mode 100644
index 000000000..8e276d605
--- /dev/null
+++ b/packages/devnet/Dockerfile
@@ -0,0 +1,25 @@
+FROM alpine:3.7
+
+RUN \
+  apk add --update go git make gcc musl-dev linux-headers ca-certificates && \
+  # TODO(albrow): Change the Git URL and branch once we have all relvant PRs
+  # merged to upstream.
+  git clone --depth 1 --branch '0x-testing' https://github.com/0xProject/go-ethereum && \
+  (cd go-ethereum && make geth) && \
+  cp go-ethereum/build/bin/geth /geth && \
+  apk del go git make gcc musl-dev linux-headers && \
+  rm -rf /go-ethereum && rm -rf /var/cache/apk/*
+
+RUN mkdir ~/devnet
+WORKDIR ~/devnet
+
+COPY genesis.json .
+COPY node0/ ./node0
+COPY run.sh .
+
+RUN /geth --datadir node0/ init genesis.json
+
+EXPOSE 8501
+EXPOSE 30310
+
+ENTRYPOINT ./run.sh
diff --git a/packages/devnet/README.md b/packages/devnet/README.md
new file mode 100644
index 000000000..f0b165cbd
--- /dev/null
+++ b/packages/devnet/README.md
@@ -0,0 +1,110 @@
+## 0x Devnet
+
+A private, single-node PoA Ethereum network for testing purposes only. It uses
+Geth and the PoA implementation called "Clique".
+
+## Installation
+
+The devnet requires Docker to run (the latest version is recommended).
+
+In the package root directory, run:
+
+```
+docker build -t 0x-devnet .
+```
+
+## Usage
+
+To start the network, run:
+
+```
+docker run -it --rm -p 8501:8501 0x-devnet
+```
+
+Depending on your OS and how you installed docker, you may need to prefix any
+docker commands with `sudo`.
+
+The Docker container exposes the JSON RPC API at port 8501, and this is the
+primary way you are expected to interact with the devnet. The following
+endpoints are supported: `personal,db,eth,net,web3,txpool,miner,debug`.
+
+You can stop the network with `docker stop` and it will automatically clean up
+after itself. (`docker stop` typically requires you to use `docker ps` to find
+the name of the currently running container).
+
+### Configuration
+
+The devnet network only has a single node and uses PoA instead of PoW. That
+means that one node, called the "sealer", is the ultimate authority for
+validating transactions and adding new blocks to the chain. Since there is no
+PoW it also means that mining does not require significant computational
+resources. You can learn more about PoA and the Geth-specific implementation
+called "Clique" in [EIP-225](https://github.com/ethereum/EIPs/issues/225).
+
+The address of the "sealer" is `0xe8816898d851d5b61b7f950627d04d794c07ca37`. The
+password associated with the account is "password" and the (encrypted) private
+keys are visible in the **node0/keystore** directory. This account is already
+"unlocked" in the Geth node by default, so you can do things like sign and send
+transactions from this account using the JSON RPC endpoints directly.
+
+There are also a number of other addresses that have hard-coded starting
+balances for testing purposes. You can see the details in the **genesis.json**
+file. All of these accounts are also unlocked by default.
+
+### Additional JSON RPC Methods
+
+In addition to the
+[standard JSON RPC methods](https://github.com/ethereum/wiki/wiki/JSON-RPC) and
+the
+[Geth Management API](https://github.com/ethereum/go-ethereum/wiki/Management-APIs)
+The devnet node supports some additional JSON RPC methods:
+
+#### debug_increaseTime
+
+Increases the timestamp of the next mined block.
+
+##### Parameters
+
+`Number` - The number of seconds by which to increase the time offset.
+
+##### Returns
+
+`Number` - The total number of seconds by which the time offset has been
+increased (this includes all calls to `debug_increaseTime`).
+
+##### Example
+
+```js
+// Request
+curl -X POST --data '{"jsonrpc":"2.0","method":"debug_increaseTime","params":[100],"id":67}'
+
+// Result
+{
+  "id":67,
+  "jsonrpc": "2.0",
+  "result": "5000"
+}
+```
+
+### Mining
+
+The node will automatically (nearly instantly) mine a block whenever new
+transactions are added to the transaction pool. If there are no transactions in
+the pool, it will wait.
+
+To stop mining, use the
+[`miner.stop`](https://github.com/ethereum/go-ethereum/wiki/Management-APIs#miner_stop)
+method.
+
+To start mining again, you can use the
+[`miner.start`](https://github.com/ethereum/go-ethereum/wiki/Management-APIs#miner_start)
+JSON RPC method.
+
+## Contributing
+
+We strongly recommend that the community help us make improvements and determine
+the future direction of the protocol. To report bugs within this package, please
+create an issue in this repository.
+
+Please read our [contribution guidelines](../../CONTRIBUTING.md) before getting
+started.
diff --git a/packages/devnet/genesis.json b/packages/devnet/genesis.json
new file mode 100644
index 000000000..90431c31c
--- /dev/null
+++ b/packages/devnet/genesis.json
@@ -0,0 +1,61 @@
+{
+    "config": {
+        "chainId": 50,
+        "homesteadBlock": 1,
+        "eip150Block": 2,
+        "eip150Hash": "0x0000000000000000000000000000000000000000000000000000000000000000",
+        "eip155Block": 3,
+        "eip158Block": 3,
+        "byzantiumBlock": 4,
+        "clique": {
+            "period": 0,
+            "epoch": 30000
+        }
+    },
+    "nonce": "0x0",
+    "timestamp": "0x5af1ffac",
+    "extraData":
+        "0x0000000000000000000000000000000000000000000000000000000000000000e8816898d851d5b61b7f950627d04d794c07ca370000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+    "gasLimit": "0x4c4b400000",
+    "difficulty": "0x1",
+    "mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
+    "coinbase": "0x0000000000000000000000000000000000000000",
+    "alloc": {
+        "0xe8816898d851d5b61b7f950627d04d794c07ca37": {
+            "balance": "0x56BC75E2D63100000"
+        },
+        "0x5409ed021d9299bf6814279a6a1411a7e866a631": {
+            "balance": "0x56BC75E2D63100000"
+        },
+        "0x6ecbe1db9ef729cbe972c83fb886247691fb6beb": {
+            "balance": "0x56BC75E2D63100000"
+        },
+        "0xe36ea790bc9d7ab70c55260c66d52b1eca985f84": {
+            "balance": "0x56BC75E2D63100000"
+        },
+        "0xe834ec434daba538cd1b9fe1582052b880bd7e63": {
+            "balance": "0x56BC75E2D63100000"
+        },
+        "0x78dc5d2d739606d31509c31d654056a45185ecb6": {
+            "balance": "0x56BC75E2D63100000"
+        },
+        "0xa8dda8d7f5310e4a9e24f8eba77e091ac264f872": {
+            "balance": "0x56BC75E2D63100000"
+        },
+        "0x06cef8e666768cc40cc78cf93d9611019ddcb628": {
+            "balance": "0x56BC75E2D63100000"
+        },
+        "0x4404ac8bd8f9618d27ad2f1485aa1b2cfd82482d": {
+            "balance": "0x56BC75E2D63100000"
+        },
+        "0x7457d5e02197480db681d3fdf256c7aca21bdc12": {
+            "balance": "0x56BC75E2D63100000"
+        },
+        "0x91c987bf62d25945db517bdaa840a6c661374402": {
+            "balance": "0x56BC75E2D63100000"
+        }
+    },
+    "number": "0x0",
+    "gasUsed": "0x0",
+    "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000"
+}
diff --git a/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-08.903003751Z--5409ed021d9299bf6814279a6a1411a7e866a631 b/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-08.903003751Z--5409ed021d9299bf6814279a6a1411a7e866a631
new file mode 100644
index 000000000..32c4002e0
--- /dev/null
+++ b/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-08.903003751Z--5409ed021d9299bf6814279a6a1411a7e866a631
@@ -0,0 +1 @@
+{"address":"5409ed021d9299bf6814279a6a1411a7e866a631","crypto":{"cipher":"aes-128-ctr","ciphertext":"7c7bdd62b303eb3a42d5d8e935825ed5a05a47cb2cef71e346c61b1bd582f1aa","cipherparams":{"iv":"7fd6c9d9f9893f2c480735b5386b6d75"},"kdf":"scrypt","kdfparams":{"dklen":32,"n":262144,"p":1,"r":8,"salt":"79cc86edc3a668845a68fabb3913710b7504922e47aac8513ab3d6a28d090218"},"mac":"8a593ae0d0b964e47625bc964b6d389f5687f5bde631b4913136db4ab1b8083e"},"id":"29f637ba-6a65-4401-a0d1-30e1554bd776","version":3}
diff --git a/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-09.794553183Z--6ecbe1db9ef729cbe972c83fb886247691fb6beb b/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-09.794553183Z--6ecbe1db9ef729cbe972c83fb886247691fb6beb
new file mode 100644
index 000000000..ba84ccfd2
--- /dev/null
+++ b/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-09.794553183Z--6ecbe1db9ef729cbe972c83fb886247691fb6beb
@@ -0,0 +1 @@
+{"address":"6ecbe1db9ef729cbe972c83fb886247691fb6beb","crypto":{"cipher":"aes-128-ctr","ciphertext":"ecaf4f2839d74d92e2cb87c2fc7d52862661b46e697d70acfbe43f0893db73ed","cipherparams":{"iv":"7641c3a107228f8a901c07a07ea1f70d"},"kdf":"scrypt","kdfparams":{"dklen":32,"n":262144,"p":1,"r":8,"salt":"c67c9fb30648df6985c0490b6603382147e7dc1ea28ca8c934af4a453ec0555b"},"mac":"985dca9ce65ad400fa4c9009742be2d409f402fe05203fc1278cfd1451729e8d"},"id":"e8634edc-08e6-415e-8d65-7985c4c4a05c","version":3}
diff --git a/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-10.696351411Z--e36ea790bc9d7ab70c55260c66d52b1eca985f84 b/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-10.696351411Z--e36ea790bc9d7ab70c55260c66d52b1eca985f84
new file mode 100644
index 000000000..e889c38b3
--- /dev/null
+++ b/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-10.696351411Z--e36ea790bc9d7ab70c55260c66d52b1eca985f84
@@ -0,0 +1 @@
+{"address":"e36ea790bc9d7ab70c55260c66d52b1eca985f84","crypto":{"cipher":"aes-128-ctr","ciphertext":"49f89d7d612049f5f3581fc7c97d32ec9c9a2ca3c11165587139f16bfb29de6b","cipherparams":{"iv":"9767e0687a097c5b57e9cb30eec9bc0a"},"kdf":"scrypt","kdfparams":{"dklen":32,"n":262144,"p":1,"r":8,"salt":"3e8f23332df99d519b602a0f6f4724338ba3fd9e7e313c337a92ffd1cafa19f1"},"mac":"4892051a669d45bb7de32a5eab63ee8fe52485a02218ce1806515da2adbd6584"},"id":"3488ad36-4a9d-4282-8651-7939b822429d","version":3}
diff --git a/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-11.479938556Z--e834ec434daba538cd1b9fe1582052b880bd7e63 b/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-11.479938556Z--e834ec434daba538cd1b9fe1582052b880bd7e63
new file mode 100644
index 000000000..c12742c54
--- /dev/null
+++ b/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-11.479938556Z--e834ec434daba538cd1b9fe1582052b880bd7e63
@@ -0,0 +1 @@
+{"address":"e834ec434daba538cd1b9fe1582052b880bd7e63","crypto":{"cipher":"aes-128-ctr","ciphertext":"a8ae3896739c63fc3bfe034277f6a1924a1c0ddc3f6747391dada8e61e15a928","cipherparams":{"iv":"f4f4d786cd3650a428a8bac5a6c824b1"},"kdf":"scrypt","kdfparams":{"dklen":32,"n":262144,"p":1,"r":8,"salt":"9acecc321bcab9b69ffdea494b8894ad0221c30f05c17d2302e315db8708ecc6"},"mac":"fc416b8f539fdc1e39e87a3bd2a69b04455875de701ced60cc8948b222171380"},"id":"0d9703e8-14fc-45d0-a425-2c40b8ae846a","version":3}
diff --git a/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-12.260348580Z--78dc5d2d739606d31509c31d654056a45185ecb6 b/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-12.260348580Z--78dc5d2d739606d31509c31d654056a45185ecb6
new file mode 100644
index 000000000..691e31dcf
--- /dev/null
+++ b/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-12.260348580Z--78dc5d2d739606d31509c31d654056a45185ecb6
@@ -0,0 +1 @@
+{"address":"78dc5d2d739606d31509c31d654056a45185ecb6","crypto":{"cipher":"aes-128-ctr","ciphertext":"25e90e593f08e9e3adc426c8685d90db5d1c04957e9dc8d5fab4ae30c3306b61","cipherparams":{"iv":"72ece22297a27363e795b678bcbd6be5"},"kdf":"scrypt","kdfparams":{"dklen":32,"n":262144,"p":1,"r":8,"salt":"2201502b9d3c4e2076d9d15bfd9da3a6c75d9e2e574aabb29c3bc5a3b5ec55a5"},"mac":"13d709ed4bd2f5bf4973fc1373f8434835f0d12dc99b32c6fc14d9df7f41c62d"},"id":"3902dff4-5681-4646-b825-849f96efeec5","version":3}
diff --git a/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-13.178294829Z--a8dda8d7f5310e4a9e24f8eba77e091ac264f872 b/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-13.178294829Z--a8dda8d7f5310e4a9e24f8eba77e091ac264f872
new file mode 100644
index 000000000..9054e0019
--- /dev/null
+++ b/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-13.178294829Z--a8dda8d7f5310e4a9e24f8eba77e091ac264f872
@@ -0,0 +1 @@
+{"address":"a8dda8d7f5310e4a9e24f8eba77e091ac264f872","crypto":{"cipher":"aes-128-ctr","ciphertext":"0d67c13cf0b130e8ffa1aaca5df372f727164e633f8e0e28a3e54d0884ffb568","cipherparams":{"iv":"619cd539cda9f40abb45bba00b5fe53d"},"kdf":"scrypt","kdfparams":{"dklen":32,"n":262144,"p":1,"r":8,"salt":"4effcd9b6fe71ee31cfe9057290154329b9af3acb6dcc46be7f78b5b9dcd3f42"},"mac":"c6eecd25944f4250b7b875d76bfbb60cc4e8db1d081621d1a2ddb72ea4e52a6d"},"id":"556bd3f1-1e5b-47a4-9b6e-448b9989d7d3","version":3}
diff --git a/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-13.960499696Z--06cef8e666768cc40cc78cf93d9611019ddcb628 b/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-13.960499696Z--06cef8e666768cc40cc78cf93d9611019ddcb628
new file mode 100644
index 000000000..0870638dd
--- /dev/null
+++ b/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-13.960499696Z--06cef8e666768cc40cc78cf93d9611019ddcb628
@@ -0,0 +1 @@
+{"address":"06cef8e666768cc40cc78cf93d9611019ddcb628","crypto":{"cipher":"aes-128-ctr","ciphertext":"38c9ca150932dc8c5ec5c65796425b2de98295cae64db08b816da2c06fc52c20","cipherparams":{"iv":"512127e8e606c481612473e7bc4d38f1"},"kdf":"scrypt","kdfparams":{"dklen":32,"n":262144,"p":1,"r":8,"salt":"16c4cabfd13cae2df66d8ff9acc7f503c95c808b00d0bb6a12932203889c679b"},"mac":"52297b496e8751627dea1ee17bf5cbea1926f90bcde3ffc8baa089184672f875"},"id":"31102097-86e4-4e19-ad73-03c3de67bf3b","version":3}
diff --git a/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-14.757010386Z--4404ac8bd8f9618d27ad2f1485aa1b2cfd82482d b/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-14.757010386Z--4404ac8bd8f9618d27ad2f1485aa1b2cfd82482d
new file mode 100644
index 000000000..5f28db78f
--- /dev/null
+++ b/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-14.757010386Z--4404ac8bd8f9618d27ad2f1485aa1b2cfd82482d
@@ -0,0 +1 @@
+{"address":"4404ac8bd8f9618d27ad2f1485aa1b2cfd82482d","crypto":{"cipher":"aes-128-ctr","ciphertext":"ca7aedbacc960fc0fcb418606d7bdf042c36cc2808a5c94ac222cc0b44a9970d","cipherparams":{"iv":"3b1fe5da1cf5d6cd2ceaaf24c008c897"},"kdf":"scrypt","kdfparams":{"dklen":32,"n":262144,"p":1,"r":8,"salt":"a94e4d41d77ff6dc54beda30c7a46d8f3cc312ebeffa0352d679f7e3fc5301dc"},"mac":"9a82bf60103d05878f8af3c07765c22cba3df9b1c4376eaf859e47b805666e42"},"id":"ab68c67b-e15a-4ade-b3d9-2180a32b28fe","version":3}
diff --git a/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-15.554233052Z--7457d5e02197480db681d3fdf256c7aca21bdc12 b/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-15.554233052Z--7457d5e02197480db681d3fdf256c7aca21bdc12
new file mode 100644
index 000000000..2a2c0194a
--- /dev/null
+++ b/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-15.554233052Z--7457d5e02197480db681d3fdf256c7aca21bdc12
@@ -0,0 +1 @@
+{"address":"7457d5e02197480db681d3fdf256c7aca21bdc12","crypto":{"cipher":"aes-128-ctr","ciphertext":"720dcc2889c7b3636f9f659650181b0d46d82420460e23454277273f528baaee","cipherparams":{"iv":"1510028e2b9988d1a73b71cbb692d085"},"kdf":"scrypt","kdfparams":{"dklen":32,"n":262144,"p":1,"r":8,"salt":"5db2b62f4d1f55a3f24c014c4f23f3ec9a2992dca6c2a89c24a566f99a079396"},"mac":"22c6fb134fd0a748195ea83e9ccb490ab2c9a3e8761f9d74ea6d02abbdeb8a43"},"id":"704c31f8-8ca2-4b49-9fdc-5923f5712dad","version":3}
diff --git a/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-16.342711541Z--91c987bf62d25945db517bdaa840a6c661374402 b/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-16.342711541Z--91c987bf62d25945db517bdaa840a6c661374402
new file mode 100644
index 000000000..edc6d7531
--- /dev/null
+++ b/packages/devnet/node0/keystore/UTC--2018-05-11T21-29-16.342711541Z--91c987bf62d25945db517bdaa840a6c661374402
@@ -0,0 +1 @@
+{"address":"91c987bf62d25945db517bdaa840a6c661374402","crypto":{"cipher":"aes-128-ctr","ciphertext":"8f461f3c74643f382f7fc1f71719d5a89ed8cf75854d8a1b53e133997b53a386","cipherparams":{"iv":"cf595fb7680d36b4f5a01599ee54d2d1"},"kdf":"scrypt","kdfparams":{"dklen":32,"n":262144,"p":1,"r":8,"salt":"73a9e599369d2bfaedd044559415147240c3517f6cd1dec8f77a98993d1ceaf8"},"mac":"c8be4dc59ad28d40f7b549a6b72834d149c84d67dc35e687676bbee0e07be395"},"id":"21cca6fb-7876-4e39-a986-a0a37f90da6d","version":3}
diff --git a/packages/devnet/node0/keystore/UTC--2018-05-15T21-50-24.532037737Z--e8816898d851d5b61b7f950627d04d794c07ca37 b/packages/devnet/node0/keystore/UTC--2018-05-15T21-50-24.532037737Z--e8816898d851d5b61b7f950627d04d794c07ca37
new file mode 100644
index 000000000..cd2c97a88
--- /dev/null
+++ b/packages/devnet/node0/keystore/UTC--2018-05-15T21-50-24.532037737Z--e8816898d851d5b61b7f950627d04d794c07ca37
@@ -0,0 +1 @@
+{"address":"e8816898d851d5b61b7f950627d04d794c07ca37","crypto":{"cipher":"aes-128-ctr","ciphertext":"1ff4add6955cba7ddaf29f66d7d21c5e1d714ef6191fbc651ae60f2ea3c95e8f","cipherparams":{"iv":"3ff869fbdbe1a523cdb327780365976e"},"kdf":"scrypt","kdfparams":{"dklen":32,"n":262144,"p":1,"r":8,"salt":"7372dbae5fb318f8684902e099c311d4188721d677974d729711762c7ef6030c"},"mac":"485fa5dc701067782baa1589716a53110c7f917eb259e35ebca7265bbb7150b1"},"id":"89edb004-5b00-4607-a3af-a0d9ab9b1c34","version":3}
\ No newline at end of file
diff --git a/packages/devnet/node0/password.txt b/packages/devnet/node0/password.txt
new file mode 100644
index 000000000..9842d2661
--- /dev/null
+++ b/packages/devnet/node0/password.txt
@@ -0,0 +1,11 @@
+password
+password
+password
+password
+password
+password
+password
+password
+password
+password
+password
diff --git a/packages/devnet/run.sh b/packages/devnet/run.sh
new file mode 100755
index 000000000..85d223c61
--- /dev/null
+++ b/packages/devnet/run.sh
@@ -0,0 +1,42 @@
+set -e
+
+# Create log directory for Geth
+mkdir -p /var/log
+
+# Start Geth in background and redirect output to log file
+/geth \
+    --verbosity 5 \
+    --datadir node0/ \
+    --syncmode 'full' \
+    --nat none \
+    --nodiscover \
+    --port 30310 \
+    --txpool.journal '' \
+    --rpc \
+    --rpcaddr '0.0.0.0' \
+    --rpcport 8501 \
+    --rpcapi 'personal,db,eth,net,web3,txpool,miner,debug' \
+    --networkid 50 \
+    --gasprice '2000000000' \
+    --targetgaslimit '0x4c4b400000' \
+    --mine \
+    --etherbase '0xe8816898d851d5b61b7f950627d04d794c07ca37' \
+    --unlock '0xe8816898d851d5b61b7f950627d04d794c07ca37,0x5409ed021d9299bf6814279a6a1411a7e866a631,0x6ecbe1db9ef729cbe972c83fb886247691fb6beb,0xe36ea790bc9d7ab70c55260c66d52b1eca985f84,0xe834ec434daba538cd1b9fe1582052b880bd7e63,0x78dc5d2d739606d31509c31d654056a45185ecb6,0xa8dda8d7f5310e4a9e24f8eba77e091ac264f872,0x06cef8e666768cc40cc78cf93d9611019ddcb628,0x4404ac8bd8f9618d27ad2f1485aa1b2cfd82482d,0x7457d5e02197480db681d3fdf256c7aca21bdc12,0x91c987bf62d25945db517bdaa840a6c661374402' \
+    --password=node0/password.txt \
+    > /var/log/geth &
+
+# Wait for Geth to unlock the first account
+sleep 10
+
+# Send some transactions.
+# HACK(albrow): 🐉 We have to do this so that debug.setHead works correctly.
+# (Geth does not seem to like debug.setHead(0), so by sending some transactions
+# we increase the current block number beyond 0). Additionally, some tests seem
+# to break when there are fewer than 3 blocks in the chain. (We have no idea
+# why, but it was consistently reproducible).
+/geth --datadir node0/ attach --exec 'eth.sendTransaction({"from": "0x5409ED021D9299bf6814279A6A1411A7e866A631", "to": "0x84bd1cfa409cb0bb9b23b8b1a33515b4ac00a0af", "value": "0x1"})'
+/geth --datadir node0/ attach --exec 'eth.sendTransaction({"from": "0x5409ED021D9299bf6814279A6A1411A7e866A631", "to": "0x84bd1cfa409cb0bb9b23b8b1a33515b4ac00a0af", "value": "0x1"})'
+/geth --datadir node0/ attach --exec 'eth.sendTransaction({"from": "0x5409ED021D9299bf6814279A6A1411A7e866A631", "to": "0x84bd1cfa409cb0bb9b23b8b1a33515b4ac00a0af", "value": "0x1"})'
+
+# Use tail to re-attach to the log file and actually see the output.
+tail -f /var/log/geth