Travis builds failing

[mbeacom]

Description

The Travis CI builds are currently failing due to pip dependency conflicts. This needs resolved in order to fix the automated testing builds.

Possible Implementation

Modify current dependency management to use Pipenv to possibly resolve conflicts?

Additional Information

Pipenv graph shows conflicts in version pinning coming from web3.py.

populous has a dependency on web3, which has conflicting dependencies report:

- web3 [required: >=3.16.2, installed: 3.16.4]
    - cytoolz [required: >=0.8.2, installed: 0.9.0]
      - toolz [required: >=0.8.0, installed: 0.9.0]
    - eth-abi [required: >=0.5.0, installed: 0.5.0]
      - eth-utils [required: ==0.7.*, installed: 0.7.4]
        - cytoolz [required: >=0.8.2,<1.0.0, installed: 0.9.0]
          - toolz [required: >=0.8.0, installed: 0.9.0]
        - pysha3 [required: >=1.0.0,<2.0.0, installed: 1.0.2]
    - eth-keyfile [required: >=0.4.0, installed: 0.5.0]
      - cytoolz [required: <1.0.0,>=0.9.0, installed: 0.9.0]
        - toolz [required: >=0.8.0, installed: 0.9.0]
      - eth-keys [required: <1.0.0,>=0.1.0-beta.4, installed: 0.2.0b1]
        - cytoolz [required: <1.0.0,>=0.9.0, installed: 0.9.0]
          - toolz [required: >=0.8.0, installed: 0.9.0]
        - eth-utils [required: >=1.0.0-beta.1,<2.0.0, installed: 0.7.4]
          - cytoolz [required: >=0.8.2,<1.0.0, installed: 0.9.0]
            - toolz [required: >=0.8.0, installed: 0.9.0]
          - pysha3 [required: >=1.0.0,<2.0.0, installed: 1.0.2]
      - eth-utils [required: >=1.0.0-beta.1,<2.0.0, installed: 0.7.4]
        - cytoolz [required: >=0.8.2,<1.0.0, installed: 0.9.0]
          - toolz [required: >=0.8.0, installed: 0.9.0]
        - pysha3 [required: >=1.0.0,<2.0.0, installed: 1.0.2]
      - pycryptodome [required: <4.0.0,>=3.4.7, installed: 3.4.9]
    - eth-keys [required: >=0.1.0-beta.3, installed: 0.2.0b1]
      - cytoolz [required: <1.0.0,>=0.9.0, installed: 0.9.0]
        - toolz [required: >=0.8.0, installed: 0.9.0]
      - eth-utils [required: >=1.0.0-beta.1,<2.0.0, installed: 0.7.4]
        - cytoolz [required: >=0.8.2,<1.0.0, installed: 0.9.0]
          - toolz [required: >=0.8.0, installed: 0.9.0]
        - pysha3 [required: >=1.0.0,<2.0.0, installed: 1.0.2]
    - eth-tester [required: ~=0.1.0b2, installed: 0.1.0b15]
      - cytoolz [required: <1.0.0,>=0.9.0, installed: 0.9.0]
        - toolz [required: >=0.8.0, installed: 0.9.0]
      - eth-keys [required: >=0.1.0b3,<0.2.0, installed: 0.2.0b1]
        - cytoolz [required: <1.0.0,>=0.9.0, installed: 0.9.0]
          - toolz [required: >=0.8.0, installed: 0.9.0]
        - eth-utils [required: >=1.0.0-beta.1,<2.0.0, installed: 0.7.4]
          - cytoolz [required: >=0.8.2,<1.0.0, installed: 0.9.0]
            - toolz [required: >=0.8.0, installed: 0.9.0]
          - pysha3 [required: >=1.0.0,<2.0.0, installed: 1.0.2]
      - eth-utils [required: <1.0.0,>=0.7.1, installed: 0.7.4]
        - cytoolz [required: >=0.8.2,<1.0.0, installed: 0.9.0]
          - toolz [required: >=0.8.0, installed: 0.9.0]
        - pysha3 [required: >=1.0.0,<2.0.0, installed: 1.0.2]
      - rlp [required: >=0.6.0,<1.0.0, installed: 0.6.0]
      - semantic-version [required: >=2.6.0,<3.0.0, installed: 2.6.0]
    - eth-utils [required: >=0.7.1, installed: 0.7.4]
      - cytoolz [required: >=0.8.2,<1.0.0, installed: 0.9.0]
        - toolz [required: >=0.8.0, installed: 0.9.0]
      - pysha3 [required: >=1.0.0,<2.0.0, installed: 1.0.2]
    - pylru [required: >=1.0.9, installed: 1.0.9]
    - pysha3 [required: >=0.3, installed: 1.0.2]
    - requests [required: >=2.12.4, installed: 2.18.4]
      - certifi [required: >=2017.4.17, installed: 2018.1.18]
      - chardet [required: >=3.0.2,<3.1.0, installed: 3.0.4]
      - idna [required: >=2.5,<2.7, installed: 2.6]
      - urllib3 [required: >=1.21.1,<1.23, installed: 1.22]
    - rlp [required: >=0.4.7, installed: 0.6.0]
    - toolz [required: >=0.8.2, installed: 0.9.0]

Validation is failing due to a conflict in dependencies:

• eth-tester pins eth-utils==0.7.*
• eth-keys and eth-keyfile pins eth-utils<2.0.0,>=1.0.0-beta.1

This results in a dependency validation error on Travis.

[mbeacom]

This is resolved via the changes associated with: ethereum/eth-abi#25