Overcommit configuration for Crystal projects

.overcommit.yml

# Sample configuration for https://github.com/sds/overcommit to support Crystal projects

---
verify_signatures: false
PreCommit:
  # NOTE: LineEndings does not work with git versions < 2.x
  # LineEndings:
  #   enabled: true
  YamlLint:
    enabled: true
  YamlSyntax:
    enabled: true
  TrailingWhitespace:
    enabled: true
  CrystalFormat:
    enabled: true
    description: Format with crystal tool format
    required_executable: crystal
    command: ['crystal', 'tool', 'format']
    parallelize: false
    include: '**/*.cr'
  CrystalTest:
    enabled: true
    description: Run tests
    required_executable: crystal
    parallelize: false
    command: ['crystal', 'spec']
    include: '**/*_spec.cr'
...