old_contents: #!/usr/bin/env python3
  # encoding: utf-8
  from setuptools import setup
  
  setup(
      name = "vimiv",
      version = "0.6.1",
      packages = ['vimiv'],
      scripts = ['vimiv/vimiv'],
      install_requires = ['pillow', 'pygobject'],
      description = "An image viewer with vim-like keybindings",
      license = "MIT",
      url = "https://github.com/karlch/vimiv",
  )
  
new_contents: #!/usr/bin/env python3
  # encoding: utf-8
  from setuptools import setup
  
  setup(
      name = "vimiv",
      version = "0.6.1",
      packages = ['vimiv'],
      scripts = ['vimiv/vimiv'],
      install_requires = ['pillow', 'PyGObject'],
      description = "An image viewer with vim-like keybindings",
      license = "MIT",
      url = "https://github.com/karlch/vimiv",
  )
  
subject: Correct case for dependency