$ git show datastore-1.0.0:datastore/setup.py | grep -A 4 'REQUIREMENTS = \['
REQUIREMENTS = [
    'google-cloud-core >= 0.24.0, < 0.25dev',
    'google-gax>=0.15.7, <0.16dev',
    'gapic-google-cloud-datastore-v1 >= 0.15.0, < 0.16dev',
]

$ git show logging-1.0.0:logging/setup.py | grep -A 4 'REQUIREMENTS = \['
REQUIREMENTS = [
    'google-cloud-core >= 0.24.0, < 0.25dev',
    'grpcio >= 1.2.0, < 2.0dev',
    'gapic-google-cloud-logging-v2 >= 0.91.0, < 0.92dev',
]

$ git show storage-1.1.0:storage/setup.py | grep -A 5 'REQUIREMENTS = \['
REQUIREMENTS = [
    'google-cloud-core >= 0.24.1, < 0.25dev',
    'google-auth >= 1.0.0',
    'google-resumable-media == 0.0.2',
    'requests >= 2.0.0',
]
$
$ git show storage-1.1.1:storage/setup.py | grep -A 5 'REQUIREMENTS = \['
REQUIREMENTS = [
    'google-cloud-core >= 0.24.1, < 0.25dev',
    'google-auth >= 1.0.0',
    'google-resumable-media == 0.0.2',
    'requests >= 2.0.0',
]

$ git show error-reporting-0.24.2:error_reporting/setup.py | \
> grep -A 4 'REQUIREMENTS = \['
REQUIREMENTS = [
    'google-cloud-core >= 0.24.1, < 0.25dev',
    'google-cloud-logging >= 1.0.0, < 2.0dev',
    'gapic-google-cloud-error-reporting-v1beta1 >= 0.15.0, < 0.16dev'
]

$ git grep "'google-cloud-" -- '*/setup.py' | \
> egrep -v google-cloud-core | \
> egrep -v "name="
error_reporting/setup.py:    'google-cloud-logging >= 1.0.0, < 2.0dev',