"DeprecationWarning: Use of 'SCRAPY_'-prefixed environment variables" always shows

[nyov]

ScrapyDeprecationWarning: Use of 'SCRAPY_'-prefixed environment variables to override settings is deprecated.

This deprecation warning can't be shut up inside a project.

scrapy/scrapy/utils/project.py

Lines 17 to 19 in 034e2c3

	def inside_project():
	scrapy_module = os.environ.get('SCRAPY_SETTINGS_MODULE')
	if scrapy_module is not None:

This is always true, if inside a project. Because of

scrapy/scrapy/utils/conf.py

Lines 77 to 84 in 034e2c3

	def init_env(project='default', set_syspath=True):
	"""Initialize environment to use command-line tool from inside a project
	dir. This sets the Scrapy settings module and modifies the Python path to
	be able to locate the project module.
	"""
	cfg = get_config()
	if cfg.has_option('settings', project):
	os.environ['SCRAPY_SETTINGS_MODULE'] = cfg.get('settings', project)

We should probably stop "emulating" ENV vars there, and pass this somehow differently.

Additionally, the ScrapyDeprecationWarning for env_overrides is too generic: It never tells you which variable(s) are actually set. This is plain annoying. Please make it more specific.