get_cached_default_environment should be invalidated if $VIRTUAL_ENV changes

[blueyed]

jedi/jedi/api/environment.py

Lines 190 to 192 in 691a5b6

	@time_cache(seconds=10 * 60) # 10 Minutes
	def get_cached_default_environment():
	return get_default_environment()

This is used by jedi-vim, but when a user changes $VIRTUAL_ENV it should not take 10 minutes to work.

Not sure how to approach this best.

On the one hand a time based cache does not really make sense here, except for when you install a new version, but then it might still take up to 10 minutes to have an effect.

Therefore I suggest changing it to only cache it by the value of $VIRTUAL_ENV.

[davidhalter]

I agree. We could probably just make it possible to clean the cache, rename this function and create a function that checks if $VIRTUAL_ENV changed and in that case clear the cache.

[blueyed]

So it could be cached on the module, and a new function would be added to clear the cache?