glyphSet is required to load glyphs

[typemytype]

path = 'path/to/a/compressed.ufoz'  # a zipped ufo

from defcon import Font

f = Font(path)
print(f.layers.defaultLayer._glyphSet)
# without loading all glyphs
f.save()
# save will reset the _glyphSet object to None
print(f.layers.defaultLayer._glyphSet)
# but still not glyphs loaded
print(f.layers.defaultLayer._glyphs)
# but the font has some glyphName to be loaded
print(f.layers.defaultLayer.keys())

I dont know what the best option is: zipped ufozz are already slow as hell and now all glyphs needs to be loaded while reading for all al layers....

I understand the glyphSet object needs to be reset due to how zips work.
Is an immutable version possible?

This is a serious bug and makes ufoz not reliable...

[typemytype]

@anthrotype (to be sure you see this :) )

[anthrotype]

Oh yeah I saw it. Gimme some time to wrap my head around this

[typemytype]

This could also be a ufoLib issue, as a glyphSet in a zipped file system is not able to be kept as a reference to load unloaded data...

[typesupply]

I’ll take a look tomorrow as well.

[typesupply]

Quick update: I've done some thinking and have a plan to fix this. I'll update everyone here when it is ready.

[benkiel]

Fixed in #220