fontTools/merge/base.py: AttributeError: type object 'VarStore' has no attribute 'mergeMap'

[sdas92]

Defect Report

Title

fontTools/merge/base.py: AttributeError: type object 'VarStore' has no attribute 'mergeMap'

Font

Merging Fonts fails due to fontTool's attribute error.

Where the font came from, and when

https://fonts.google.com/noto

Font Version

N/A

OS name and version

Linux Mint, Python3.12 (also tried on Python3.9)

Application name and version

Tried main branch and latest release too

Issue

Summarize the issue briefly -- AttributeError: type object 'VarStore' has no attribute 'mergeMap'

1. Steps to reproduce

PYTHONPATH='/usr/lib/python3/dist-packages/nototools' python3 merge-fonts.py -d toBeMerged/ -o NotoSansMerged.ttf

2. Observed results

Merging 8 Fonts...
Traceback (most recent call last):
File "/home/somnath/myContents/softwares/fonts/merge-fonts.py", line 142, in
main()
File "/home/somnath/myContents/softwares/fonts/merge-fonts.py", line 124, in main
font = merger.merge(valid_files)
^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/fontTools/merge/init.py", line 117, in merge
table = clazz(tag).merge(self, tables)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/fontTools/merge/base.py", line 79, in merge
return m.mergeObjects(self, self.mergeMap, tables)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/fontTools/merge/init.py", line 154, in mergeObjects
value = mergeLogic(getattr(table, key, NotImplemented) for table in tables)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/fontTools/merge/base.py", line 61, in mergeObjects
value = mergeLogic(getattr(table, key, NotImplemented) for table in lst)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/fontTools/merge/base.py", line 44, in mergeObjects
logic = clazz.mergeMap
^^^^^^^^^^^^^^

3. Expected results

Should have been merged

4. Additional information

Not a problem of nototools itself, it is from fontTool's base.py which doesnot have an attribute named: clazz.mergeMap

Character data

N/A

Screenshot

N/A