Re: thunderbird fails to build

[gary%duzan.org@localhost]

>
> NetBSD 9 amd64, and I have already mostly moved to python 3.10.
>
> Does this build for others?

   I haven't tried, but it looks like this

>   File
> "/tmp/work/mail/thunderbird/work/thunderbird-78.12.0/python/mozbuild/mozbuild/util.py",
> line 785, in HierarchicalStringList
>     class StringListAdaptor(collections.Sequence):
> AttributeError: module 'collections' has no attribute 'Sequence'
> *** Error code 1

should be referencing "collections.abc.Sequence". Presumably this
indicates that this version was targeting an older version of Python, as
"collections.Sequence" appears to have been removed in 3.7.

                         Gary Duzan