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# Libpeas 1.99.0
This is the beginning of the libpeas 2.0 series. It breaks ABI with previous
versions of libpeas and therefore can be installed along-side libpeas-1.0.
This allows libpeas to improve API ergonomics as well as implement features
which will improve integration with GTK 4.
## Removals
### Removal of libpeas-gtk
libpeas-gtk is not part of libpeas-2.
Application developers are encouraged to use GTK 4's integration with
GtkListView and similar widgets with PeasEngine. It provides a GListModel
implementation with PeasPluginInfo to bind into row widgets.
### Reoval of PeasActivatable
Interfaces are cheap and easy to create in GObject these days. Application
developers are encouraged to create their own interfaces or base-objects
which can implemented by their plugins.
### Removal of Python 2 support
Everything of consequence is on Python 3 now. There is no need for us to
maintain the Python 2 loader for new applications targeting libpeas-2.
### Deprecated API
Previously deprecated API has been removed from libpeas such as the very
old GObject Introspection integration using "call" on extension objects.
## List Models
### PeasEngine
The PeasEngine object now implements a GListModel of PeasPluginInfo. Now
that PeasPluginInfo is a GObject, you may bind it's properties to labels
within rows of a GtkListView with relative ease.
Additionally, you can easily filter lists based on type-to-search with
GtkFilterListModel, more than you could ever do with libpeas-gtk.
### PeasExtensionSet
PeasExtensionSet is also a GListModel which improves situations where an
application wants to limit which extensions within a set are active based
on arbitrary conditions.
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