Terminology fails to start on Wayland: Xlib: extension "DPMS" missing on display ":0"

[Galagora]

Describe the bug
Setting the ELM_WAYLAND variable to wl, as suggested here, does nothing. Unsetting DISPLAY results in this error:

$ terminology
ERR<10921>:ecore_evas ../src/modules/ecore_evas/engines/drm/ecore_evas_drm.c:150 _ecore_evas_drm_init() Failed to init Ecore_Drm2 library
ERR<10921>:ecore_evas ../src/modules/ecore_evas/engines/drm/ecore_evas_drm.c:150 _ecore_evas_drm_init() Failed to init Ecore_Drm2 library
ERR<10921>:elementary ../src/lib/elementary/efl_ui_win.c:5561 _elm_win_finalize_internal() Cannot create window.
ERR<10921>:eo ../src/lib/eo/eo.c:1137 _efl_add_internal_end() Object of class 'Efl.Ui.Win_Legacy' - Not all of the object constructors have been executed.
ERR<10921>:ecore ../src/lib/ecore/ecore.c:792 _ecore_magic_fail() *** ECORE ERROR: Ecore Magic Check Failed!!! in: ecore_evas_callback_selection_changed_set()
ERR<10921>:ecore ../src/lib/ecore/ecore.c:794 _ecore_magic_fail()     Input handle pointer is NULL!
ERR<10921>:ecore ../src/lib/ecore/ecore.c:792 _ecore_magic_fail() *** ECORE ERROR: Ecore Magic Check Failed!!! in: ecore_evas_callback_drop_drop_set()
ERR<10921>:ecore ../src/lib/ecore/ecore.c:794 _ecore_magic_fail()     Input handle pointer is NULL!
ERR<10921>:ecore ../src/lib/ecore/ecore.c:792 _ecore_magic_fail() *** ECORE ERROR: Ecore Magic Check Failed!!! in: ecore_evas_callback_drop_motion_set()
ERR<10921>:ecore ../src/lib/ecore/ecore.c:794 _ecore_magic_fail()     Input handle pointer is NULL!
ERR<10921>:ecore ../src/lib/ecore/ecore.c:792 _ecore_magic_fail() *** ECORE ERROR: Ecore Magic Check Failed!!! in: ecore_evas_callback_drop_state_changed_set()
ERR<10921>:ecore ../src/lib/ecore/ecore.c:794 _ecore_magic_fail()     Input handle pointer is NULL!
ERR<10921>:evas_main ../src/lib/evas/canvas/evas_object_smart.c:746 _efl_canvas_group_efl_object_destructor() efl_canvas_group_del() was not called on this object: 0x4000000076d2 (Efl.Ui.Win_Legacy)
ERR<10921>:elementary ../src/lib/elementary/efl_ui_win.c:6190 elm_win_autodel_set() No widget data for object (nil) ((null))
CRI<10921>:terminology ../src/bin/main.c:581 _start() Could not create window.

Expected behavior
There are two issues. First, the Enlightenment Foundation Libraries are not complied with Wayland support. Secondly, the ELM_WAYLAND variable needs to be set correctly a Wayland environment.

Notify maintainers

@matejc @tstrobel @ftrvxmtrx @romildo

Maintainer information:

# a list of nixpkgs attributes affected by the problem
attribute: enlightenment.terminology # + any other Enlightenment package
# a list of nixos modules affected by the problem
module:

[romildo]

PR #99556 fixes this issue.

Tested terminology with sway. The DISPLAY environment variable should not be set. In my test it was not needed to set ELM_WAYLAND.