Error reading clipboard under wayland

[SamiSieranoja]

Trying the Wayland on Ubuntu 22.04, with GTK 4.12.5 (motivated by [1]). Again, not sure if the bug is in my code or rubu-gnome, but I'm getting an error when trying to read clipboard data from any external program (if clipboard updated from same program, it works).

[1] https://gitlab.gnome.org/GNOME/gtk/-/issues/6493

https://github.com/SamiSieranoja/vimamsa/blob/41a5b24bdd2528eb73dbabfcaf65cb6f9d09f24f/lib/vimamsa/buffer_changetext.rb#L78

    clipboard = vma.gui.window.display.clipboard
    pp clipboard
    clipboard.read_text_async do |_clipboard, result|
      begin
        text = clipboard.read_text_finish(result)
      rescue Gio::IOError::NotSupported
        debug Gio::IOError::NotSupported
      else
        paste_finish(text, at, register)
      end
    end

Getting the following error:

#<GdkWaylandClipboard:0x00007f86d35e6f58 ptr=0x000055b586c25ae0>
GLib-CRITICAL **: g_unix_open_pipe: assertion '(flags & (FD_CLOEXEC)) == flags' failed
	from /home/sjs/.rbenv/versions/3.1.2/lib/ruby/gems/3.1.0/gems/gobject-introspection-4.2.1/lib/gobject-introspection/loader.rb:713:in `invoke'
	from /home/sjs/.rbenv/versions/3.1.2/lib/ruby/gems/3.1.0/gems/gobject-introspection-4.2.1/lib/gobject-introspection/loader.rb:581:in `read_text_async'
	from /home/sjs/Drive/code/vimamsa/git/lib/vimamsa/buffer_changetext.rb:104:in `paste_start'
	from /home/sjs/Drive/code/vimamsa/git/lib/vimamsa/buffer_changetext.rb:156:in `paste'
	from /home/sjs/Drive/code/vimamsa/git/lib/vimamsa/key_bindings_vimlike.rb:126:in `block in <top (required)>'
	from /home/sjs/Drive/code/vimamsa/git/lib/vimamsa/actions.rb:58:in `call'
	from /home/sjs/Drive/code/vimamsa/git/lib/vimamsa/actions.rb:33:in `call_action'
	from /home/sjs/Drive/code/vimamsa/git/lib/vimamsa/key_binding_tree.rb:627:in `exec_action'
	from /home/sjs/Drive/code/vimamsa/git/lib/vimamsa/key_binding_tree.rb:580:in `block in handle_key_bindigs_action'
	from /home/sjs/Drive/code/vimamsa/git/lib/vimamsa/key_binding_tree.rb:579:in `times'
	from /home/sjs/Drive/code/vimamsa/git/lib/vimamsa/key_binding_tree.rb:579:in `handle_key_bindigs_action'
	from /home/sjs/Drive/code/vimamsa/git/lib/vimamsa/key_binding_tree.rb:444:in `match_key_conf'
	from /home/sjs/Drive/code/vimamsa/git/lib/vimamsa/gui_sourceview.rb:405:in `handle_key_event'
	from /home/sjs/Drive/code/vimamsa/git/lib/vimamsa/gui.rb:519:in `block in reset_controllers'
	from /home/sjs/.rbenv/versions/3.1.2/lib/ruby/gems/3.1.0/gems/gobject-introspection-4.2.1/lib/gobject-introspection/loader.rb:713:in `invoke'
	from /home/sjs/.rbenv/versions/3.1.2/lib/ruby/gems/3.1.0/gems/gobject-introspection-4.2.1/lib/gobject-introspection/loader.rb:713:in `invoke'
	from /home/sjs/.rbenv/versions/3.1.2/lib/ruby/gems/3.1.0/gems/gobject-introspection-4.2.1/lib/gobject-introspection/loader.rb:581:in `run'
	from /home/sjs/Drive/code/vimamsa/git/lib/vimamsa/gui.rb:733:in `init_window'
	from /home/sjs/Drive/code/vimamsa/git/lib/vimamsa/gui.rb:210:in `run'
	from exe/vimamsa:39:in `<main>'

Otherwise clipboard is working ok under Wayland and as a workaround I used the following hack:

    Thread.new {
      text = `xclip -selection c -o`
      paste_finish(text, at, register)
    }

[kou]

https://gitlab.gnome.org/GNOME/gtk/-/commit/6961c1fe4aea522b427740a918633e02e871419f may be related.

[kou]

It seems that you need GLib 2.78 or later.

[SamiSieranoja]

ok. that seems to work. Thanks!