TypeError: expected str, bytes or os.PathLike object, not NoneType when using window_name

[konomikitten]

Are you using the latest version of tmuxp? Check tmuxp -V against
https://pypi.org/project/tmuxp/. If it's not the latest, consider updating, e.g.
pip install --user tmuxp.

Step 1: Provide a summary of your problem

We should be able to create windows without specifying the name.

Step 2: Provide tmuxp details

$ tmuxp debug-info
-------------------------
environment:
	dist: Linux-6.9.7-amd64-x86_64-with-glibc2.38
	arch: x86_64
	uname: Linux; debian; 6.9.7-amd64
	version: #1 SMP PREEMPT_DYNAMIC Debian 6.9.7-1 (2024-06-27)
-------------------------
python version: 3.12.4 (main, Jun 12 2024, 19:06:53) [GCC 13.2.0]
system PATH: /home/debian/.cargo/bin:/home/debian/.npm-packages/bin:/home/debian/.local/share/gem/ruby/3.1.0/bin:/home/debian/.local/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games
tmux version: 3.4
libtmux version: 0.37.0
tmuxp version: 1.47.0
tmux path: /usr/bin/tmux
tmuxp path: /usr/lib/python3/dist-packages/tmuxp
shell: /bin/bash
-------------------------
tmux sessions:
	Default: 5 windows (created Sat Jun 29 15:15:18 2024) (attached)



tmux windows:
	1: irc (1 panes) [110x32] [layout b0bd,110x32,0,0,0] @0
	2: xmpp (1 panes) [110x32] [layout b0be,110x32,0,0,1] @1
	3: rss- (1 panes) [110x32] [layout b0bf,110x32,0,0,2] @2
	4: downloads (1 panes) [110x32] [layout b0c0,110x32,0,0,3] @3
	5: sudo* (1 panes) [110x32] [layout b0c1,110x32,0,0,4] @4 (active)



tmux panes:
	1: [110x32] [history 0/10000, 4430 bytes] %4 (active)



tmux global options:
	activity-action other
	assume-paste-time 1
	base-index 1
	bell-action any
	default-command ''
	default-shell /bin/bash
	default-size 80x24
	destroy-unattached off
	detach-on-destroy on
	display-panes-active-colour red
	display-panes-colour blue
	display-panes-time 1000
	display-time 750
	history-limit 10000
	key-table root
	lock-after-time 0
	lock-command "lock -np"
	message-command-style bg=black,fg=yellow
	message-line 0
	message-style bg=blue,fg=white
	mouse on
	prefix C-a
	prefix2 None
	renumber-windows on
	repeat-time 500
	set-titles off
	set-titles-string "#S:#I:#W - \"#T\" #{session_alerts}"
	silence-action other
	status on
	status-bg default
	status-fg default
	status-format[0] "#[align=left range=left #{E:status-left-style}]#[push-default]#{T;=/#{status-left-length}:status-left}#[pop-default]#[norange default]#[list=on align=#{status-justify}]#[list=left-marker]<#[list=right-marker]>#[list=on]#{W:#[range=window|#{window_index} #{E:window-status-style}#{?#{&&:#{window_last_flag},#{!=:#{E:window-status-last-style},default}}, #{E:window-status-last-style},}#{?#{&&:#{window_bell_flag},#{!=:#{E:window-status-bell-style},default}}, #{E:window-status-bell-style},#{?#{&&:#{||:#{window_activity_flag},#{window_silence_flag}},#{!=:#{E:window-status-activity-style},default}}, #{E:window-status-activity-style},}}]#[push-default]#{T:window-status-format}#[pop-default]#[norange default]#{?window_end_flag,,#{window-status-separator}},#[range=window|#{window_index} list=focus #{?#{!=:#{E:window-status-current-style},default},#{E:window-status-current-style},#{E:window-status-style}}#{?#{&&:#{window_last_flag},#{!=:#{E:window-status-last-style},default}}, #{E:window-status-last-style},}#{?#{&&:#{window_bell_flag},#{!=:#{E:window-status-bell-style},default}}, #{E:window-status-bell-style},#{?#{&&:#{||:#{window_activity_flag},#{window_silence_flag}},#{!=:#{E:window-status-activity-style},default}}, #{E:window-status-activity-style},}}]#[push-default]#{T:window-status-current-format}#[pop-default]#[norange list=on default]#{?window_end_flag,,#{window-status-separator}}}#[nolist align=right range=right #{E:status-right-style}]#[push-default]#{T;=/#{status-right-length}:status-right}#[pop-default]#[norange default]"
	status-format[1] "#[align=centre]#{P:#{?pane_active,#[reverse],}#{pane_index}[#{pane_width}x#{pane_height}]#[default] }"
	status-interval 15
	status-justify left
	status-keys vi
	status-left "#[fg=brightred][ #[fg=brightblue]#S #[fg=brightred]| "
	status-left-length 13
	status-left-style default
	status-position bottom
	status-right "#[fg=brightred]]"
	status-right-length 40
	status-right-style default
	status-style bg=default,fg=white
	update-environment[0] DISPLAY
	update-environment[1] KRB5CCNAME
	update-environment[2] SSH_ASKPASS
	update-environment[3] SSH_AUTH_SOCK
	update-environment[4] SSH_AGENT_PID
	update-environment[5] SSH_CONNECTION
	update-environment[6] WINDOWID
	update-environment[7] XAUTHORITY
	visual-activity off
	visual-bell off
	visual-silence off
	word-separators "!\"#$%&'()*+,-./:;<=>?@[\\]^`{|}~"



tmux window options:
	cursor-colour none
	cursor-style default
	menu-style default
	menu-selected-style bg=yellow,fg=black
	menu-border-style default
	menu-border-lines single
	aggressive-resize off
	allow-passthrough off
	allow-rename off
	alternate-screen on
	automatic-rename on
	automatic-rename-format "#{?pane_in_mode,[tmux],#{pane_current_command}}#{?pane_dead,[dead],}"
	clock-mode-colour blue
	clock-mode-style 24
	copy-mode-match-style bg=cyan,fg=black
	copy-mode-current-match-style bg=magenta,fg=black
	copy-mode-mark-style bg=red,fg=black
	fill-character ''
	main-pane-height 24
	main-pane-width 80
	mode-keys vi
	mode-style bg=yellow,fg=black
	monitor-activity off
	monitor-bell on
	monitor-silence 0
	other-pane-height 0
	other-pane-width 0
	pane-active-border-style "#{?pane_in_mode,fg=yellow,#{?synchronize-panes,fg=red,fg=green}}"
	pane-base-index 1
	pane-border-format "#{?pane_active,#[reverse],}#{pane_index}#[default] \"#{pane_title}\""
	pane-border-indicators colour
	pane-border-lines single
	pane-border-status off
	pane-border-style default
	pane-colours
	popup-style default
	popup-border-style default
	popup-border-lines single
	remain-on-exit off
	remain-on-exit-format "Pane is dead (#{?#{!=:#{pane_dead_status},},status #{pane_dead_status},}#{?#{!=:#{pane_dead_signal},},signal #{pane_dead_signal},}, #{t:pane_dead_time})"
	scroll-on-clear on
	synchronize-panes off
	window-active-style default
	window-size latest
	window-style default
	window-status-activity-style reverse
	window-status-bell-style reverse
	window-status-current-format " #I #W "
	window-status-current-style bg=magenta,fg=brightwhite
	window-status-format " #I #W "
	window-status-last-style default
	window-status-separator " "
	window-status-style default
	wrap-search on
	xterm-keys on

Step 3: Describe the problem:

Steps to reproduce:

1. tmux load test.yaml

Observed Results:

$ tmuxp load test.yml 
[Loading] /home/debian/test.yml
Traceback (most recent call last):
  File "/usr/bin/tmuxp", line 8, in <module>
    sys.exit(cli.cli())
             ^^^^^^^^^
  File "/usr/lib/python3/dist-packages/tmuxp/cli/__init__.py", line 146, in cli
    command_load(
  File "/usr/lib/python3/dist-packages/tmuxp/cli/load.py", line 576, in command_load
    load_workspace(
  File "/usr/lib/python3/dist-packages/tmuxp/cli/load.py", line 308, in load_workspace
    expanded_workspace = loader.expand(
                         ^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/tmuxp/workspace/loader.py", line 174, in expand
    expand(window, parent=workspace_dict)
  File "/usr/lib/python3/dist-packages/tmuxp/workspace/loader.py", line 109, in expand
    workspace_dict["window_name"] = expandshell(workspace_dict["window_name"])
                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/tmuxp/workspace/loader.py", line 26, in expandshell
    return os.path.expandvars(os.path.expanduser(value))  # NOQA: PTH111
                              ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<frozen posixpath>", line 259, in expanduser
TypeError: expected str, bytes or os.PathLike object, not NoneType

Expected Results:

Session started called test with a single unnamed window.

Relevant Code:

session_name: test
windows:
  - window_name:
    panes:
      -