Automatically downloaded kitty binary on remote

[ser3n1ty87]

Describe the bug There seems to be an issue with the download of kitty on a remote when using the ssh kitten.

Connecting to a remote using kitty +kitten ssh <my-remote> everything works fine, except that there seems to be an issue with the automagically downloaded kitty binary. It gets downloaded to "~/.local/share/kitty-ssh-kitten/kitty/bin/kitty", however, it is not made executable such that a subsequent call of kitty or any of its kittens (I wanted to try the icat kitten on a remote) on the remote doesn't work and leads to a "Permission denied" error. Is this the actual problem or is there any other issue on my side? I am using the current kitty 0.25.0 installed via my system package manager (openSUSE Tumbleweed). Thank you!

To Reproduce Steps to reproduce the behavior:

1. kitty +kitten ssh
2. kitty +kitten icat
3. See error: "Permission denied"

[kovidgoyal]

This will probably be caused by the umask on your remote system being set to prevent creation of executable files. If you delete the installed kitty and run

umask 022; kitty

it should now be created with correct permissions. I should update the bootstrap script to set and restore umask before untarring.

[GabeDuarteM]

@kovidgoyal I'm having a similar problem, but in my case umask didn't fix it...

• run kitty +kitten ssh w (w being the hostname)
• run echo hooray | kitty +kitten clipboard

it outputs zsh: permission denied: kitty

If I then do, on the SSH'ed machine:

• rm -rf /home/gabriel/.local/share/kitty-ssh-kitten/kitty/bin/kitty
• umask 022; kitty

I get zsh: command not found: kitty

If I then exit SSH, relaunch kitty +kitten ssh w, and then run echo hooray | kitty +kitten clipboard, I again get zsh: permission denied: kitty

if I then run chmod +x /home/gabriel/.local/share/kitty-ssh-kitten/kitty/bin/kitty to make it executable, and run echo hooray | kitty +kitten clipboard, I get the following output:

/home/gabriel/.local/share/kitty-ssh-kitten/kitty/bin/kitty: 27: [: 0: unexpected operator
/home/gabriel/.local/share/kitty-ssh-kitten/kitty/install/bin/kitty: error while loading shared libraries: libpython3.9.so.1.0: cannot open shared object file: No such file or directory

Kitty was installed using the script curl -L https://sw.kovidgoyal.net/kitty/installer.sh | sh /dev/stdin Host machine is running MacOS 12.2.1 (21D62) SSH machine is running Ubuntu 20.04.4 LTS (Focal Fossa)

Any idea whats the problem?

[kovidgoyal]

Look at the commit closing this issue.

[GabeDuarteM]

@kovidgoyal Ok, I have a different error now... What I did:

• ssh into the server
• I deleted the whole ~/.local/share/kitty-ssh-kitten folder
• Exited the ssh
• Entered it again, so that the whole kitty-ssh-kitten folder is recreated fresh
• Edited ~/.local/share/kitty-ssh-kitten/kitty/bin/kitty to apply the changes on the commit you mentioned
• ran echo hooray | kitty +kitten clipboard >> Still got the permission denied: kitty error
• ran chmod +x ~/.local/share/kitty-ssh-kitten/kitty/bin/kitty to give it permission
• ran echo hooray | kitty +kitten clipboard and got the following:

/home/gabriel/.local/share/kitty-ssh-kitten/kitty/bin/kitty: 27: [: 0: unexpected operator
kitty needs to be installed

Downloading kitty from: https://github.com/kovidgoyal/kitty/releases/download/v0.25.0/kitty-0.25.0-x86_64.txz

  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
100 13.6M  100 13.6M    0     0  7619k      0  0:00:01  0:00:01 --:--:-- 9530k
Traceback (most recent call last):
  File "runpy.py", line 197, in _run_module_as_main
  File "runpy.py", line 87, in _run_code
  File "kitty_main.py", line 185, in <module>
  File "kitty_main.py", line 176, in main
  File "kitty_main.py", line 129, in namespaced
  File "kitty_main.py", line 111, in run_kitten
  File "bypy-importer.py", line 279, in exec_module
  File "kittens/runner.py", line 14, in <module>
  File "bypy-importer.py", line 279, in exec_module
  File "kitty/utils.py", line 25, in <module>
  File "bypy-importer.py", line 127, in create_module
ImportError: libfontconfig.so.1: cannot open shared object file: No such file or directory

Any idea whats going on?

I tried using both zsh and bash, both with the same results...

Also, not sure if its related, but there is an error at the start of the script: /home/gabriel/.local/share/kitty-ssh-kitten/kitty/bin/kitty: 27: [: 0: unexpected operator and one at the end ImportError: libfontconfig.so.1: cannot open shared object file: No such file or directory, which seems to be a python error... I have Python 3.8.10, if that's relevant

[kovidgoyal]

You are missing fontconfig on the server. Currently kitty does not load it dynamically so it needs to be installed. Someday I may change that.

[GabeDuarteM]

@kovidgoyal Awesome, that actually worked after doing sudo apt-get install fontconfig on the shh server, thanks!

The only thing is that whenever I exit and enter shh again, I have to chmod the script, is that intended? I could automate it by putting it on my rc file, but seems like a hack to have to do that in the first place...

Also, whenever I use it, I do get that /home/gabriel/.local/share/kitty-ssh-kitten/kitty/bin/kitty: 27: [: 0: unexpected operator error... Any idea what that is? Doesn't seem to affect the functionality, but seems to be related to this line, https://github.com/kovidgoyal/kitty/commit/289028b46870347e2b614511bbb2f830c32f9573#diff-3468e507dd46d3bf94c6c31e9bba42815cf13ca3f1202d501fe95b235f900dc2R27

I'm also having some problems while using this inside nvim... My whole intention on this is to share the local OS clipboard with an nvim instance running on the remote server (both for copy and paste) and finally get to ditch tmux, as Kitty pretty much does everything i'd use tmux to... I managed to make copy work with OSC52, I thought I could also use it for pasting, but I couldn't find much resources on how to do it, then I found this clipboard kitten, but running it through vim gives a different OSError: [Errno 6] No such device or address: '/dev/tty' error, which I'm also not sure what that is. The full error:

/home/gabriel/.local/share/kitty-ssh-kitten/kitty/bin/kitty: 27: [: 0: unexpected operator                                                             
Traceback (most recent call last):                                                                                                                     
  File "runpy.py", line 197, in _run_module_as_main                                                                                                    
  File "runpy.py", line 87, in _run_code                                                                                                               
  File "kitty_main.py", line 185, in <module>                                                                                                          
  File "kitty_main.py", line 176, in main                                                                                                              
  File "kitty_main.py", line 129, in namespaced                                                                                                        
  File "kitty_main.py", line 112, in run_kitten                                                                                                        
  File "kittens/runner.py", line 112, in run_kitten                                                                                                    
  File "runpy.py", line 213, in run_module                                                                                                             
  File "runpy.py", line 87, in _run_code                                                                                                               
  File "kittens/clipboard/main.py", line 107, in <module>                                                                                              
  File "kittens/clipboard/main.py", line 96, in main                                                                                                   
OSError: [Errno 6] No such device or address: '/dev/tty'                                                                                               

Press ENTER or type command to continue

File "kittens/clipboard/main.py", line 96 currently is https://github.com/kovidgoyal/kitty/blob/master/kittens/clipboard/main.py#L96, but I don't understand much of what that should do...

Also, if you have any tips on getting that to work in an easier way, I know that this doesn't relate specifically to kitty, but I'd really appreciate it... And sorry for the many questions 😅 (I could also post this as a separate issue if preferred)

[kovidgoyal]

neovim should be able to use osc 52 natively. Ask in its community for help. And again, read the commit that closed this issue for the rest of your questions.

[GabeDuarteM]

@kovidgoyal to be honest, I'm not sure where to look for the answers at on that commit:

• the /home/gabriel/.local/share/kitty-ssh-kitten/kitty/bin/kitty: 27: [: 0: unexpected operator comes from [ $? == 0 ] || script_path="$0", which indeed does not run on my terminal even when I manually enter that, both on zsh and bash (seems to be a syntax error? but I'm not an expert on bash, so I'm not sure)... I can comment that line, but when I exit the ssh session and open it again, its there again (and I feel like I shouldn't just edit it like that, as on next releases it could get replaced anyway)
• for the chmod thing, I could again add it to the script, but it suffers from the same problem as the alternative above (the file resets when I exit and enter ssh again). Another solution would be to put it in my shell config, but that just seems like a hack to solve the problem, I guess that should be done by the kitty script directly when it installs it, no?
• and about neovim, it does not support natively OSC52 (at least, according to this issue, which is currently with the tag unplanned). What it supports is configuring an external clipboard provider though, which is what I'm trying to configure. I got it to work with copy as I said before, but I'm not sure how to use it directly for pasting, I'm not familiar at all with terminal codes, so that's why I was trying to go for the clipboard kitten. With that though, the error OSError: [Errno 6] No such device or address: '/dev/tty' is blocking me from reading it through kitty +kitten clipboard --get-clipboard when I run system('kitty +kitten clipboard --get-clipboard') on neovim, so I'm not sure if I can do something to allow it on my end, as it seems this is coming from inside the clipboard kitten (incompatibility with neovim maybe?)

[kovidgoyal]

The first two are fixed by the commit. The last is a neovim bug you will need to wait for it to be fixed, you cant use the clipbaord kitten from a program that doesnt make the tty device available.

[GabeDuarteM]

I see... I'll try checking the neovim thing with them then...

About the first two issues, sorry about the back and forth, not sure if I'm missing something, there's only one file on that commit, so I replaced ~/.local/share/kitty-ssh-kitten/kitty/bin/kitty with the file on the commit, and I still get the error... Am I supposed to do something different?

For the first issue, on that commit, the problematic line is still there (line 27, [ $? == 0 ] || script_path="$0"),

And for the second issue, the permission denied error that I get is for the file you committed, and not for whatever comes out of fetch "$url" | command tar -C "$install_dir" -xJof -, so I cannot run it unless I explicitly give it permissions with chmod, so it doesn't seem to fix the problem, at least in my part...

[kovidgoyal]

Dont replace files, use the nightly kitty build. Both your issues will be resolved.