Segmentation fault using nano

HPC Support HPC issues
1

Dear @Yann.Sagon,

I installed Aster using Conda this morning, and now I’m encountering an issue with nano.

(base) (yggdrasil)-[pouchon@login1 ~]$ nano  
Segmentation fault (core dumped)

I can’t use it anymore. Do you have any idea what might be causing this?

Thanks in advance,
Best regards,
Charles

2

Hello,

you can see that since you installed/used Conda, ano is provided by Conda:

(base) (yggdrasil)-[pouchon@login1 ~]$ which nano
~/miniforge3/bin/nano

Indeed, this appears in login1 logs:

[Fri May 30 08:29:18 2025] traps: nano[3312930] general protection fault ip:14f27ed59a3f sp:7fffd97387b8 error:0 in libncursesw.so.6.5[14f27ed45000+25000]
[Fri May 30 08:29:29 2025] traps: nano[3313050] general protection fault ip:15414c952a3f sp:7ffdaee4d928 error:0 in libncursesw.so.6.5[15414c93e000+25000]

But anyway, I’m able to launch this version of nano on login1.yggdrasil as user pouchon without issue, so I don’t understand what is different in your case. Did you logged out and login again?

If you want to disable conda, you can edit your .bashrc file and remove all the stuff that conda wrote to it.

# >>> conda initialize >>>
# !! Contents within this block are managed by 'conda init' !!
__conda_setup="$('/home/users/p/pouchon/miniforge3/bin/conda' 'shell.bash' 'hook' 2> /dev/null)"
if [ $? -eq 0 ]; then
    eval "$__conda_setup"
else
    if [ -f "/home/users/p/pouchon/miniforge3/etc/profile.d/conda.sh" ]; then
        . "/home/users/p/pouchon/miniforge3/etc/profile.d/conda.sh"
    else
        export PATH="/home/users/p/pouchon/miniforge3/bin:$PATH"
    fi
fi
unset __conda_setup

if [ -f "/home/users/p/pouchon/miniforge3/etc/profile.d/mamba.sh" ]; then
    . "/home/users/p/pouchon/miniforge3/etc/profile.d/mamba.sh"
fi
# <<< conda initialize <<<
3

Hi,

Thanks a lot for your reply.

I installed nano with Conda just after my previous message, and it’s now working correctly, as you mentioned:

(base) (yggdrasil)-[pouchon@login1 ~]$ which nano  
~/miniforge3/bin/nano

Previously, I was getting the error with the nano installed here:

(base) (yggdrasil)-[pouchon@login1 ~]$ which nano  
/usr/bin/nano

So, I guess I can safely use the new nano now.

Thanks again,
Charles

4

Ok I see. nano needs libncursesw.so.6 which is provided by conda in your case and isn’t probably compatible with legacy nano from the OS due to version change.