# SageMath Jupyter kernel not listed after installing Sage from source

I will list a bunch of potentially relevant info:

I am running Ubuntu 2204.2.33.0 on WSL

I had installed sage initially using the apt as

`sudo apt install sagemath`

I had managed to run Jupyter NB with three different kernels: Rstats (IR), python, sagemath

I decided to install SageMath from source, starting with removing the installed version with

`sudo apt-get --purge remove sagemath`

I have now SageMath version 10.0 installed. However its kernel does not appear as an option for Jupyter NB.

If I run the command

`jupyter kernelspec list`

I get back:

└─$jupyter kernelspec list Available kernels: ir

/home/toni/.local/share/jupyter/kernels/ir python3

/home/toni/.local/share/jupyter/kernels/python3

I have tried creating a directory inside `/home/toni/.local/share/jupyter/kernels`

called `sagemath`

and running `sudo jupyter kernelspec install ./SageMath/local/share/jupyter/kernels/sagemath`

, which doesn't seem to make sense how it would work, but it was a suggestion on a this answer, and I am probably applying it incorrectly. That gave me the error message: `Jupyter command jupyter-kernelspec not found.`

I have SageMath under a different directory: `/home/toni/sage`

, and I don't see Jupyter inside the subdirectory `/home/toni/sage/local/share`

**I THOUGHT I HAD SOLVED THIS, BUT NO...**

With the solution I posted, i.e.

I got it going by simply running:

```
sudo apt install sagemath-jupyter
```

Now:

```
└─$jupyter kernelspec list
Available kernels:
ir /home/toni/.local/share/jupyter/kernels/ir
python3 /home/toni/.local/share/jupyter/kernels/python3
sagemath /usr/share/jupyter/kernels/sagemath
```

I did get the kernel for Sage on Jupyter NB. However, I just realized that the kernel if for Sage 9.5, not Sage 10!