Kernel install failure. Cannot find default main class. [Linux]

I have been attempting to install almond on linux by following the instructions found at: https://almond.sh/docs/quick-start-install

(1) Running the command ./coursier launch --fork almond -- --install results in the error:

Cannot find default main class. Specify one with -M or --main-class.

(2) Running again as ./coursier launch --fork almond -M almond.ScalaKernel -- --install reports:

Installed scala kernel under /home/myuser/.local/share/jupyter/kernels/scala

After (2) I do see a scala kernel option in Jupyter, but clicking it results in a 500 Internal Server Error.

==> Kernel install failure.

[i10416]

update @kwalcock

Try ./coursier launch --fork almond:0.11.0 -- --install or ./coursier launch --fork almond:0.11.1 -- --install

I tried reproducing the situation in docker and it seems almond 0.11.2’s bug.

docker run -it ubuntu:18.04 /bin/bash
apt update && apt upgrade
apt install curl
// note: it also failed when using openjdk8-jdk-headless
apt install openjdk11-jdk-headless
curl -Lo coursier https://git.io/coursier-cli
chmod +x coursier
./coursier launch --fork almond  -v -v -- --install
...
Found main classes:
  almond.ScalaKernel (vendor: , title : )
  org.fusesource.jansi.AnsiMain(vendoer: org.fusesource.jansi, title: jansi)
  javassist.ctclass (vendor: , title: Javassist)
  com.sun.jna.Native (vendor: , title: Java Native Access (JNA))
...
Cannot find default main class. Specify one with -M or --main-class.

cs command also failed.

./coursier install cs
cs launch --fork almond  -v -v -- --install
Cannot find default main class. Specify one with -M or --main-class.

Both my local cs and cs inside Docker run successfully when installing almond:0.11.0, 0.11.1 and it shows following main classes.

Found main classes:
  almond.ScalaKernel (vendor: sh.almond, title: scala-kernel)
  org.fusesource.jansi.AnsiMain (vendor: org.fusesource.jansi, title: jansi)
  javassist.CtClass (vendor: , title: Javassist)
  com.sun.jna.Native (vendor: , title: Java Native Access (JNA))

Thit is probably because the latest almond version(0.11.2) is missing (vendor: sh.almond, title: scala-kernel).

[notmike-5]

@ItoYo16u I ran ./coursier launch --fork almond:0.11.1 -- --install --force given your suggestion. It installs a kernel in /home/user/.local/share/jupyter/kernels/scala that jupyter can see.

However, when I go into jupyter to start a new scala notebook I get 500: Internal Server Error and jupyter seems to suggest a permissions error?

[E <t> NotebookApp] Uncaught exception GET /notebooks/Untitled3.ipynb?kernel_name=scala (127.0.0.1)
    HTTPServerRequest(protocol='http', host='localhost:8888', method='GET', uri='/notebooks/Untitled3.ipynb?kernel_name=scala', version='HTTP/1.1', remote_ip='127.0.0.1')

{some stack trace}

PermissionError: [Errno 13] Permission denied: '/usr/local/share/jupyter/nbconvert/templates/conf.json'

{some stuff about the agent}

[E <t+1> NotebookApp] 500 GET /notebooks/Untitled3.ipynb?kernel_name=scala (127.0.0.1) 97.270000ms referer=http://localhost:8888/tree