Problem with nodejs helper

[tofbouf]

Describe the bug

The nodejs helper may install the wrong version of node.

Context

• Hardware: Raspberry Pi4 at home
• YunoHost version: 11.2.10.3
• I have access to my server: Through SSH | through the webadmin
• Are you in a special context or did you perform some particular tweaking on your YunoHost instance?: maybe...
  • See below:

To reproduce

Installing Node-Red on RPi4, with 32bit kernel ?
The installation goes to end, but nodered doest not start:

Mar 17 01:13:25 natasha systemd[1]: Started Node-RED server.
Mar 17 01:13:25 natasha systemd[9343]: nodered.service: Failed to execute /opt/node_n/n/versions/node/20/bin/node: No such file or directory
Mar 17 01:13:25 natasha systemd[9343]: nodered.service: Failed at step EXEC spawning /opt/node_n/n/versions/node/20/bin/node: No such file or directory
Mar 17 01:13:25 natasha systemd[1]: nodered.service: Main process exited, code=exited, status=203/EXEC
Mar 17 01:13:25 natasha systemd[1]: nodered.service: Failed with result 'exit-code'.

The installed node is the arm64 one, which is coherent with uname -m returned value: aarch64
But, on my system, I've got:
dpkg --print-architecture
armhf
The arm64 node is linked to a libc that is not installed on my system.

To correctly install node, I modified helpers/nodejs, function ynh_install_node() (from line 127):
# Install the requested version of nodejs
uname=$(dpkg --print-architecture)
if [[ $uname =~ aarch64 || $uname =~ arm64 ]]; then
n $nodejs_version --arch arm64
elif [[ $uname =~ armhf ]]; then
n $nodejs_version --arch armv7l
else
n $nodejs_version
fi

Note also that the --arch option was not handled correctly.
It is --arch arm64, instead of --arch=arm64

Now, nodered is installed correctly and run as before the upgrade.