After I finally figured out what I was doing wrong, it pretty much confirmed what you said, at least on my Clara.
rmkit-dev/rmkit
https://github.com/rmkit-dev/rmkit
$ wget
https://build.rmkit.dev/master/latest/kobo/KoboRoot.tgz
Install to .kobo/
After unmounting power cycling my Kobo reader, I swiped up the verry right OR left edge of my Clara HD, straddling the display and the bezel. I swiped from about 3/4 from top to 1/4 from top. Maybe tap and swipe if you have troubles.
The menu comes up with:
Nickel
animation_demo
dumbskull
input_demo
mines
rpncalc
wordlet
I played a couple of games of mines, but rpncalc and the other games weren't really my cup of tea.
Attempt to use package manager "nao":
Toltec Package Listing
https://toltec-dev.org/stable/
$ wget
https://toltec-dev.org/stable/rmall/....2-3_rmall.ipk
$ tar zxvf nao_0.1.2-3_rmall.ipk
$ tar zxvf data.tar.gz
Copied opt/bin/nao to /mnt/onboard/.adds/rmkit/bin/apps/ on my kobo.
Copied opt/etc/ folder to /mnt/onboard/.adds/rmkit/ on my kobo.
$ wget
https://build.rmkit.dev/master/latest/kobo/simple
Copied simple to /mnt/onboard/.adds/rmkit/bin/ on my kobo.
From SSH session to kobo:
# cd /mnt/onboard/.adds/rmkit/
# sh bin/apps/nao
bin/apps/nao: line 101: syntax error: unexpected "(" (expecting "}")
Deleted nao and simple on kobo.
Attempt to install packages manually:
Index of /master/latest/kobo/
https://build.rmkit.dev/master/latest/kobo/
$ wget
https://build.rmkit.dev/master/lates...release.tar.gz
$ tar zxvf release.tar.gz
apps/
apps/eclear
apps/drawing_demo
apps/mines
apps/rpncalc
apps/sharenote
apps/dumbskull
apps/sha256sum.txt
apps/animation_demo
apps/proc
apps/remux
apps/wordlet
apps/ls.txt
apps/harmony
apps/remux.service
apps/simple
apps/genie
apps/dithering_demo
apps/input_demo
apps/stb.arm.o
apps/lamp
apps/iago
apps/nao.sh
apps/rmkit.h
apps/bufshot
Copied apps/drawing_demo to /mnt/onboard/.adds/rmkit/bin/apps/ on my kobo.
Also copied harmony, lamp, nao.sh, and simple.
The only one of that bunch that appeared to do anything was harmony, which presented a nice menu of tools,etc at bottom.
But when I tried to use ...->new, it froze!
It's seems like it has a lot of potential if it gets more developed:
sas: simple app script
https://rmkit.dev/apps/sas
simple is a simple app script for remarkable that lets developers write apps without needing to compile code.
an example layout:
button 50 50 200 50 I'm a button
button 50 150 400 50 I'm a different button
label 50 100 300 50 I'm some text
image 50 200 200 200 /home/root/bomb-solid.png
...
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UPDATE - WORKS GREAT ON CLARA HD
https://www.mobileread.com/forums/sh...96&postcount=9
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