Doesn't seem to work in Waterfox

[InconsolableCellist]

I installed the addon from https://addons.mozilla.org/en-US/firefox/addon/textern/ and then did the native install for my user from https://github.com/jlebon/textern

System:

$ cat /etc/os-release 
PRETTY_NAME="Devuan GNU/Linux 4 (chimaera)"
NAME="Devuan GNU/Linux"
VERSION_ID="4"
VERSION="4 (chimaera)"
VERSION_CODENAME="chimaera"
ID=devuan
ID_LIKE=debian
HOME_URL="https://www.devuan.org/"
SUPPORT_URL="https://devuan.org/os/community"
BUG_REPORT_URL="https://bugs.devuan.org/"

$ waterfox --version
Waterfox Limited Waterfox G4.0.6

$ ls ~/.local/libexec/textern/
inotify_simple  textern.py

I also put textern.py in the PATH and copied $USER/.mozilla/native-messaging-hosts to $USER/.waterfox/ without luck.

Hitting CTRL+SHIFT+D on a textarea doesn't have a visible effect, and hitting it a second time results in a message saying textern is already running.

[jlebon]

I'm not familiar with Waterfox. I'm not sure what the delta is with Firefox and whether the same WebExtensions APIs are supported. Can you try some of the steps in the troubleshooting section? If there are some non-invasive tweaks needed to make it work, I'd be fine adding support for it (with the understanding that things may break since it's less tested).