call-logger - A logger that calls another application, script or URL for every logged item, passing a formatted string that contains the details of the log event

snapcraft - This is Rust library giving access to the snapcraft standard environment variables for when you need to alter your behaviour when your application is running inside a snap, e.g. you need to find the user's home folder to access some shared settings, or you need to work out where the data folder of the snap is so that you can write to it

pshell - pshell answers the question "Is my application running in a shell, and if so, which one?" ...

Example: you are installing something and want to make changes to the shell and you want to know what changes are required to which shell script