How do I use these environment variables? about pwasforfirefox

[filips123]

FFPWA_EXECUTABLES should point to the directory that contains firefoxpwa executable. So, for example, /usr/bin if the executable is /usr/bin/firefoxpwa.

but the wizard does not proceed to the Runtime Installation page but is stuck at the Connector Installation page with no obvious way to continue

This is unrelated to FFPWA_ environment variables. The problem is probably that Firefox doesn't detect the native connector.

To make the browser detect the native connector, you need to have a native messaging manifest at /usr/lib/mozilla/native-messaging-hosts/firefoxpwa.json and /usr/lib64/mozilla/native-messaging-hosts/firefoxpwa.json, and they need to point directly to the location of firefoxpwa-connector (like /usr/libexec/firefoxpwa-connector).

Which OS and distro do you use, how did you install PWAsForFirefox and how is the main Firefox installed? You shouldn't normally be required to set those environment variables and configure manifests manually...