[FEAT] Firefox ESR support

[joonaskokko]

Is your feature request related to a problem? If so, please describe.

The theme doesn't install for Firefox ESR. After doing a search and replace to the project I managed to change all ""default-release to ""default-esr but for some reason the theme doesn't get enabled. I'm stuck as I couldn't figure out why.

Describe the solution you'd like

The script could also detect an ESR installation.

Priority

Low (Nice-to-have)

Is this something you would be keen to implement

Maybe

[AdamXweb]

Thanks for submitting this issue - I'll look into ESR support. Could you confirm which OS and version of firefox you are on?

[joonaskokko]

I'm on Sequoia 15.2 and Firefox ESR version is 128.5.2esr (64-bit).

I could do a pull request of the installation scripts but my competence ends to the point where the theme doesn't get enabled for some reason. Got it install successfully but the browser theme doesn't change. I also set the toolkit.legacyUserProfileCustomizations.stylesheets.

[AdamXweb]

I'll have to look further into it further, as you're correct - the folder for the profile is default-esr not default-release. I'm not sure if firefox ESR respects the configuration/user.js file too.. which could cause some issues. I'll research and come back to this.

I was able to get the theme 'working' when changing the legacy stlesheets to true in `about:config` too. However due to the changes introduced in firefox v133, only up to v1.5.6 is compatible..

There may be a bit more to be done to the install script to make it more streamlined for users on both MacOS and Windows.. As well as for forks of Firefox

Silly question but did you quit and reopen firefox after changing stylesheets to true?

[joonaskokko]

Yes, I did. Couple of times actually.

But yeah, if ESR needs its own version of the theme then I think it's not really viable to support it. Managing multiple versions seems a bit too much. One possibility is just to wait for ESR to update to a more recent version and then could look into this again with the script changes if it would work out-of-the-box.

Thanks for looking into this tho!