If you have reload_style_on_change enabled, and use dynamic appearance
styling (style-dark.css and style-light.css), then changing the
appearance doesn't update the files that are being watched for reload.
Add a method to CssReloadHelper to change the CSS file being watched,
and also provide the CSS file as a parameter to the callback so setupCss
can be called on the right file when the file watcher triggers.
"reload_style_on_change" would check if the target file is a symlink,
but only resolves the first link. If the symlink is acutally a chain of
symlink, such as what happens with NixOS's mkOutOfStoreSymlink, we will
not find the actual file style file.
Update the symlink resolution logic to walk down the symlink chain until
it finds a non-symlink. Also check against a the original filename
(which may be a symlink) to guard against infinitely looping on a
circular symlink chain.
Alexis Rouillard