Ah, interesting - I had taken a quick look at that and assumed that the matcher ~r"priv/static/.*(js|css|png|jpeg|jpg|gif|svg)$", would match priv/static/foo/bar/baz.png as the .* might have just considered the / as a standard character:

iex(4)> "/priv/static/assets/bar.js" =~ ~r"priv/static/.*(js|css)$"
true

Perhaps I'm misunderstanding things - I'm just guessing that the =~ operator (or equivalent) is used to match the patterns?

Still, I tried this - on my Windows dev machine - and it didn't affect things. .heex modifications trigger asset rebuild, .css modifications didn't. I then opened up my Mac, synced things up and found that thing happen to work perfectly there - both .css and .heex file mods trigger rebuilds without needing this change. Perhaps, for you, it was the installation of inotify-tools that fixed things?

I read that there might be some issues with tracking file changes on Windows when not running as an administrator - but it seems super weird that it should seemingly work with one type of file and not another. Perhaps there are issues having multiple watchers on Windows?

Further to this, I just launched Sonic Pi from a Windows terminal running in Administrator mode and modifying a .css file did indeed trigger a rebuild of the assets. It almost certainly has something to do with Windows lack of symlinks.

Hi Sam,

You're completely right, inotify-tools was actually all I needed, sorry for the confusion 🙈

I don't have access to a Windows machine so cannot check there, however digging through the deps list it seems https://github.com/falood/file_system is handling the cross-platform file watching and it mentions https://github.com/thekid/inotify-win as the inotify-tools port for Windows.

Hope that helps?

Shall I change this PR to just include the change to default secret_key_base? I'm also fine with closing this PR if it doesn't add anything :)

@Tuxified no worries at all. I really don't know what I'm doing and it's all guess work on my behalf from trying to read the source.

I do think that a PR with the default secret key base change makes a lot of sense though - thanks for noticing that.