Ignores `watch_file` and `watch_dir` from direnv

[yajo]

Describe the bug

Lorri doesn't find the correct files to watch, and I have no way to force it to reload.

To Reproduce
Steps to reproduce the behavior:

I have a Devshell+Blueprint-based flake where the devshell depends on various files, as per their standard.

Lorri seems to fail to find what files to watch.

I added some of them to the .envrc, which now looks like this:

dotenv_if_exists .data/credentials.env
watch_dir devshells modules/devshell

if type -P lorri &>/dev/null; then
    eval "$(lorri direnv --flake ${DIRENV_USE_FLAKE_ARGS:-.})"
else
    echo 'while direnv evaluated .envrc, could not find the command "lorri" [https://github.com/nix-community/lorri]'
    use flake ${DIRENV_USE_FLAKE_ARGS:-.} --impure --accept-flake-config
fi

Expected behavior

Lorri should respect the watch_dir and watch_file directives expressed in .envrc.

In any case, Lorri should provide a command to force reloading the devshell. Something like lorri reload. Or, even better, force reloading when I execute direnv reload.

Metadata

$ lorri info
Project Shell File: /home/yajo/prodevel/example/flake.nix
Project Garbage Collector Root: /home/yajo/.cache/lorri/gc_roots/671ed3f4d2327747ed356a8f73dd0ad0/gc_root/shell_gc_root

General:
Lorri User GC Root Dir: /home/yajo/.cache/lorri/gc_roots
Lorri Daemon Socket: /run/user/1000/lorri/daemon.socket
Lorri Daemon Status: `lorri daemon` is running

$ uname -a
Linux iceland 6.15.6-zen1 #1-NixOS ZEN SMP PREEMPT_DYNAMIC Tue Jan  1 00:00:00 UTC 1980 x86_64 GNU/Linux

Additional context

@moduon MT-10900

[nyarly]

It shouldn't be necessary in general (but I understand how you've run into it) but you can run lorri internal ping --flake flake.nix to force a rebuild.

Can you share you project with us? That might be the easiest way to debug this. Lorri maintains its own watchlist of changed files, and it may be that devshell or blueprint is thwarting its ability to do so.

[nyarly]

Just to amplify a crucial detail here: Lorri parses the log of the Nix build to see what files to watch. It continues to watch those files in the background and does builds if they change. The environment variables that result from those build get transmitted to direnv via a file, and Lorri has direnv watch that, so ultimately, you should not need to use watch_file or watch_dir for files that Lorri is managing.

Lorri should be triggering a direnv reload when those files change, however, and I suspect that what's happening is that devshell interferes with our ability to track what gets loaded for build.

[yajo]

Is there some way to know what files is lorri watching? This issue is a bit intermittent and this could help me give you more insight into the problem when it happens to me again.

Can you share you project with us?

Depends on where I see the problem next time. 😅