chore: add mprocs as an alternative to bin/start

[andehen]

Problem

Separate dev processes. Make it easy to see logs separately and restart stuff separately.

mprocs is a nice tool for this. You can install it with brew install mprocs

With these changes, you can run ./bin/start-mprocs and get this

Changes

Add mprocs.yaml and a wrapper script to run mprocs with default env vars.
Just added stuff, nothing existing has been changed.

[github-actions]

Size Change: 0 B

Total Size: 1.11 MB

ℹ️ View Unchanged

Filename	Size
frontend/dist/toolbar.js	1.11 MB

_{compressed-size-action}

[danielbachhuber]

Fancy! Seems to work well:

In fact, a common use case for me is to stop the backend server from running so I can run it inside of Cursor with the debugger:

diff --git a/bin/start b/bin/start
index 171656ed0e..239f7ffd82 100755
--- a/bin/start
+++ b/bin/start
@@ -19,7 +19,7 @@ curl -s 'http://localhost:8123/ping' || ( service_warning 'ClickHouse'; bin/chec
 [ ! -f ./share/GeoLite2-City.mmdb ] && ( curl -L "https://mmdbcdn.posthog.net/" --http1.1 | brotli --decompress --output=./share/GeoLite2-City.mmdb )
 
 ./bin/start-worker &
-./bin/start-backend &
+# ./bin/start-backend &
 ./bin/start-frontend &
 ./bin/temporal-django-worker &
 

Looks like I can easily stop the process in mproc instead 😁

[danielbachhuber]

It'd be worth documenting this in https://posthog.com/handbook/engineering/developing-locally

[andehen]

It'd be worth documenting this in https://posthog.com/handbook/engineering/developing-locally

thanks for the reminder! i'll open a PR for that as well