feat: add redis process

[wilfredallyn]

Part of #36: add redis process to devenv.nix

Run these commands to verify redis working. redis process should appear.

devenv shell
devenv up

You can also open another terminal and run devenv shell. It will show a list of running processes. Then you can run redis-cli commands

• redis-cli ping
• redis-cli info server
• redis-cli set test "hello world" && redis-cli get test

[vnprc]

Looks good except I am not seeing the log file. Troubleshooting it now.

[vnprc]

Can you update withLogging so that all processes log to console and to a log file?

My LLM suggests this change. I haven't tested it so it's probably broken but this should get you started.

✅ Updated withLogging that works with forking processes:

withLogging = command: logFile:
  ''
    mkdir -p ${config.devenv.root}/logs
    ${command} 2>&1 | stdbuf -oL tee -a ${config.devenv.root}/logs/${logFile}
  '';

Key changes:

No bash -c

Runs the command directly, piping into tee

stdbuf is now only on tee, where it’s effective even after fork

[vnprc]

Apparently redis forks on startup and this doesn't play nicely with the bash -c command in the withLogging function.

[wilfredallyn]

I revised withLogging and also the redis process command. The logging is now working. Thanks for the help

[vnprc]

Excellent!