New comment by tornaria on void-packages repository

https://github.com/void-linux/void-packages/pull/50280#issuecomment-2119299995

Comment:
I'm not sure about a reasonable alternative. The closest one is:
- set `PermitUserEnvironment BASH_ENV` in `sshd_config` (needs root)
- set `BASH_ENV=~/.bashrc` in `~/.ssh/environment`
However, this will end up running `~/.bashrc` also in subshells, which is not what we want.

The original feature, when `SSH_SOURCE_BASHRC` is set, will source `~/.bashrc` only when `SHLVL=1`, so in principle it will only get run once per ssh.