Using a login shell only for the :term command

Question

I'm on MacOS, so basically all terminals are login terminals for me which source my bash_profile and load everything I need.

However, the :term command does not source my bash_profile, I believe because its not a login terminal.

I know I can use set shell=bash\ -l to do this, but that also causes Vim to source my bash_profile on load, which is slow.

Is there a way to only do this when actually running the term command in Vim?

Update Solved!

Ralf's idea worked perfectly. I also integrated in d-ben-knoble's interactive check as well.

if [[ -n "$PS1" && -f "$HOME/.bashrc" ]]; then
    source "$HOME/.bashrc"
fi

Answer 1

I would solve this in bash:

1) Move all setting that you need in login shells and non-login shells to the file .bashrc

2) Add the following to the end of your .bash_profile:

# include .bashrc if it exists
if [ -f "$HOME/.bashrc" ]; then
    . "$HOME/.bashrc"
fi

You could drop the if..., as the file always exists.

Background: The file .bashrc is source by bash if it is started as an interactive shell that is not a login shell. See man bash section "INVOCATION".

---

You .bash_profile will be rather empty, but that is ok. On Linux I use the file .profile (sourced by bash if .bash_profile is not available) and it only contains a few export statements and the source command for .bashrc.