Bash not sourcing .profile automatically in Debian 11

So, in order to avoid typing "flatpak run", every time I need to run a flatpak program from the terminal, to have gui programs installed using nix appear in my applications menu(rofi, in this case), and to avoid typing the entire path to my .local/bin, I had added the following lines to my .profile:

set PATH so it includes user's private bin if it exists

if [ -d "$HOME/bin" ] ; then export PATH="$HOME/bin:$PATH" fi

set PATH so it includes user's private bin if it exists

if [ -d "$HOME/.local/bin" ] ; then export PATH="$HOME/.local/bin:$PATH" fi

for desktop entries for packages installed using Nix

export XDG_DATA_DIRS="/home/guest/.nix-profile/share:$XDG_DATA_DIRS"

set PATH so it includes user's private bin if it exists

if [ -d "/var/lib/flatpak/exports/bin" ] ; then export PATH="/var/lib/flatpak/exports/bin:$PATH" fi

if [ -d "/.local/share/flatpak/exports/bin" ] ; then export PATH="/.local/share/flatpak/exports/bin:$PATH" fi

However, for some weird reason, I cannot take advantage of the above lines unless I am in a tmux session or I explicitly type the following command:

source .profile

Any ideas on how to fix this?

EDIT: Adding the following line to .xsessionrc fixed the issue (haven't checked for wayland sessions though).

. $HOME/.profile

#Debian #Debian11 #foss #floss #libre_software #applications #desktop #gui #nix #flatpak #flatpaks #gnu #linux #opensource #open_source #tmux #bash #profile #shell #terminal

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Oh, thanks a lot for the efforts! You really are one of a kind to conduct an experiment to help out a stranger on the internet. Yeah, this actually works. I just added those lines to .xsessionrc and all problems were solved.

If you don't mind my asking. Do you work in IT as a sysadmin or a developer or a cybersecurity expert? Or something else? I am just curious as to how may have gained such knowledge.

Helping one another out is invisibilized, not rare. A good chunk of what I know comes from other people taking the time to explain why something works the way it does and how you can see that for yourself. The rest is from curiosity, experimentation, and hammering away at something until it fits. It's not professionally specialized knowledge.

@aebletrae @liberatedGuy this just happened to me today and I am forever grateful to that person for explaining it instead of "shit.just.works."