[Bug 1800280] Re: Setting ZSH as login shell causes various issues because it doesn't source /etc/profile

[Axel Beckert]

> > What do you exactly mean by "setting ZSH as the default shell"?
>
> I just mean using chsh to set the default login shell. /bin/sh is left unchanged.

JFTR: "default" is still the wrong term for this. There is only _one_
login shell per user. "default" always suggests that there are others to
use if you don't like the default value. But there is none. The "default
login shell" is still bash because that's what new users get as their
login shell _by default_.

I changed the title of the bug report accordingly as it just confused me
again.

** Summary changed:

- Setting ZSH as the default shell causes various issues because it doesn't source /etc/profile
+ Setting ZSH as login shell causes various issues because it doesn't source /etc/profile

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https://bugs.launchpad.net/bugs/1800280

Title:
  Setting ZSH as login shell causes various issues because it doesn't
  source /etc/profile

Status in zsh package in Ubuntu:
  Confirmed

Bug description:
  When setting ZSH as the default shell, /etc/profile is never sourced
  (because ZSH instead sources its own /etc/zsh/zprofile). That's
  problematic, because /etc/profile (and the files in /etc/profile.d)
  are responsible for a bunch of important stuff. For example:

  /etc/profile.d/apps-bin-path.sh adds /var/lib/snapd/desktop to
  XDG_DATA_DIRS. Setting the default shell to ZSH means that desktop
  environments suddenly can't launch snap packages.

  /etc/profile.d/input-method-config.sh works around
  https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1720250, so
  setting the default shell to ZSH un-fixes that bug.

  Arch Linux's zsh package has `emulate sh -c 'source /etc/profile'` in
  /etc/zsh/zprofile. Either Ubuntu's zsh package should do the same (or
  something similar), or Ubuntu must put important environment variable
  stuff somewhere else and have only bash-specific stuff in /etc/profile
  and /etc/profile.d.

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