ZSH config file is really heavy

Hi,

I tried to source $(pew shell_config) in my .zshrc to have a feedback on the venv I am using, in my prompt. However, it adds 2 extra seconds or so to spawn a new ZSH shell, which is a lot for such a basic feature.

Is it normal? Expected?

Thanks

EDIT: Plus it messes with my PS1, breaking new lines etc.

[mjlbach]

@ashwinvis There are two ways to speed up a shell start using pew.

1. If you’re using a framework like Oh My Zsh or Prezto that loads compinit, you can see a large speedup by deleting compinit from line 2 of PEW’s init.zsh file. For example, mine is located at “/usr/local/lib/python3.6/site-packages/pew/shell_config/init.zsh” As long as pew is sourced after the framework (at the end of .zshrc in my case) this will result in a speedup of roughly 0.7 seconds without losing completion. Loading completion is one of the biggest slowdowns with shell startup.

2. If you use the python2 package for pew, shell start-up is about 0.2 seconds faster, presumably because python 2 still starts up faster than python 3 (even 3.7 by ~2 fold)

[Phyks]

Let me know if you have any test in mind that I could do to debug it further.

Here is a quick comparison on another laptop, same issue:

Without the source line:

% time zsh -c "source /home/lucas/.zshrc"
zsh -c "source /home/lucas/.zshrc"  0,05s user 0,01s system 103% cpu 0,060 total

With the source line:

% time zsh -c "source /home/lucas/.zshrc"
zsh -c "source /home/lucas/.zshrc"  0,38s user 0,11s system 99% cpu 0,494 total