updated README.md with installation instructions for prezto

[sergiorussia]

@miekg, i really love lean prompt and want it to be included in prezto framework. so:

1. i ask for your approval to include lean into prezto. it would be included via git submodule and i already have appropriate patches for prezto
2. before being included into prezto i want to enhance lean a bit so that it will fit better. for my daily needs i use Python a lot so here's the optional Python module support

here's the demo of what it would look like with my patch:

# assuming prezto setting zstyle ':prezto:module:python:info:virtualenv' format '(py %v) '
# right side of prompt is omitted for clarity

% tmux new -s lean
t % workon someenv
t (py someenv) % vim
[1]  + 907 suspended  vim
[1+] t (py someenv) % 

% workon someenv
(py someenv) %

[miekg]

Thanks!

1. Go ahead; permission granted :-)
2. For this python stuff (I don't care at all about python :) ), just use:
   PROMPT_LEAN_LEFT and PROMPT_LEAN_RIGHT, those were added for exactly this (python) use case

[sergiorussia]

um. could you help with setting up PROMPT_LEAN_LEFT correctly? as i understand i should put export PROMPT_LEAN_LEFT="${python_info[virtualenv]}" into zshenv, but python_info is not available there. if i put it into zshrc, then it simply does nothing :(

[miekg]

[ Quoting <[email protected]> in "Re: [miekg/lean] optional support f..." ]

um. could you help with setting up PROMPT_LEAN_LEFT correctly? as i understand i should put `export PROMPT_LEAN_LEFT="${python_info[virtualenv]}"` into zshenv, but `python_info` is not available there. if i put it into zshrc, then it simply does nothing :(

I don't know - don't use these python bits...

[sergiorussia]

ok, put it another way: how can i set some dynamic info into PROMPT_LEAN_*** variables? what is the proper way? by dynamic i mean info that is changed between commands in terminal (like job count etc)

[sergiorussia]

oh i just found the way, PROMPT_LEAN_*** are being evaluated each time :)

[sergiorussia]

so i'm closing PR, no changes are required here :)

[sergiorussia]

@miekg i've updated README.md and reverted the rest

[miekg]

Ok, please drop everything (and including) after "You can custom..." as that is different then configuring pretzo.

I also don't understand what "unless lean is included" means in this context, then I don't need to do anything? How do I know it is "included"?

[sergiorussia]

why that is different? places for customizations are tied to prezto file structure and as a user i want to know where should i put them. eg prompt colors should go to zshenv, but not to zshrc, etc.

lean will be included shortly :) user can find if it is included or not via prompt command. the issue here is that prezto submodules have only README files from original repositories, ie there's no way for prezto users to know how to properly use submodule X other than looking at its included documentation

[miekg]

I don't understand. Is it included or not? If it is we don't need any of the text?

The customization bit is, frankly, pretzo's problem, so please remove it, we already have documented the various PROMPT_LEAN_( variables in the README.

[sergiorussia]

fixed, take a look

[miekg]

thank you

[sergiorussia]

@miekg , i'm adding lean to prezto here sorin-ionescu/prezto#1472 . thanks for such useful minimalist theme :)