colorful iterm2 tabs based on $PWD

colorful-iterm2-tabs.zsh

# Disclaimer: yes, this is kind of silly and the implementation is definitely
# not optimal.

# Problem:
# Lately I do a lot of work in the terminal across a lot of
# directories that have similar names, and similar contents. Configuring the
# terminal window title, or tab title, with things like the current directory,
# or current foreground process, doesn't really help me keep track of what's
# where. All the tabs look the same, and even a quick `ls` usually just yields
# very similar contents. I find myself doing `pwd` often just to get
# re-oriented.
#
# Solution:
# Use the current directory to give each tab a random color. Use the directory
# as the seed to the RNG, so any tab in that directory always gets the same color.
# Use medium-saturation colors to avoid being super ugly.
#
autoload -U add-zsh-hook

change_tab_color_using_cwd() {
        tabcolor=$(python -c '''
import colorsys;
import os;
import random;
random.seed(os.getcwd());
hue = random.random();
rgb = colorsys.hsv_to_rgb(hue, .5, 1.0);
hex = "".join([hex(int(_*255))[2:] for _ in rgb]);
print(hex);
''')
        it2setcolor tab $tabcolor
}


add-zsh-hook chpwd change_tab_color_using_cwd