Install Powerline in Arch Linux

bash_powerline.log

# Install powerline and powerline fonts.

sudo pacman -S powerline powerline-fonts

# Optional - Install powerline-fonts-git package from AUR to get the patched fonts.

# Remove the powerline-fonts first then:

sudo pacman -S powerline-fonts-git

# Add this to the end of the .bashrc file.

powerline-daemon -q
POWERLINE_BASH_CONTINUATION=1
POWERLINE_BASH_SELECT=1
. /usr/share/powerline/bindings/bash/powerline.sh

# Enable GIT branch.

# Create the powerline config file

mkdir -p ~/.config/powerline

# Execute this entire block on the terminal:

cat <<-'EOF' > ~/.config/powerline/config.json
{
    "ext": {
        "shell": {
            "theme": "default_leftonly"
        }
    }
}
EOF

# Apply the changes restarting the daemon.

powerline-daemon --replace

# Customizations

Set font "Droid Sans Mono Dotted for Powerline" with size 10.

Set transparency to 10%.

How do you "Set font" in the json file?

How do you "Set font" in the json file?

https://github.com/powerline/fonts

It is displaying '?' and weird characters even though I have installed powerline and powerline-fonts. I ran 'fc-cache' but nothing has changed.

Probably worth adding if you are using fancy power line you would need font-awesome for it to show correctly.
yay -S ttf-font-awesome should do it.