# This code can resolve errors while installing rmagick gem using imagemagick7 library
# First, remove imagemagick, if installed

sudo pacman -R imagemagick

# Then install imagemagick6

sudo pacman -S libmagick6
PKG_CONFIG_PATH=/usr/lib/imagemagick6/pkgconfig gem install rmagick

# or with bundler:
PKG_CONFIG_PATH=/usr/lib/imagemagick6/pkgconfig bundle install