My standard config.rb for compass

config.rb

# Require any additional compass plugins here.

# Set this to the root of your project when deployed:
http_path = "/"
css_dir = "css"
sass_dir = "sass"
images_dir = "img"
javascripts_dir = "js"

# You can select your preferred output style
# here (can be overridden via the command line):
# output_style = :expanded or :nested or :compact or :compressed

output_style = :nested

# To enable relative paths to assets via
# compass helper functions. Uncomment:
# relative_assets = true

# To disable debugging comments that display the
# original location of your selectors. Uncomment:
# line_comments = false

# Comment this out to default to SCSS:
# preferred_syntax = :sass

Sass::Script::Number.precision = 8

Note that starting with SASS 3.1.8, Sass::Script::Number::PRECISION is deprecated (as in "doesn't work anymore").

Instead, use Sass::Script::Number.precision = x, x being an integer defining the number digits. This defaults to 3, so to replicate your example code, it would need to be set to 8.

Thanks, just added it at the bottom of the file. Overwriting the constant was just a stop-gap solution. Thanks for the heads-up!

I think it's actually safe to remove the old (now second to last) line.