Issue using Flask-Assets to compile less files
flask, flask-assets, less, python, webassets
Solution
`npm install` installs packages in current directory by default (you should be able to find `node_modules` directory there). You have two choices:
Install `lessc` globally:
$ npm install -g less
This way webassets will be able to find it itself.
Provide a full path to `lessc` executable:
assets = Environment(app)
assets.config['less_bin'] = '/path/to/lessc'
The path should be `<some_directory>/node_modules/.bin/lessc`.
Problem
I'm currently trying to set up a Flask web app, and trying to use `Flask-Assets` to compile my less files into minified css. Here is my assets.py file that creates the bundle. ``` from flask_assets import Bundle common_css = Bundle( 'vendor/less/theme.less', filters='less', output='static/css/common.css', ) ``` The error that I am getting is: ``` OSError: [Errno 2] No such file or directory ``` In the `webassets` documentation for the less filter, it says that: ``` This depends on the NodeJS implementation of less, installable via npm. To use the old Ruby-based version (implemented in the 1.x Ruby gem), see Less. ... LESS_BIN (binary) Path to the less executable used to compile source files. By default, the filter will attempt to run lessc via the system path. ``` I installed `less` using `$ npm install less`, but for some reason it looks like `webassets` can't use it. When I try to use different filters, then `webassets` can successfully create the bundle. Thanks!