django-pipeline + less + glue

gistfile1.py

import os

from django.conf import settings
from pipeline.compilers import SubProcessCompiler

class LessCompiler(SubProcessCompiler):
    output_extension = "css"

    def match_file(self, filename):
        return filename.endswith(".less")

    def compile_file(self, infile, outfile, outdated=False, force=False):

        command = [
            settings.GLUE_BINARY,
            settings.GLUE_SOURCE,
            "--output=%s" % settings.GLUE_OUTPUT,
            "--less",
        ]
        self.execute_command(command)

        infile = infile.strip("'")
        outfile = outfile.strip("'")
        command = [
            settings.PIPELINE_LESS_BINARY,
            infile,
            outfile,
        ]
        if settings.DEBUG:
            command.append("--source-map=%s.map" % outfile)
            command.append("--source-map-less-inline")
        else:
            command.append("--compress")

        return self.execute_command(command, cwd=os.path.dirname(infile))