gistfile1.txt

§ mkvirtualenv philtest
New python executable in /Users/matthew/.virtualenvs/philtest/bin/python
Installing setuptools, pip, wheel...done.
virtualenvwrapper.user_scripts creating /Users/matthew/.virtualenvs/philtest/bin/predeactivate
virtualenvwrapper.user_scripts creating /Users/matthew/.virtualenvs/philtest/bin/postdeactivate
virtualenvwrapper.user_scripts creating /Users/matthew/.virtualenvs/philtest/bin/preactivate
virtualenvwrapper.user_scripts creating /Users/matthew/.virtualenvs/philtest/bin/postactivate
virtualenvwrapper.user_scripts creating /Users/matthew/.virtualenvs/philtest/bin/get_env_details
(philtest) § pip install watchdog libsass
Collecting watchdog
Collecting libsass
  Downloading libsass-0.13.2.tar.gz (299kB)
    100% |████████████████████████████████| 307kB 744kB/s 
Collecting PyYAML>=3.10 (from watchdog)
Collecting pathtools>=0.1.1 (from watchdog)
Collecting argh>=0.24.1 (from watchdog)
  Using cached argh-0.26.2-py2.py3-none-any.whl
Collecting six (from libsass)
  Using cached six-1.10.0-py2.py3-none-any.whl
Building wheels for collected packages: libsass
  Running setup.py bdist_wheel for libsass ... done
  Stored in directory: /Users/matthew/Library/Caches/pip/wheels/8c/d2/d7/25dbf7af5c5342db904e6fcc68e6a191b44d22ed64a010f743
Successfully built libsass
Installing collected packages: PyYAML, pathtools, argh, watchdog, six, libsass
Successfully installed PyYAML-3.12 argh-0.26.2 libsass-0.13.2 pathtools-0.1.2 six-1.10.0 watchdog-0.8.3
(philtest) § mkdir assets
(philtest) § cat > assets/foo.scss
h1 {
  color: #f00;
  &.foo {
    color: #00f;
  }
}
(philtest) § watchmedo shell-command --patterns="*.scss" --recursive --command="sassc --style compressed assets/foo.scss assets/foo.css" assets

Then touched assets/foo.scss in another tab and foo.css was created.