Mr.developer is unable to execute Mercurial (hg)

[mgol]

The issue seems related to #28, but that one was fixed 2 years ago... I downloaded the new bootstrap.py, executed it from virtualenv and then run buildout with the following result:

$ buildout 
mr.developer: Queued 'django_compressor' for checkout.
mr.developer: Queued 'django_piston' for checkout.
mr.developer: Skipped checkout of existing package 'django_compressor'.
mr.developer: Cloned 'django_piston' with mercurial.
mr.developer: hg clone for 'django_piston' failed.
mr.developer: abort: couldn't find mercurial libraries in [/usr/local/Cellar/mercurial/lib/python2.7/site-packages /usr/local/Cellar/mercurial/2.3.1/libexec /PROJECT_DIR/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg /PROJECT_DIR/lib/python2.7/site-packages/pip-1.2.1-py2.7.egg /PROJECT_DIR/lib/python27.zip /PROJECT_DIR/lib/python2.7 /PROJECT_DIR/lib/python2.7/plat-darwin /PROJECT_DIR/lib/python2.7/plat-mac /PROJECT_DIR/lib/python2.7/plat-mac/lib-scriptpackages /PROJECT_DIR/lib/python2.7/lib-tk /PROJECT_DIR/lib/python2.7/lib-old /PROJECT_DIR/lib/python2.7/lib-dynload /usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7 /usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin /usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk /usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac /usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages /PROJECT_DIR/lib/python2.7/site-packages]
mr.developer: (check your install and PYTHONPATH)
mr.developer: 
mr.developer: There have been errors, see messages above.

Due to this, I have to install mercurial in virtualenv using pip.

[fschulze]

Could you try the change from the commit above?