When using zc.buildout I discovered that it installed a part that I didn't specify in the 'parts' option. This happened because I referenced this part somewhere else. Is this how it's supposed to be? I would prefer if it only installs the parts I specify in parts. I don't see anything wrong with reusing options from a part that I don't necessarily want to install. This is a buildout.cfg that will reproduce it. The 'notusedinparts' part is installed even if not specified in 'parts'. It's installed because of the 'dummy' option in the 'tok' section. Is this how it was meant to be? [buildout] develop = recipes parts = tok [tok] recipe = recipes:debug dummy = ${notusedinparts:someoption} [notusedinparts] recipe = recipes:debug someoption = why /Tim ps. I tried to send this to the distutils-sig list, but it got stuck in mailman saying "Message has a suspicious header" and it doesn't look like anyone wants to approve the email, so I'm trying here instead.