When I added the cmdtheline package to the dependency list in my project, and reconfigured, I ended up with this warning: code: -------- $ cabal configure Resolving dependencies... Configuring edge-0.8.19... Warning: This package indirectly depends on multiple versions of the same package. This is highly likely to cause a compile failure. package gloss-1.7.6.6 requires bytestring-0.10.0.1 package bmp-1.2.3.2 requires bytestring-0.10.0.1 package binary-0.5.1.1 requires bytestring-0.10.0.1 package unix-2.5.1.0 requires bytestring-0.9.2.1 package text-0.11.2.1 requires bytestring-0.9.2.1 package parsec-3.1.3 requires bytestring-0.9.2.1 -------- However, so far, the project seems to build fine, even using some of the cmdtheline functions and data types. So, is this something I can ignore, or is this going to cause me problems down the road? -- frigidcode.com