Hello all, I am having "a bit" of an issue trying to use a source dependency with cabal. I have a very simple setup with only 2 packages: ~/code/haskell/package-tests/a-package a.cabal src/MainA.hs and ~/code/haskell/package-tests/MinhaCommon MinhaCommon.cabal setup.hs src/MainCommon.hs I have setup a sandbox for the MinhaCommon package and can build it. However, the first one (a-package) depends on the second (MinhaCommon). So, I also created a sandbox for it as such: a-package>cabal sandbox init and that seems to work fine... Writing a default package environment file to /Users/dimitri/code/haskell/package-tests/a-package/cabal.sandbox.config Creating a new sandbox at /Users/dimitri/code/haskell/package-tests/a-package/.cabal-sandbox I then add the source package and install... a-package>cabal sandbox add-source '../MinhaCommon/' a-package>cabal install --only-dep Resolving dependencies... Notice: installing into a sandbox located at /Users/dimitri/code/haskell/package-tests/a-package/.cabal-sandbox Configuring MinhaCommon-0.7.0... Building MinhaCommon-0.7.0... Installed MinhaCommon-0.7.0 Updating documentation index /Users/dimitri/code/haskell/package-tests/a-package/.cabal-sandbox/share/doc/x86_64-osx-ghc-7.10.2/index.html Here's the snag! a-package>cabal configure Resolving dependencies... Configuring a-0.1.0... cabal: At least the following dependencies are missing: MinhaCommon ==0.7.0 WTF!? I just installed that! The cabal file for package 'a' just includes the MinhaCommon package thru the build-depends section (http://pastebin.com/Wpz5845k) ------------------------------------------------ name: a version: 0.1.0 build-type: Simple cabal-version: >=1.20 ---------------------------------------------- executable a main-is: MainA.hs hs-source-dirs: ./src build-depends: base >= 4.4 , unordered-containers , unix , process , stm , MinhaCommon == 0.7.0 default-language: Haskell2010 ------------------------------------------------ Any pointers on how to get this to build are much appreciated. Thanks, Dimitri