I'm creating a new Haskell project using Stack 0.1.3.1 on Windows 8. My stack.yaml file looks like this:
flags: {}
packages:
- 'lazy-engine'
extra-deps: []
resolver: lts-3.4
When I run stack build or stack test, everything works beautifully. I can run haddock manually from the command line and that works, too. But when I run stack haddock I get output like this:
Setting codepage to UTF-8 (65001) to ensure correct output from GHC
NOTE: the haddock command is functionally equivalent to 'build --haddock'
While constructing the BuildPlan the following exceptions were encountered:
-- Failure when adding dependencies:
base: needed (>=4.5 && <4.9), latest is 4.8.1.0, but not present in build plan
needed for package: array-0.5.1.0
-- While attempting to add dependency,
Could not find package base in known packages
-- Failure when adding dependencies:
array: needed (-any), latest is 0.5.1.0, but couldn't resolve its dependencies
base: needed (>=4.2 && <5), latest is 4.8.1.0, but not present in build plan
deepseq: needed (>=1.2 && <1.5), latest is 1.4.1.2, but couldn't resolve its dependencies
ghc-prim: needed (-any), latest is 0.4.0.0, but not present in build plan
needed for package: containers-0.5.6.2
-- Failure when adding dependencies:
array: needed (>=0.3 && <0.6), latest is 0.5.1.0, but couldn't resolve its dependencies
base: needed (==4.3.* || >=4.5 && <4.9), latest is 4.8.1.0, but not present in build plan
needed for package: deepseq-1.4.1.1
-- While attempting to add dependency,
Could not find package ghc-prim in known packages
-- Failure when adding dependencies:
base: needed (>=4.7 && <5), latest is 4.8.1.0, but not present in build plan
containers: needed (==0.5.*), latest is 0.5.6.3, but couldn't resolve its dependencies
needed for package: lazy-engine-0.1.0.0
Recommended action: try adding the following to your extra-deps in
C:\Users\Aaron\Documents\GitHub\lazy-engine\stack.yaml
- base-4.8.1.0
- ghc-prim-0.4.0.0
You may also want to try the 'stack solver' command
Obviously this is nonsense—I shouldn't have to add base to my extra-deps, especially since I'm working off an LTS package set! What is going on here?
Update: As discussed in the answer below, this seems to have been a bug in stack and should be fixed in newer versions. See https://github.com/fpco/minghc/issues/85.
A guess: you're using a GHC install that does not include documentation, or at least not as stack expects it to be discovered. Can you try with "--install-ghc --no-system-ghc"? I may have the specific flag names wrong.
Also, how is GHC installed on your system?