我正在 Windows 8 上使用 Stack 0.1.3.1 创建一个新的 Haskell 项目。我的stack.yaml文件如下所示：
flags: {}
packages:
- 'lazy-engine'
extra-deps: []
resolver: lts-3.4
当我运行stack buildorstack test时，一切正常。我可以从命令行haddock手动运行，也可以。但是当我运行时，stack haddock我得到这样的输出：
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
显然这是胡说八道——我不应该添加base到我extra-deps的 . 这里发生了什么？
更新：正如下面的答案中所讨论的，这似乎是堆栈中的一个错误，应该在较新的版本中修复。请参阅https://github.com/fpco/minghc/issues/85。