when I want to install cabal by stack, an error occured:
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~$ stack install cabal
Error: While constructing the build plan, the following exceptions were encountered:
In the dependencies for cabal-0.0.0.0: youProbablyWantCapitalCabal must match <0 && >1, but the stack configuration has no specified version (no package with that name found, perhaps there is a typo in a package's build-depends or an omission from the stack.yaml packages list?) needed since cabal is a build target.
Some different approaches to resolving this:
- Consider trying 'stack solver', which uses the cabal-install solver to attempt to find some working build configuration. This can be convenient when dealing with many complicated constraint errors, but results may be unpredictable.
Plan construction failed.
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Then I try to use stack solver to solve it following the hint. But it still failed:
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~$ stack solver
Using configuration file: stack.yaml
Using cabal packages:
- cabel/
No changes needed to stack.yaml
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It seems that I should configured the stack.yaml. But What should I Do? Thanks in advance.
