Haskell无法构建带有DateTime依赖关系的项目，尽管stack.yaml中有条目

Question

因此，我试图添加这个包：datetime-0.3.1和我在stack.yaml文件中添加了我认为正确的引用。我试过使用堆栈求解器，但似乎已经不存在了。我还寻找了一些等价的pip，所以我可以只做堆栈安装日期时间-0.3.1或类似的东西，但这似乎不是堆栈所做的事情。

守则：

module FhirDataTypes (
    FhirId (..),
    toFhirId
) where

import Data.Maybe (Maybe(..))
import Data.List (length)
import Coding as Coding
import Data.Decimal
import FhirUri (FhirUri(..))
import FhirString (FhirString(..))
import SimpleQuantity (SimpleQuantity(..))
import Data.DateTime

newtype FhirId = FhirId FhirString deriving (Show)

toFhirId :: FhirString -> Maybe FhirId
toFhirId fs@(FhirString s)
    | length s > 64 = Nothing
    | otherwise = Just $ FhirId fs

data Money = Money  { value :: Decimal
                    , currency :: Code
}

data Range = Range  {   low :: SimpleQuantity
                    ,   high :: SimpleQuantity
}

data Ratio = Ratio  {   numerator :: Quantity
                    ,   denominator :: Quantity
}

data Period = Period    { start :: DateTime
                        , end :: DateTime
}

我所犯的错误：

PS C:\util\haskell\fhir-practice> stack build

Error: While constructing the build plan, the following exceptions were encountered:

In the dependencies for fhir-practice-0.1.0.0:
DateTime needed, 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 fhir-practice is a build target.

Some different approaches to resolving this:


Plan construction failed.

我的stack.yaml文件：

flags: {}
packages:
- .
extra-deps: 
- network-  uri-2.6.1.0@sha256:62cc45c66023e37ef921d5fb546aca56a9c786615e05925fb193a70bf0913690
- Decimal-0.4.2
- datetime-0.3.1
resolver: lts-13.24

Answer 1

1. stack install主要用于全局安装二进制文件，而不是用于特定于项目的包。
2. 您可能希望使用time包，而不是datetime。因为前者是积极维持的。此外，在您的示例中，时间存在于LTS-13.24中，因此不需要将它添加到额外的deps中。外接-deps字段仅适用于不存在于解析器中的依赖项(包括传递依赖项)。