我是 Haskell 的新手,正在使用 Stack 在 Mac OSX 上构建一个小型个人项目。我最近在我的 cabal 文件中添加了一些新的 build-deps,但是现在当我运行时stack build
,我收到以下错误:
-- While attempting to add dependency,
Could not find package api-builder in known packages
-- Failure when adding dependencies:
api-builder: needed (==0.11.0.0), not present in build plan (latest applicable is 0.11.0.0)
http-client: needed (==0.4.20), 0.4.27 found (latest applicable is 0.4.20)
http-types: needed (==0.8.6), 0.9 found (latest applicable is 0.8.6)
needed for package: music-haskell-0.1.0.0
Recommended action: try adding the following to your extra-deps in /Users/.../src/music-haskell/stack.yaml
- api-builder-0.11.0.0
You may also want to try the 'stack solver' command
当我运行时,stack solver
我收到有关 http-types 包的错误
cabal: Could not resolve dependencies:
trying: music-haskell-0.1.0.0 (user goal)
next goal: http-types (dependency of music-haskell-0.1.0.0)
rejecting: http-types-0.9 (conflict: music-haskell => http-types==0.8.6)
rejecting: http-types-0.8.6, 0.8.5, 0.8.4, 0.8.3, 0.8.2................
(global constraint requires ==0.9)
Dependency tree exhaustively searched.
据我了解,看起来我已经安装了http-types-0.9
,但现在我需要http-types-0.8.6
. 我最初尝试使用 手动安装它$stack install http-types
,但出现以下错误:
Error parsing targets: Specified target version 0.8.6 for package http-types does not match snapshot version 0.9
当我查看是否可以这样做$ stack uninstall
但看起来已被弃用时。
我怎样才能摆脱快照/全局目标http-type
?