我试图在Haskell项目中调试性能问题，但是我无法编译成分析，所以我可以通过Approvals.SetCaller();
Assert.IsTrue(NCrunchReporter.INSTANCE.IsWorkingInThisEnvironment("a.txt"));
命令行参数来使用它。
我的+RTS -p文件中GHC的选项是：
.cabal我试图建立它：
ghc-options: -threaded -rtsopts -with-rtsopts=-N -Wall -Werror
结果是：
stack build --executable-profiling --library-profiling --ghc-options="-fprof-auto -rtsopts"
即使仅使用While constructing the BuildPlan the following exceptions were encountered:
-- Failure when adding dependencies:
base: needed (>=2 && <5), not present in build plan (latest applicable is 4.9.0.0)
mtl: needed (>=2.1 && <2.3), couldn't resolve its dependencies
random: needed (-any), couldn't resolve its dependencies
transformers: needed (>=0.3 && <0.6), couldn't resolve its dependencies
transformers-compat: needed (>=0.4 && <0.6), couldn't resolve its dependencies
needed for package: MonadRandom-0.4.2.3
-- Failure when adding dependencies:
base: needed (>=4 && <5), not present in build plan (latest applicable is 4.9.0.0)
stm: needed (>=2.0 && <2.5), couldn't resolve its dependencies
transformers: needed (>=0.2 && <0.6), couldn't resolve its dependencies
needed for package: StateVar-1.1.0.4
<snipped large log>
进行尝试也会导致同样的错误。
作为参考，我的库依赖项是：
stack build --executable-profiling如何解决这个问题，以便我可以使用堆栈编译我的项目并内置分析以用于 build-depends: base >= 4.7 && < 5
, aeson
, servant
, servant-server
, wai
, warp
, either
, bytestring
, transformers
, postgresql-simple
, amazonka
, amazonka-sqs
, lens
, text
, time
, resource-pool
？
答案 0 :(得分：3)
什么是“堆栈执行 - 哪个ghc”说的？如果您的ghc是全局安装的，那么它可能缺少分析库。如果是这样，“堆栈设置--no-system-ghc”+“堆栈构建--no-system-ghc”
你的stack.yaml配置是什么？如果您设置了“ghc- *”的解析器，除非您在“extra-deps”中指定所有依赖项的版本，否则它将无效。通常您会想要使用堆叠快照 - https://www.stackage.org/