[英]How to import adjacent module when running .hs file as script
I was following the directions here: https://haskell.fpcomplete.com/tutorial/stack-script 我正在按照这里的指示进行操作: https : //haskell.fpcomplete.com/tutorial/stack-script
I have a cabal/stack project with this file structure: 我有一个具有此文件结构的cabal / stack项目:
app/Main.hs
src/Lib.hs
I can run Main.hs with: 我可以使用以下命令运行Main.hs:
stack runghc -- app/Main.hs
that works if Main.hs does not import Lib.hs, but if it does, I get this error: 如果Main.hs不导入Lib.hs,则可以正常工作,但如果可以,则出现此错误:
app/Main.hs:3:1: error:
Ambiguous module name ‘Lib’:
it was found in multiple packages:
haskell-starter-0.1.0.0 libiserv-8.6.3
|
3 | import Lib
| ^^^^^^^^^^
is there anyway to include the src/Lib.hs file in the build? 无论如何在构建中包括src / Lib.hs文件? For a package it would look like:
对于软件包,它看起来像:
stack runghc --package xyz -- app/Main.hs
but what about for a module or file? 但是模块或文件呢? Something like:
就像是:
stack runghc --module src/Lib.hs -- app/Main.hs
? ?
Update : So I tried this: 更新 :所以我尝试了这个:
stack runghc -- -i src/* app/Main.hs
And I got: 我得到:
src/Lib.hs:0:66: error: • Variable not in scope: main :: IO a0 • Perhaps you meant 'min' (imported from Prelude)
You need to pass runghc
the -i
option to tell it about include paths. 您需要传递
runghc
-i
选项以告知它包含路径。 The following should work: 以下应该工作:
stack runghc -- -isrc app/Main.hs
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