haskell – 使用alex / happy与Cabal

我正在为一个我正在学习的课程编写一个编译器.该类并不是 Haskell,但是我使用 Haskell来编写我的编译器和解释器.我有一个cabal包装,希望能让我的prof运行/编译变得容易.对于这两个可执行文件,我在build-tools字段中都有快乐和alex,但是Cabal忽略了,然后抱怨说它找不到Happy和Alex应该生成的模块.如果我手动运行:

alex LimpScanner.x
happy LimpParser.y

然后cabal运行完美.

我以为我早已自动运行它们,但也许我记得不完美.

limp.cabal:

-- limp.cabal auto-generated by cabal init. For additional options,
-- see
-- http://www.haskell.org/cabal/release/cabal-latest/doc/users-guide/authors.html#pkg-descr.
-- The name of the package.
Name:                limp

-- The package version. See the Haskell package versioning policy
-- (http://www.haskell.org/haskellwiki/Package_versioning_policy) for
-- standards guiding when and how versions should be incremented.
Version:             0.1

-- A short (one-line) description of the package.
Synopsis:            LIMP Compiler (Compiler Construction course project)

-- A longer description of the package.
-- Description:         

-- URL for the project homepage or repository.
Homepage:            http://www.cs.rit.edu/~eca7215/limp/

-- The license under which the package is released.
License:             AllRightsReserved

-- The file containing the license text.
License-file:        LICENSE

-- The package author(s).
Author:              Edward Amsden

-- An email address to which users can send suggestions, bug reports,
-- and patches.
Maintainer:          eca7215@cs.rit.edu

-- A copyright notice.
-- Copyright:           

Category:            Language

Build-type:          Simple

-- Extra files to be distributed with the package, such as examples or
-- a README.
-- Extra-source-files:  

-- Constraint on the version of Cabal needed to build this package.
Cabal-version:       >=1.2


Executable limp
  -- .hs or .lhs file containing the Main module.
  Main-is: Limp.hs

  hs-source-dirs: src     

  -- Packages needed in order to build this package.
  Build-depends: base, array, haskell98     

  -- Modules not exported by this package.
  -- Other-modules:       

  -- Extra tools (e.g. alex, hsc2hs, ...) needed to build the source.
  Build-tools:         alex, happy
Executable limpi
  Main-is: LimpInterpreter.hs
  hs-source-dirs: src
  Build-depends: base, array, haskell98
  Build-tools: alex, happy

目录布局:

limp/
├── Setup.hs
├── limp.cabal
└── src/
    ├── Limp.hs
    ├── LimpInterpreter.hs
    ├── LimpParser.ly
    ├── LimpScanner.x
    └── LimpToken.hs
对于沃伦·哈里斯和其他喜欢他(和我自己)的人来说,其他模块需要被设置为一个模块名称列表(我猜这个)是由构建工具中列出的工具构建的.

所以,在我的情况下,我的.cabal文件的相关部分最终看起来像这样:

build-tools:         alex, happy
other-modules:       Language.Heidi.Parser,
                     Language.Heidi.Lexer
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