Haskell - 自定義預處理器的包裝cabal包

我已經實現了一個自定義預處理器，它可以創建* .hs文件形式* .tpl文件。它通過使用Build-Type: Custom在Setup.hs中指定。一切工作正常，但我不能從它創建tar.gz包（使用cabal sdist）。Haskell - 自定義預處理器的包裝cabal包

Cabal抱怨說，它無法找到由預處理器生成的裸露模塊。該錯誤消息是

cabal: Error: Could not find module with any 
suffix: ["gc","chs","hsc","x","y","ly","cpphs","hs","lhs"]

怎樣才能讓驚天動地知道的事實，該模塊是不缺的，或者可能添加第三方物流到已知文件的擴展，還是什麼？

來源

2013-04-27 scravy

你能告訴我們你的'.cabal'文件？ – 2013-04-28 07:29:38

我認爲你需要的是編寫一個自定義的sdist鉤子，然後用'Setup sdist'建立tarball（因爲https://github.com/haskell/cabal/issues/403）。 – 2013-04-28 07:47:12

實際上，我認爲這隻會運行'Setup sdist'。 – 2013-04-28 08:53:44

這是a known issue with cabal sdist。改爲使用./dist/setup/setup sdist。

下面是一個例子：

$ cat preprocessor-test.cabal 
name:    preprocessor-test 
version:    0.1.0.0 
build-type:   Custom 
cabal-version:  >=1.10 
extra-source-files: PreprocessorTest/*.prepro 

library 
    exposed-modules:  PreprocessorTest.PreprocessorTest 
    build-depends:  base ==4.5.* 
    -- hs-source-dirs: 
    default-language: Haskell2010 

$ cat Setup.hs 
#!/usr/bin/env runhaskell 

import Distribution.Simple 
import Distribution.Simple.PreProcess 
import Distribution.Simple.Utils 
import Distribution.PackageDescription 
import Distribution.Simple.LocalBuildInfo 
import System.Cmd (rawSystem) 
import System.FilePath ((</>)) 

main = let hooks = simpleUserHooks 
      dummy = ("prepro", dummyPreprocessor) 
     in defaultMainWithHooks hooks 
      { hookedPreProcessors = dummy:knownSuffixHandlers } 

dummyPreprocessor :: BuildInfo -> LocalBuildInfo -> PreProcessor 
dummyPreprocessor build local = PreProcessor { 
    platformIndependent = True, 
    runPreProcessor = 
    mkSimplePreProcessor $ \inFile outFile verbosity -> do 
     notice verbosity (inFile ++ " is being preprocessed to " ++ outFile) 
     rawSystem "cp" [inFile, outFile] 
     return() 
    } 
$ cat PreprocessorTest/PreprocessorTest.prepro 
module PreprocessorTest.PreprocessorTest 
     where 

preprocessorTest :: Int 
preprocessorTest = 1 

$ cabal configure 
Resolving dependencies... 
[1 of 1] Compiling Main    (Setup.hs, dist/setup/Main.o) 
Linking ./dist/setup/setup ... 
Configuring preprocessor-test-0.1.0.0... 

$ cabal build  
Building preprocessor-test-0.1.0.0... 
Preprocessing library preprocessor-test-0.1.0.0... 
PreprocessorTest/PreprocessorTest.prepro is being preprocessed to 
dist/build/PreprocessorTest/PreprocessorTest.hs 
[1 of 1] Compiling PreprocessorTest.PreprocessorTest (dist/build/PreprocessorTest/PreprocessorTest.hs, dist/build/PreprocessorTest/PreprocessorTest.o) 
Registering preprocessor-test-0.1.0.0... 

$ ./dist/setup/setup sdist 
Distribution quality errors: 
No 'synopsis' or 'description' field. 
The 'license' field is missing or specified as AllRightsReserved. 
Distribution quality warnings: 
No 'category' field. 
No 'maintainer' field. 
Note: the public hackage server would reject this package. 
Building source dist for preprocessor-test-0.1.0.0... 
Preprocessing library preprocessor-test-0.1.0.0... 
PreprocessorTest/PreprocessorTest.prepro is being preprocessed to 
dist/src/sdist.-6767/preprocessor-test-0.1.0.0/dist/build/PreprocessorTest/PreprocessorTest.hs 
Source tarball created: dist/preprocessor-test-0.1.0.0.tar.gz 

$ tar tzf dist/preprocessor-test-0.1.0.0.tar.gz 
preprocessor-test-0.1.0.0/ 
preprocessor-test-0.1.0.0/dist/ 
preprocessor-test-0.1.0.0/dist/build/ 
preprocessor-test-0.1.0.0/dist/build/PreprocessorTest/ 
preprocessor-test-0.1.0.0/dist/build/PreprocessorTest/PreprocessorTest.hs 
preprocessor-test-0.1.0.0/Setup.hs 
preprocessor-test-0.1.0.0/PreprocessorTest/ 
preprocessor-test-0.1.0.0/PreprocessorTest/PreprocessorTest.prepro 
preprocessor-test-0.1.0.0/preprocessor-test.cabal

來源

2013-04-28 09:20:24

謝謝，這是有效的。 – scravy 2013-04-28 09:51:19

Haskell - 自定義預處理器的包裝cabal包

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