[add] cabal プロジェクト初期化

Author: Yuta1004

.gitignore

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+dist*/
+*.local
+*.tix

README.md

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+# Copager2（仮）

app/Main.hs

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+module Main where
+
+import qualified MyLib (someFunc)
+
+main :: IO ()
+main = do
+  putStrLn "Hello, Haskell!"
+  MyLib.someFunc

copager2.cabal

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+cabal-version:      3.0
+name:               copager2
+version:            0.1.0.0
+author:             NakagamiYuta
+maintainer:         guguru0014@gmail.com
+build-type:         Simple
+
+common warnings
+    ghc-options: -Wall
+
+library
+    import:           warnings
+    exposed-modules:  MyLib
+    -- other-modules:
+    -- other-extensions:
+    build-depends:    base ^>=4.17.2.1
+    hs-source-dirs:   src
+    default-language: GHC2021
+
+executable copager2
+    import:           warnings
+    main-is:          Main.hs
+    -- other-modules:
+    -- other-extensions:
+    build-depends:
+        base ^>=4.17.2.1,
+        copager2
+
+    hs-source-dirs:   app
+    default-language: GHC2021
+
+test-suite copager2-test
+    import:           warnings
+    default-language: GHC2021
+    -- other-modules:
+    -- other-extensions:
+    type:             exitcode-stdio-1.0
+    hs-source-dirs:   test
+    main-is:          Main.hs
+    build-depends:
+        base ^>=4.17.2.1,
+        copager2

src/MyLib.hs

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+module MyLib (someFunc) where
+
+someFunc :: IO ()
+someFunc = putStrLn "someFunc"

test/Main.hs

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+module Main (main) where
+
+main :: IO ()
+main = putStrLn "Test suite not yet implemented."