add-tooling (#3)

- [x] add fourmolu
- [x] add hlint
- [x]  add justfile

cabal.project

@@ -1,8 +1,7 @@
 -- repeating the index-state for hackage to work around hackage.nix parsing limitation
-index-state: 2023-06-06T00:00:00Z
 
 index-state:
-  , hackage.haskell.org 2023-06-06T00:00:00Z
+  , hackage.haskell.org 2023-08-22T11:08:41Z
   , cardano-haskell-packages 2023-06-05T06:39:32Z
 
 packages:

fourmolu.yaml

@@ -0,0 +1,21 @@
+comma-style: leading
+function-arrows: leading
+import-export-style: leading
+fixities:
+  - infixr 9  .
+  - infixr 5  ++
+  - infixl 4  <$, <$>
+  - infixl 2  >>, >>=
+  - infixr 2  =<<, <=<
+  - infixr 1  $, $!
+  - infixl 4 <*>, <*, *>, <**>
+  - infixl 6 ^.
+  - infixl 3 =.
+haddock-style: single-line
+in-style: left-align
+indent-wheres: false
+indentation: 4
+let-style: auto
+newlines-between-decls: 1
+record-brace-space: false
+respectful: true

justfile

@@ -0,0 +1,24 @@
+default:
+    just list
+
+install-tools:
+    cabal update
+    cabal install fourmolu-0.13.1.0 hlint-3.6.1 apply-refact \
+        --install-method=copy --overwrite-policy=always
+
+format:
+    fourmolu -i lib
+
+lint:
+    hlint lib 
+
+build0:
+    cabal build -v0 -O0 -j fine-types
+
+test:
+    cabal test -v0 -O0 -j unit
+
+repl: 
+    cabal repl -v0 -O0 -j
+
+prepare: format lint build0 test

lib/fine-types/fine-types.cabal

@@ -51,3 +51,16 @@ library
     base >=4.14.3.0
   exposed-modules:
     Language.FineTypes
+
+test-suite unit
+  import:      language, opts-exe
+  type:        exitcode-stdio-1.0
+  hs-source-dirs:
+    test
+  build-tool-depends:
+    hspec-discover:hspec-discover == 2.*
+  build-depends:
+    base
+    , fine-types
+  main-is:
+    Spec.hs

lib/fine-types/src/Language/FineTypes.hs

@@ -1 +1 @@
-module Language.FineTypes where
+module Language.FineTypes () where

lib/fine-types/test/Spec.hs

@@ -0,0 +1,4 @@
+import Prelude
+
+main :: IO ()
+main = putStrLn "Test suite not yet implemented"