Move tests to exe

app/Niv.hs

@@ -7,7 +7,7 @@
 {-# LANGUAGE TupleSections #-}
 {-# LANGUAGE ViewPatterns #-}
 
-module Niv where
+module Main where
 
 import Control.Applicative
 import Control.Monad
@@ -18,7 +18,6 @@ import Data.Hashable (Hashable)
 import Data.Maybe (fromMaybe)
 import Data.String.QQ (s)
 import Niv.GitHub
-import Niv.Test
 import Niv.Update
 import System.Exit (exitFailure)
 import System.FilePath ((</>), takeDirectory)
@@ -36,7 +35,6 @@ import qualified GitHub as GH
 import qualified Options.Applicative as Opts
 import qualified Options.Applicative.Help.Pretty as Opts
 import qualified System.Directory as Dir
-import qualified Test.Tasty as Tasty
 
 main :: IO ()
 main = join $ Opts.execParser opts
@@ -153,13 +151,6 @@ parsePackageSpec =
 parsePackage :: Opts.Parser (PackageName, PackageSpec)
 parsePackage = (,) <$> parsePackageName <*> parsePackageSpec
 
--------------------------------------------------------------------------------
--- PACKAGE SPEC OPS
--------------------------------------------------------------------------------
-
-test :: IO ()
-test = Tasty.defaultMain $ Niv.Test.tests
-
 -------------------------------------------------------------------------------
 -- INIT
 -------------------------------------------------------------------------------

app/test.hs

@@ -0,0 +1,8 @@
+module Main where
+
+import Niv.Test
+import qualified Test.Tasty as Tasty
+
+main :: IO ()
+main = Tasty.defaultMain $ Niv.Test.tests
+

default.nix

@@ -50,6 +50,9 @@ rec
 
   tests = pkgs.callPackage ./tests { inherit niv; };
 
+  niv-test = pkgs.runCommand "niv-test" { buildInputs = [ niv ] ; }
+    "niv-test && touch $out";
+
   readme = pkgs.writeText "README.md"
     (with
       { template = builtins.readFile ./README.tpl.md;

package.yaml

@@ -27,9 +27,7 @@ library:
 
 executables:
     niv:
-        source-dirs:
-            - app
-        main: Niv.main
+        main: app/niv.hs
         data-files:
             - nix/sources.nix
         dependencies:
@@ -45,5 +43,9 @@ executables:
             - optparse-applicative
             - process
             - string-qq
-            - tasty
             - unordered-containers
+    niv-test:
+        main: app/test.hs
+        dependencies:
+            - tasty
+            - niv