release

vmchale · Jul 25, 2018 · 4074215 · 4074215
1 parent 17f2641
commit 4074215
Show file tree

Hide file tree

Showing 2 changed files with 12 additions and 4 deletions.
diff --git a/ats-pkg/ats-pkg.cabal b/ats-pkg/ats-pkg.cabal
@@ -1,6 +1,6 @@
 cabal-version: 2.0
 name: ats-pkg
-version: 3.1.0.0
+version: 3.1.0.1
 license: BSD3
 license-file: LICENSE
 copyright: Copyright: (c) 2018 Vanessa McHale

diff --git a/ats-pkg/src/Language/ATS/Package/Build.hs b/ats-pkg/src/Language/ATS/Package/Build.hs
@@ -202,9 +202,17 @@ mkPkg mStr rba lint tim setup rs tgt v = do
 mkConfig :: Maybe String -> Rules ()
 mkConfig mStr = do
 
-    (".atspkg" </> "args") %> \out ->
-        alwaysRerun >>
-        liftIO (BSL.writeFile out (encode mStr))
+    (".atspkg" </> "args") %> \out -> do
+        alwaysRerun
+        shouldWrite <- do
+            exists <- liftIO (doesFileExist out)
+            contents <- if exists
+                then liftIO (BSL.readFile out)
+                else pure mempty
+            pure $ BSL.length contents /= 0 && encode mStr /= contents
+        if shouldWrite
+            then liftIO (BSL.writeFile out (encode mStr))
+            else mempty
 
     (".atspkg" </> "config") %> \out -> do
         need ["atspkg.dhall", ".atspkg" </> "args"]