--force-dirty flag

ChangeLog.md

@@ -7,6 +7,7 @@
 * Upper limit on number of flag combinations to test [#543](https://github.com/commercialhaskell/stack/issues/543)
 * Fuzzy matching support to give better error messages for close version numbers [#504](https://github.com/commercialhaskell/stack/issues/504)
 * --local-bin-path global option. Use to change where binaries get placed on an `stack install` [#342](https://github.com/commercialhaskell/stack/issues/342)
+* --force-dirty flag: Force treating all local packages as having dirty files (useful for cases where stack can't detect a file change)
 
 ## 0.1.2.0
 

src/Stack/Build/Source.hs

@@ -233,7 +233,7 @@ loadLocals bopts latestVersion = do
             , lpPackageFinal = pkgFinal
             , lpWanted = wanted
             , lpFiles = files
-            , lpDirtyFiles = isDirty
+            , lpDirtyFiles = isDirty || boptsForceDirty bopts
             , lpNewBuildCache = newBuildCache
             , lpCabalFile = cabalfp
             , lpDir = dir

src/Stack/Build/Types.hs

@@ -311,6 +311,8 @@ data BuildOpts =
             -- ^ Watch files for changes and automatically rebuild
             ,boptsKeepGoing :: !(Maybe Bool)
             -- ^ Keep building/running after failure
+            ,boptsForceDirty :: !Bool
+            -- ^ Force treating all local packages as having dirty files
             }
   deriving (Show)
 
@@ -331,6 +333,7 @@ defaultBuildOpts = BuildOpts
     , boptsOnlySnapshot = False
     , boptsFileWatch = False
     , boptsKeepGoing = Nothing
+    , boptsForceDirty = False
     }
 
 -- | Options for the 'FinalAction' 'DoTests'

src/Stack/Options.hs

@@ -62,7 +62,7 @@ buildOptsParser cmd =
             BuildOpts <$> target <*> libProfiling <*> exeProfiling <*>
             optimize <*> haddock <*> haddockDeps <*> finalAction <*> dryRun <*> ghcOpts <*>
             flags <*> installExes <*> preFetch <*> onlySnapshot <*>
-            fileWatch' <*> keepGoing
+            fileWatch' <*> keepGoing <*> forceDirty
   where optimize =
           maybeBoolFlags "optimizations" "optimizations for TARGETs and all its dependencies" idm
         target =
@@ -130,6 +130,10 @@ buildOptsParser cmd =
             "continue running after a step fails (default: false for build, true for test/bench)"
             idm
 
+        forceDirty = flag False True
+            (long "force-dirty" <>
+             help "Force treating all local packages as having dirty files (useful for cases where stack can't detect a file change)")
+
 -- | Parser for package:[-]flag
 readFlag :: ReadM (Map (Maybe PackageName) (Map FlagName Bool))
 readFlag = do