diff --git a/gf.cabal b/gf.cabal
index e5cd46e32..711acaeb2 100644
--- a/gf.cabal
+++ b/gf.cabal
@@ -41,11 +41,11 @@ data-files:
 
 custom-setup
   setup-depends:
-    base,
-    Cabal >=1.22.0.0,
+    base >= 4.9.1 && < 4.15,
+    Cabal >= 1.22.0.0,
     directory >= 1.3.0 && < 1.4,
     filepath >= 1.4.1 && < 1.5,
-    process >=1.0.1.1
+    process >= 1.0.1.1 && < 1.7
 
 source-repository head
   type: git
@@ -75,20 +75,23 @@ library
   default-language: Haskell2010
   build-depends:
     -- GHC 8.0.2 to GHC 8.10.4
-    base >= 4.9.1 && < 4.15,
     array >= 0.5.1 && < 0.6,
-    containers >= 0.5.7 && < 0.7,
+    base >= 4.9.1 && < 4.15,
     bytestring >= 0.10.8 && < 0.11,
-    utf8-string >= 1.0.1.1 && < 1.1,
-    random >= 1.1 && < 1.3,
-    pretty >= 1.1.3 && < 1.2,
-    mtl >= 2.2.1 && < 2.3,
-    -- For compatability with GHC < 8
+    containers >= 0.5.7 && < 0.7,
     exceptions >= 0.8.3 && < 0.11,
-    fail >= 4.9.0 && < 4.10,
+    ghc-prim >= 0.5.0 && < 0.7,
+    mtl >= 2.2.1 && < 2.3,
+    pretty >= 1.1.3 && < 1.2,
+    random >= 1.1 && < 1.3,
+    utf8-string >= 1.0.1.1 && < 1.1,
     -- We need transformers-compat >= 0.6.3, but that is only in newer snapshots where it is redundant.
-    transformers-compat >= 0.5.1.4 && < 0.7,
-    ghc-prim >= 0.5.0 && < 0.7
+    transformers-compat >= 0.5.1.4 && < 0.7
+
+  if impl(ghc<8.0)
+    build-depends:
+      fail >= 4.9.0 && < 4.10
+
   hs-source-dirs: src/runtime/haskell
 
   other-modules:
@@ -152,13 +155,13 @@ library
 ---- GF compiler as a library:
 
   build-depends:
-    filepath >= 1.4.1 && < 1.5,
     directory >= 1.3.0 && < 1.4,
-    time >= 1.6.0 && < 1.10,
-    process >= 1.4.3 && < 1.7,
+    filepath >= 1.4.1 && < 1.5,
     haskeline >= 0.7.3 && < 0.9,
+    json >= 0.9.1 && < 0.11,
     parallel >= 3.2.1.1 && < 3.3,
-    json >= 0.9.1 && < 0.11
+    process >= 1.4.3 && < 1.7,
+    time >= 1.6.0 && < 1.10
 
   hs-source-dirs: src/compiler
   exposed-modules:
@@ -292,9 +295,9 @@ library
 
   if flag(server)
     build-depends:
+      cgi >= 3001.3.0.2 && < 3001.6,
       httpd-shed >= 0.4.0 && < 0.5,
-      network>=2.3 && <2.7,
-      cgi >= 3001.3.0.2 && < 3001.6
+      network>=2.3 && <2.7
     if flag(network-uri)
       build-depends:
         network-uri >= 2.6.1.0 && < 2.7,
@@ -346,8 +349,8 @@ library
       Win32 >= 2.3.1.1 && < 2.7
   else
     build-depends:
-      unix >= 2.7.2 && < 2.8,
-      terminfo >=0.4.0 && < 0.5
+      terminfo >=0.4.0 && < 0.5,
+      unix >= 2.7.2 && < 2.8
 
   if impl(ghc>=8.2)
     ghc-options: -fhide-source-paths
diff --git a/src/compiler/GF/Interactive2.hs b/src/compiler/GF/Interactive2.hs
index 6967309b9..d429b4530 100644
--- a/src/compiler/GF/Interactive2.hs
+++ b/src/compiler/GF/Interactive2.hs
@@ -437,7 +437,7 @@ wc_type = cmd_name
         x2 = takeWhile (\c -> isIdent c || isSpace c || c == '-' || c == '=' || c == '"') x1
 
         cmd = case [x | (x,cs) <- RP.readP_to_S pCommand x2, all isSpace cs] of
-	        [x] -> Just x
+                [x] -> Just x
                 _   -> Nothing
 
     isIdent c = c == '_' || c == '\'' || isAlphaNum c
diff --git a/src/compiler/SimpleEditor/Syntax.hs b/src/compiler/SimpleEditor/Syntax.hs
index 4a5eb6da8..8280ed461 100644
--- a/src/compiler/SimpleEditor/Syntax.hs
+++ b/src/compiler/SimpleEditor/Syntax.hs
@@ -23,10 +23,10 @@ data Fun      = Fun      { fname:: FunId, ftype:: Type }
 
 data Concrete = Concrete { langcode:: Id,
                            opens:: [ModId],
-		           params:: [Param],
-		           lincats:: [Lincat],
-		           opers:: [Oper],
-		           lins:: [Lin] }
+                           params:: [Param],
+                           lincats:: [Lincat],
+                           opers:: [Oper],
+                           lins:: [Lin] }
                 deriving Show
 
 data Param  = Param  {pname:: Id, prhs:: String}              deriving Show
diff --git a/src/runtime/haskell/pgf.cabal b/src/runtime/haskell/pgf.cabal
index ab54be441..41e67f6ae 100644
--- a/src/runtime/haskell/pgf.cabal
+++ b/src/runtime/haskell/pgf.cabal
@@ -14,17 +14,19 @@ tested-with: GHC==7.10.3, GHC==8.0.2, GHC==8.10.4
 library
   default-language: Haskell2010
   build-depends:
-    base >= 4.9.1 && < 4.15,
     array >= 0.5.1 && < 0.6,
-    containers >= 0.5.7 && < 0.7,
+    base >= 4.9.1 && < 4.15,
     bytestring >= 0.10.8 && < 0.11,
-    utf8-string >= 1.0.1.1 && < 1.1,
-    random >= 1.1 && < 1.3,
-    pretty >= 1.1.3 && < 1.2,
-    mtl >= 2.2.1 && < 2.3,
+    containers >= 0.5.7 && < 0.7,
     ghc-prim >= 0.5.0 && < 0.7,
-    -- For compatability with GHC < 8
-    fail >= 4.9.0 && < 4.10
+    mtl >= 2.2.1 && < 2.3,
+    pretty >= 1.1.3 && < 1.2,
+    random >= 1.1 && < 1.3,
+    utf8-string >= 1.0.1.1 && < 1.1
+
+  if impl(ghc<8.0)
+    build-depends:
+      fail >= 4.9.0 && < 4.10
 
   other-modules:
     -- not really part of GF but I have changed the original binary library
diff --git a/src/server/URLEncoding.hs b/src/server/URLEncoding.hs
index 881ca21cd..1a8f579b2 100644
--- a/src/server/URLEncoding.hs
+++ b/src/server/URLEncoding.hs
@@ -6,9 +6,9 @@ import Data.Char (chr,digitToInt,isHexDigit)
 -- | Decode hexadecimal escapes
 urlDecodeUnicode :: String -> String
 urlDecodeUnicode [] = ""
-urlDecodeUnicode ('%':'u':x1:x2:x3:x4:s) 
+urlDecodeUnicode ('%':'u':x1:x2:x3:x4:s)
     | all isHexDigit [x1,x2,x3,x4] =
-    chr (    digitToInt x1 `shiftL` 12 
+    chr (    digitToInt x1 `shiftL` 12
          .|. digitToInt x2 `shiftL` 8
          .|. digitToInt x3 `shiftL` 4
          .|. digitToInt x4) : urlDecodeUnicode s
@@ -45,8 +45,8 @@ fromhex2 d1 d2 = 16*digitToInt d1+digitToInt d2
 -- Repeatedly extract (and transform) values until a predicate hold.  Return the list of values.
 unfoldr :: (a -> (b, a)) -> (a -> Bool) -> a -> [b]
 unfoldr f p x | p x       = []
-	      | otherwise = y:unfoldr f p x'
-			      where (y, x') = f x
+              | otherwise = y:unfoldr f p x'
+                              where (y, x') = f x
 
 chopList :: ([a] -> (b, [a])) -> [a] -> [b]
 chopList f l = unfoldr f null l
@@ -54,8 +54,8 @@ chopList f l = unfoldr f null l
 breakAt :: (Eq a) => a -> [a] -> ([a], [a])
 breakAt _ [] = ([], [])
 breakAt x (x':xs) =
-	if x == x' then
-	    ([], xs)
-	else
-	    let (ys, zs) = breakAt x xs
-	    in  (x':ys, zs)
+    if x == x' then
+        ([], xs)
+    else
+        let (ys, zs) = breakAt x xs
+        in  (x':ys, zs)
diff --git a/src/server/transfer/Fold.hs b/src/server/transfer/Fold.hs
index 61f0d4b34..165e762fb 100644
--- a/src/server/transfer/Fold.hs
+++ b/src/server/transfer/Fold.hs
@@ -13,14 +13,14 @@ fold t =
   case unApp t of
     Just (i,[x])  ->
         case M.lookup i foldable of
-	        Just j -> appFold j x
-	        _      -> mkApp i [fold x]
+          Just j -> appFold j x
+          _      -> mkApp i [fold x]
     Just (i,xs)   -> mkApp i $ map fold xs
     _             -> t
 
 appFold :: CId -> Tree -> Tree
-appFold j t = 
+appFold j t =
   case unApp t of
     Just (i,[t,ts]) | isPre i "Cons"  -> mkApp j [fold t, appFold j ts]
     Just (i,[t,s])  | isPre i "Base"  -> mkApp j [fold t, fold s]
-  where isPre i s = take 4 (show i) == s
\ No newline at end of file
+  where isPre i s = take 4 (show i) == s