diff --git a/Changelog.md b/Changelog.md
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,3 +1,7 @@
+## 0.4.2
+
+- `findConfig` respects `CABAL_DIR` environment variable
+
 ## 0.4.1
 
 - Use `Cabal-3.4`
diff --git a/cabal-install-parsers.cabal b/cabal-install-parsers.cabal
--- a/cabal-install-parsers.cabal
+++ b/cabal-install-parsers.cabal
@@ -1,6 +1,6 @@
 cabal-version:      2.2
 name:               cabal-install-parsers
-version:            0.4.1
+version:            0.4.2
 synopsis:           Utilities to work with cabal-install files
 description:
   @cabal-install-parsers@ provides parsers for @cabal-install@ files:
@@ -21,7 +21,7 @@
 category:           Development
 build-type:         Simple
 tested-with:
-  GHC ==8.2.2 || ==8.4.4 || ==8.6.5 || ==8.8.4 || ==8.10.3
+  GHC ==8.2.2 || ==8.4.4 || ==8.6.5 || ==8.8.4 || ==8.10.4 || ==9.0.1
 
 extra-source-files:
   Changelog.md
@@ -54,7 +54,7 @@
 
   -- GHC-boot libraries
   build-depends:
-    , base          >=4.10     && <4.15
+    , base          >=4.10     && <4.16
     , binary        ^>=0.8.5
     , bytestring    ^>=0.10.8.1
     , Cabal         ^>=3.4.0.0
@@ -99,7 +99,7 @@
 
   -- dependencies needing explicit constraints
   build-depends:
-    , tasty        ^>=1.2.3 || ^>=1.3.1
+    , tasty        ^>=1.2.3 || ^>=1.3.1 || ^>=1.4
     , tasty-hunit  ^>=0.10.0.2
 
 test-suite cabal-parsers-golden
@@ -122,9 +122,9 @@
   -- dependencies needing explicit constraints
   build-depends:
     , ansi-terminal  >=0.10    && <0.12
-    , tasty          ^>=1.2.3 || ^>=1.3.1
+    , tasty          ^>=1.2.3 || ^>=1.3.1 || ^>=1.4
     , tasty-golden   ^>=2.3.1.1
-    , tree-diff      ^>=0.1
+    , tree-diff      ^>=0.2
 
 benchmark cabal-parsers-bench
   default-language: Haskell2010
diff --git a/src/Cabal/Config.hs b/src/Cabal/Config.hs
--- a/src/Cabal/Config.hs
+++ b/src/Cabal/Config.hs
@@ -52,7 +52,7 @@
 -- Read config
 -------------------------------------------------------------------------------
 
--- | High level convinience function to find and read @~\/.cabal\/config@ file
+-- | High level convenience function to find and read @~\/.cabal\/config@ file
 --
 -- May throw 'IOException' when file doesn't exist, and 'ParseError'
 -- on parse error.
@@ -74,8 +74,9 @@
     case env of
         Just p -> return p
         Nothing -> do
-            c <- getAppUserDataDirectory "cabal"
-            return (c </> "config")
+            cabalDirVar <- lookupEnv "CABAL_DIR"
+            cabalDir <- maybe (getAppUserDataDirectory "cabal") return cabalDirVar
+            return (cabalDir </> "config")
 
 -------------------------------------------------------------------------------
 -- Config
diff --git a/test/Golden.hs b/test/Golden.hs
--- a/test/Golden.hs
+++ b/test/Golden.hs
@@ -9,7 +9,7 @@
 import Text.PrettyPrint           (Doc, render)
 
 import qualified Data.ByteString as BS
-import qualified Data.Map.Strict as Map
+import qualified Data.TreeDiff.OMap as OMap
 
 import Distribution.Fields           (PrettyField (..))
 import Distribution.Types.SourceRepo (KnownRepoType, RepoKind, RepoType, SourceRepo)
@@ -36,7 +36,7 @@
 -------------------------------------------------------------------------------
 
 instance (ToExpr uri, ToExpr opt, ToExpr pkg) => ToExpr (Project uri opt pkg) where
-    toExpr prj = Rec "Project" $ Map.fromList
+    toExpr prj = Rec "Project" $ OMap.fromList
         [ field "prjPackages"     prjPackages
         , field "prjOptPackages"  prjOptPackages
         , field "prjUriPackages"  prjUriPackages