diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,10 @@
 # Revision history for PyF
 
+## 0.9.0.3 -- 2021-02-06
+
+- Test phase do not depend anymore on python (unless cabal flag `python_test` is
+  set). This ease the deployment / packaging process.
+
 ## 0.9.0.2 -- 2020-09-11
 
 - Version bump for megaparsec 9.0
diff --git a/PyF.cabal b/PyF.cabal
--- a/PyF.cabal
+++ b/PyF.cabal
@@ -1,6 +1,6 @@
 cabal-version:       2.4
 name:                PyF
-version:             0.9.0.2
+version:             0.9.0.3
 synopsis: Quasiquotations for a python like interpolated string formater
 description: Quasiquotations for a python like interpolated string formater.
 license:             BSD-3-Clause
@@ -11,6 +11,11 @@
 build-type:          Simple
 extra-source-files:  ChangeLog.md Readme.md test/failureCases/*.hs test/golden/*.golden
 
+Flag python_test
+    Description: Enable extensive python testing
+    Manual: True
+    Default: False
+
 library
   exposed-modules:
                   PyF
@@ -42,9 +47,12 @@
   hs-source-dirs:      test
   main-is:             Spec.hs
   other-modules: SpecUtils SpecCustomDelimiters
-  build-depends:       base, PyF, hspec, text, template-haskell, process
+  build-depends:       base, PyF, hspec, text, template-haskell
   ghc-options:         -Wall -threaded -rtsopts -with-rtsopts=-N
   default-language:    Haskell2010
+  if flag(python_test)
+    cpp-options: -DPYTHON_TEST
+    build-depends:       process
 
 test-suite pyf-overloaded
   type:                exitcode-stdio-1.0
diff --git a/Readme.md b/Readme.md
--- a/Readme.md
+++ b/Readme.md
@@ -314,6 +314,11 @@
 "+~~~~~~~~~~1111,1111"
 ```
 
+# GHC compatibility
+
+This library is tested with ghc 8.6, 8.8, 8.10 and 9.0.
+
 # Conclusion
 
 Don't hesitate to make any suggestion, I'll be more than happy to work on it.
+
diff --git a/test/SpecUtils.hs b/test/SpecUtils.hs
--- a/test/SpecUtils.hs
+++ b/test/SpecUtils.hs
@@ -1,21 +1,24 @@
+{-# LANGUAGE CPP #-}
 {-# LANGUAGE TemplateHaskell #-}
 
 module SpecUtils
   ( checkExample,
     checkExampleDiff,
-    check,
   )
 where
 
 import Language.Haskell.TH
-import Language.Haskell.TH.Syntax
 import PyF.Internal.QQ
+#ifdef PYTHON_TEST
+import Language.Haskell.TH.Syntax
 import System.Exit
 import System.Process
+#endif
 import Test.Hspec
 
 -- * Utils
 
+#ifdef PYTHON_TEST
 -- | Runs a python formatter example
 --
 -- For conveniance, it exports a few python symbols, `inf`, `nan` and pi.
@@ -59,13 +62,14 @@
 --     the same as the one provided by python.
 checkExample :: String -> String -> Q Exp
 checkExample s res = pyCheck s (Just res)
+#else
+-- | Alias for checkExampleDiff
+checkExample :: String -> String -> Q Exp
+checkExample = checkExampleDiff
+#endif
 
 -- | `checkExampleDiff formatString result` checks if, once formated,
 --     `formatString` is equal to result. It does not check the result
 --     against the python implementation
 checkExampleDiff :: String -> String -> Q Exp
 checkExampleDiff s res = [|$(toExpPython s) `shouldBe` res|]
-
--- | `check formatString` checks only with the python implementation
-check :: String -> Q Exp
-check s = pyCheck s Nothing