diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+0.2.5
+=====
+
+*   `Configuration.Utils.Setup`: export `mkPkgInfoModules` function 
+    that modifies a given `UserHooks` record to generate an `PkgInfo`
+    module during configuration.
+
 0.2.4.1
 =======
 
@@ -6,10 +13,10 @@
 0.2.4
 =====
 
-*   Configuration.Utils.Setup: fixed generation of 'PkgInfo' module for
+*   Configuration.Utils.Setup: fixed generation of `PkgInfo` module for
     package configurations with explict flags.
 
-*   Improved documentation for 'Maybe' values.
+*   Improved documentation for `Maybe` values.
 
 0.2.3
 =====
diff --git a/configuration-tools.cabal b/configuration-tools.cabal
--- a/configuration-tools.cabal
+++ b/configuration-tools.cabal
@@ -3,7 +3,7 @@
 -- ------------------------------------------------------ --
 
 Name:                configuration-tools
-Version:             0.2.4.1
+Version:             0.2.5
 Synopsis:            Tools for specifying and parsing configurations
 description:
     Tools for specifying and parsing configurations
@@ -54,7 +54,7 @@
 source-repository this
     type: git
     location: https://github.com/alephcloud/hs-configuration-tools.git
-    tag: 0.2.4.1
+    tag: 0.2.5
 
 Library
     hs-source-dirs: src
diff --git a/constraints b/constraints
--- a/constraints
+++ b/constraints
@@ -11,7 +11,7 @@
              bytestring ==0.10.4.0,
              comonad ==4.2,
              conduit ==1.1.6,
-             configuration-tools ==0.2.4.1,
+             configuration-tools ==0.2.5,
              containers ==0.5.5.1,
              contravariant ==0.6,
              deepseq ==1.3.0.2,
diff --git a/src/Configuration/Utils/Setup.hs b/src/Configuration/Utils/Setup.hs
--- a/src/Configuration/Utils/Setup.hs
+++ b/src/Configuration/Utils/Setup.hs
@@ -26,7 +26,7 @@
 --
 -- = Usage as Setup Script
 --
--- There are two ways how this module can be used:
+-- There are three ways how this module can be used:
 --
 -- 1. Copy the code of this module into a file called @Setup.hs@ in the root
 --    directory of your package.
@@ -38,7 +38,18 @@
 --    >
 --    > import Configuration.Utils.Setup
 --
--- With both methods the field @Build-Type@ in the package description (cabal) file
+-- 3. For usage within a more complex @Setup.hs@ script you shall import this
+--    module qualified and use the 'mkPkgInfoModules' function. For example:
+--
+--    > module Main (main) where
+--    >
+--    > import qualified Configuration.Utils.Setup as ConfTools
+--    >
+--    > main :: IO ()
+--    > main = defaultMainWithHooks (ConfTools.mkPkgInfoModules simpleUserHooks)
+--    >
+--
+-- With all methods the field @Build-Type@ in the package description (cabal) file
 -- must be set to @Custom@:
 --
 -- > Build-Type: Custom
@@ -90,7 +101,10 @@
 -- [@--license@]
 --     prints the text of the lincense of the application and exits.
 --
-module Configuration.Utils.Setup (main) where
+module Configuration.Utils.Setup
+( main
+, mkPkgInfoModules
+) where
 
 import Distribution.PackageDescription
 import Distribution.Simple
@@ -116,18 +130,52 @@
 import System.Directory (doesFileExist, doesDirectoryExist, createDirectoryIfMissing)
 import System.Exit (ExitCode(ExitSuccess))
 
+-- | Include this function when your setup doesn't contain any
+-- extra functionality.
+--
 main :: IO ()
-main = defaultMainWithHooks simpleUserHooks
-    { postConf = mkPkgInfoModules
+main = defaultMainWithHooks (mkPkgInfoModules simpleUserHooks)
+
+-- | Modifies the given record of hooks by adding functionality that
+-- creates a package info module for each component of the cabal package.
+--
+-- This function is intended for usage in more complex @Setup.hs@ scripts.
+-- If your setup doesn't contain any other function you can just import
+-- the 'main' function from this module.
+--
+-- The modules are created in the /autogen/ build directory where also the
+-- @Path_@ module is created by cabal's simple build setup. This is usually the
+-- directory @.\/dist\/build\/autogen@.
+--
+-- For a library component the module is named just @PkgInfo@. For all other
+-- components the module is named @PkgInfo_COMPONENT_NAME@ where
+-- @COMPONENT_NAME@ is the name of the component with @-@ characters replaced by
+-- @_@.
+--
+mkPkgInfoModules
+    :: UserHooks
+    -> UserHooks
+mkPkgInfoModules hooks = hooks
+    { postConf = mkPkgInfoModulesPostConf (postConf hooks)
     }
+
+mkPkgInfoModulesPostConf
+    :: (Args -> ConfigFlags -> PackageDescription -> LocalBuildInfo -> IO ())
+    -> Args
+    -> ConfigFlags
+    -> PackageDescription
+    -> LocalBuildInfo
+    -> IO ()
+mkPkgInfoModulesPostConf hook args flags pkgDesc bInfo = do
+    mkModules
+    hook args flags pkgDesc bInfo
   where
-    mkPkgInfoModules _ _ pkgDesc bInfo = mapM_ (f . \(a,_,_) -> a) $ componentsConfigs bInfo
-      where
-        f cname = case cname of
-            CLibName -> updatePkgInfoModule Nothing pkgDesc bInfo
-            CExeName s -> updatePkgInfoModule (Just s) pkgDesc bInfo
-            CTestName s -> updatePkgInfoModule (Just s) pkgDesc bInfo
-            CBenchName s -> updatePkgInfoModule (Just s) pkgDesc bInfo
+    mkModules = mapM_ (f . \(a,_,_) -> a) $ componentsConfigs bInfo
+    f cname = case cname of
+        CLibName -> updatePkgInfoModule Nothing pkgDesc bInfo
+        CExeName s -> updatePkgInfoModule (Just s) pkgDesc bInfo
+        CTestName s -> updatePkgInfoModule (Just s) pkgDesc bInfo
+        CBenchName s -> updatePkgInfoModule (Just s) pkgDesc bInfo
 
 pkgInfoModuleName :: Maybe String -> String
 pkgInfoModuleName Nothing = "PkgInfo"
@@ -147,9 +195,9 @@
 getVCS =
     doesDirectoryExist ".hg" >>= \x0 -> if x0
     then return (Just Mercurial)
-    else doesDirectoryExist ".git" >>= \x1 -> if x1
-    then return (Just Git)
-    else return Nothing
+    else doesDirectoryExist ".git" >>= \x1 -> return $ if x1
+        then Just Git
+        else Nothing
 
 flagNameStr :: FlagName -> String
 flagNameStr (FlagName s) = s