diff --git a/changelog.markdown b/changelog.markdown
--- a/changelog.markdown
+++ b/changelog.markdown
@@ -172,3 +172,7 @@
 
 ## 1.0.4.18
 Updated list of test-compilers.
+
+## 1.0.4.19
+Replaced module **Distribution.Verbosity** with **Squeeze.Data.Verbosity**.
+
diff --git a/debian/DEBIAN/control b/debian/DEBIAN/control
--- a/debian/DEBIAN/control
+++ b/debian/DEBIAN/control
@@ -1,5 +1,5 @@
 Package:	squeeze
-Version:	1.0.4.18-1
+Version:	1.0.4.19-1
 Section:	utils
 Priority:	optional
 Architecture:	amd64
diff --git a/squeeze.cabal b/squeeze.cabal
--- a/squeeze.cabal
+++ b/squeeze.cabal
@@ -14,7 +14,7 @@
 -- along with Squeeze.  If not, see <http://www.gnu.org/licenses/>.
 
 Name:		squeeze
-Version:	1.0.4.18
+Version:	1.0.4.19
 Cabal-version:	>= 1.10
 Copyright:	(C) 2010-2015 Dr. Alistair Ward
 License:	GPL
@@ -65,6 +65,7 @@
         Squeeze.Data.CommandOptions
         Squeeze.Data.File
         Squeeze.Data.FileCombination
+        Squeeze.Data.Verbosity
         Squeeze.Squeeze
 
 -- Required for 'cabal sdist'.
diff --git a/squeeze.spec b/squeeze.spec
--- a/squeeze.spec
+++ b/squeeze.spec
@@ -21,7 +21,7 @@
 
 Summary:	Finds the optimal subset of the specified files, to fit into a limited space, with minimal wastage
 Name:		squeeze
-Version:	1.0.4.18
+Version:	1.0.4.19
 Release:	1
 License:	GPLv3
 # From '/usr/share/doc/packages/rpm/GROUPS'.
diff --git a/src-exe/Main.hs b/src-exe/Main.hs
--- a/src-exe/Main.hs
+++ b/src-exe/Main.hs
@@ -42,11 +42,11 @@
 import qualified	Data.List
 import qualified	Data.Maybe
 import qualified	Data.Version
-import qualified	Distribution.Verbosity
 import qualified	Factory.Math.Probability
 import qualified	Paths_squeeze			as Paths	-- Either local stub, or package-instance autogenerated by 'Setup.hs build'.
 import qualified	Squeeze.Data.CommandOptions	as Data.CommandOptions
 import qualified	Squeeze.Data.File		as Data.File
+import qualified	Squeeze.Data.Verbosity		as Data.Verbosity
 import qualified	Squeeze.Squeeze			as Squeeze
 import qualified	Squeeze.Test.Performance	as Test.Performance
 import qualified	System.Console.GetOpt		as G
@@ -117,7 +117,7 @@
 --				 String	[String]		(G.ArgDescr CommandLineAction)			String
 			G.Option "?"	["help"]		(G.NoArg $ const printUsage)			"Display this help, & then exit.",
 			G.Option ""	["verbosity"]		(
-				setVerbosity `G.ReqArg` ToolShed.Data.List.showListWith listDelimiters [minBound :: Distribution.Verbosity.Verbosity .. maxBound] ""
+				setVerbosity `G.ReqArg` ToolShed.Data.List.showListWith listDelimiters [minBound :: Data.Verbosity.Verbosity .. maxBound] ""
 			)											("Define the log-level; default '" ++ show (Data.CommandOptions.getVerbosity defaultCommandOptions) ++ "'. CAVEAT: to be effective, it must precede other options."
 			),
 			G.Option "v"	["version"]		(G.NoArg $ const printVersion)			"Print version-information, & then exit.",
diff --git a/src-lib/Squeeze/Data/CommandOptions.hs b/src-lib/Squeeze/Data/CommandOptions.hs
--- a/src-lib/Squeeze/Data/CommandOptions.hs
+++ b/src-lib/Squeeze/Data/CommandOptions.hs
@@ -47,18 +47,18 @@
 
 import			Control.Arrow((&&&))
 import qualified	Data.Default
-import qualified	Distribution.Verbosity
 import qualified	Factory.Data.Interval
 import qualified	Squeeze.Data.File	as Data.File
+import qualified	Squeeze.Data.Verbosity	as Data.Verbosity
 import qualified	ToolShed.SelfValidate
 
 -- | Declares a record to contain command-line options.
 data CommandOptions ratio	= MkCommandOptions {
-	getIncludeEmpty		:: Bool,				-- ^ Whether empty directories or files should be included in any solution.
-	getMaximumBytes		:: Data.File.FileSize,			-- ^ The maximum space (in bytes) available in which to store a subset of the specified files.
-	getMaybeRandomSeed	:: Maybe Int,				-- ^ Optionally seed the random-number generator to produce a repeatable pseudo-random sequence.
-	getMinimumUsageRatio	:: ratio,				-- ^ The minimum acceptable usage-ratio of 'getMaximumBytes'.
-	getVerbosity		:: Distribution.Verbosity.Verbosity	-- ^ Set the threshold for ancillary information-output.
+	getIncludeEmpty		:: Bool,			-- ^ Whether empty directories or files should be included in any solution.
+	getMaximumBytes		:: Data.File.FileSize,		-- ^ The maximum space (in bytes) available in which to store a subset of the specified files.
+	getMaybeRandomSeed	:: Maybe Int,			-- ^ Optionally seed the random-number generator to produce a repeatable pseudo-random sequence.
+	getMinimumUsageRatio	:: ratio,			-- ^ The minimum acceptable usage-ratio of 'getMaximumBytes'.
+	getVerbosity		:: Data.Verbosity.Verbosity	-- ^ Set the threshold for ancillary information-output.
 } deriving (Eq, Show)
 
 instance Fractional f => Data.Default.Default (CommandOptions f)	where
@@ -67,7 +67,7 @@
 		getMaximumBytes		= 4700000000,	-- DVD-size; just under 4.4GiB.
 		getMaybeRandomSeed	= Nothing,
 		getMinimumUsageRatio	= 9 / 10,	-- 90% full.
-		getVerbosity		= Distribution.Verbosity.normal
+		getVerbosity		= Data.Default.def
 	}
 
 instance Real ratio => ToolShed.SelfValidate.SelfValidator (CommandOptions ratio)	where
@@ -84,7 +84,7 @@
 	-> Data.File.FileSize
 	-> Maybe Int
 	-> ratio
-	-> Distribution.Verbosity.Verbosity
+	-> Data.Verbosity.Verbosity
 	-> CommandOptions ratio
 mkCommandOptions includeEmpty maximumBytes maybeRandomSeed minimumUsageRatio verbosity
 	| ToolShed.SelfValidate.isValid commandOptions	= commandOptions
diff --git a/src-lib/Squeeze/Data/Verbosity.hs b/src-lib/Squeeze/Data/Verbosity.hs
new file mode 100644
--- /dev/null
+++ b/src-lib/Squeeze/Data/Verbosity.hs
@@ -0,0 +1,55 @@
+{-
+	Copyright (C) 2018 Dr. Alistair Ward
+
+	This file is part of Squeeze.
+
+	Squeeze is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	Squeeze is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with Squeeze.  If not, see <http://www.gnu.org/licenses/>.
+-}
+{- |
+ [@AUTHOR@]	Dr. Alistair Ward
+
+ [@DESCRIPTION@]
+	The levels of program-output.
+	N.B.: the data-type is coincidentally similar to 'Distribution.Verbosity.Internal.VerbosityLevel'.
+-}
+
+module Squeeze.Data.Verbosity(
+-- * Types
+-- ** Data-types
+	Verbosity(),
+-- * Constants
+	range
+) where
+
+import qualified	Data.Default
+
+-- | Define the levels of program-output.
+data Verbosity
+	= Silent
+	| Normal
+	| Verbose
+	| Deafening
+	deriving (Enum, Eq, Ord, Read, Show)
+
+instance Bounded Verbosity where
+	minBound	= Silent
+	maxBound	= Deafening
+
+instance Data.Default.Default Verbosity where
+	def	= Normal
+
+-- | The constant complete range of values.
+range :: [Verbosity]
+range	= [minBound .. maxBound]
+
diff --git a/src-test/Squeeze/Test/QuickCheck/Data/Verbosity.hs b/src-test/Squeeze/Test/QuickCheck/Data/Verbosity.hs
--- a/src-test/Squeeze/Test/QuickCheck/Data/Verbosity.hs
+++ b/src-test/Squeeze/Test/QuickCheck/Data/Verbosity.hs
@@ -18,13 +18,13 @@
 {- |
  [@AUTHOR@]	Dr. Alistair Ward
 
- [@DESCRIPTION@]	Implements 'Test.QuickCheck.Arbitrary' for 'Distribution.Verbosity.Verbosity'.
+ [@DESCRIPTION@]	Implements 'Test.QuickCheck.Arbitrary'.
 -}
 
 module Squeeze.Test.QuickCheck.Data.Verbosity() where
 
-import qualified	Distribution.Verbosity
+import qualified	Squeeze.Data.Verbosity	as Data.Verbosity
 import qualified	Test.QuickCheck
 
-instance Test.QuickCheck.Arbitrary Distribution.Verbosity.Verbosity	where
-	arbitrary	= Test.QuickCheck.elements [minBound .. maxBound]
+instance Test.QuickCheck.Arbitrary Data.Verbosity.Verbosity	where
+	arbitrary	= Test.QuickCheck.elements Data.Verbosity.range
