| W3C | Distribution.SPDX.LicenseId, Distribution.SPDX | 
| W3C_19980720 | Distribution.SPDX.LicenseId, Distribution.SPDX | 
| W3C_20150513 | Distribution.SPDX.LicenseId, Distribution.SPDX | 
| warnings | Distribution.Fields.LexerMonad | 
| Wasi | Distribution.System | 
| Wasm32 | Distribution.System | 
| Watcom_1_0 | Distribution.SPDX.LicenseId, Distribution.SPDX | 
| when | Distribution.Compat.Prelude | 
| wildcardUpperBound | Distribution.Types.VersionRange.Internal, Distribution.Types.VersionRange, Distribution.Version | 
| Windows | Distribution.System | 
| withBenchmark | Distribution.Types.PackageDescription, Distribution.PackageDescription | 
| withExe | Distribution.Types.PackageDescription, Distribution.PackageDescription | 
| withFileContents | Distribution.Utils.Generic | 
| withForeignLib | Distribution.Types.PackageDescription, Distribution.PackageDescription | 
| withinIntervals | Distribution.Types.VersionInterval.Legacy | 
| withinPkgconfigVersionRange | Distribution.Types.PkgconfigVersionRange, Distribution.PackageDescription | 
| withinRange | Distribution.Types.VersionRange, Distribution.Version | 
| withinVersion | Distribution.Types.VersionRange.Internal, Distribution.Types.VersionRange, Distribution.Version | 
| withLib | Distribution.Types.PackageDescription, Distribution.PackageDescription | 
| withoutWarnings | Distribution.Fields.ParseResult | 
| withTest | Distribution.Types.PackageDescription, Distribution.PackageDescription | 
| withUTF8FileContents | Distribution.Utils.Generic | 
| Word | Distribution.Compat.Binary, Distribution.Compat.Prelude | 
| Word16 | Distribution.Compat.Binary, Distribution.Compat.Prelude | 
| Word32 | Distribution.Compat.Binary, Distribution.Compat.Prelude | 
| Word64 | Distribution.Compat.Binary, Distribution.Compat.Prelude | 
| Word8 | Distribution.Compat.Binary, Distribution.Compat.Prelude | 
| words | Distribution.Compat.Prelude | 
| wrapLine | Distribution.Utils.Generic | 
| wrapText | Distribution.Utils.Generic | 
| writeFile | Distribution.Compat.Prelude | 
| writeFileAtomic | Distribution.Utils.Generic | 
| writeGenericPackageDescription | Distribution.PackageDescription.PrettyPrint | 
| writeHookedBuildInfo | Distribution.PackageDescription.PrettyPrint | 
| writePackageDescription | Distribution.PackageDescription.PrettyPrint | 
| writeUTF8File | Distribution.Utils.Generic | 
| Wsuipa | Distribution.SPDX.LicenseId, Distribution.SPDX | 
| WTFPL | Distribution.SPDX.LicenseId, Distribution.SPDX | 
| WxWindows_exception_3_1 | Distribution.SPDX.LicenseExceptionId, Distribution.SPDX |