| ObjectiveC | Distribution.Simple.CCompiler |
| ObjectiveCPlusPlus | Distribution.Simple.CCompiler |
| objExtension | Distribution.Simple.BuildPaths |
| odd | Distribution.Compat.Prelude.Internal |
| oldExtensions | Distribution.Types.BuildInfo, Distribution.PackageDescription |
| OneComponentRequestedSpec | Distribution.Types.ComponentRequestedSpec |
| OpenBSD | Distribution.System |
| OpenModule | |
| 1 (Type/Class) | Distribution.Backpack |
| 2 (Data Constructor) | Distribution.Backpack |
| openModuleFreeHoles | Distribution.Backpack |
| OpenModuleSubst | Distribution.Backpack |
| openModuleSubstFreeHoles | Distribution.Backpack |
| OpenModuleVar | Distribution.Backpack |
| OpenUnitId | Distribution.Backpack |
| openUnitIdFreeHoles | Distribution.Backpack |
| OptArg | Distribution.Simple.Command |
| optArg | Distribution.Simple.Command |
| optArg' | Distribution.Simple.Command |
| OptDescr | Distribution.Simple.Command |
| OptFlags | Distribution.Simple.Command |
| OptimisationLevel | Distribution.Simple.Compiler, Distribution.Simple |
| option | |
| 1 (Function) | Distribution.Compat.ReadP |
| 2 (Function) | Distribution.Simple.Command |
| optional | Distribution.Compat.ReadP |
| OptionBool | Distribution.TestSuite |
| optionDefault | Distribution.TestSuite |
| OptionDescr | |
| 1 (Type/Class) | Distribution.TestSuite |
| 2 (Data Constructor) | Distribution.TestSuite |
| optionDescr | Distribution.Simple.Command |
| optionDescription | Distribution.TestSuite |
| optionDistPref | Distribution.Simple.Setup |
| OptionEnum | Distribution.TestSuite |
| OptionField | |
| 1 (Type/Class) | Distribution.Simple.Command |
| 2 (Data Constructor) | Distribution.Simple.Command |
| OptionFile | Distribution.TestSuite |
| optionFileExtensions | Distribution.TestSuite |
| optionFileIsDir | Distribution.TestSuite |
| optionFileMustExist | Distribution.TestSuite |
| optionName | |
| 1 (Function) | Distribution.TestSuite |
| 2 (Function) | Distribution.Simple.Command |
| OptionNumber | Distribution.TestSuite |
| optionNumberBounds | Distribution.TestSuite |
| optionNumberIsInt | Distribution.TestSuite |
| optionNumJobs | Distribution.Simple.Setup |
| OptionRngSeed | Distribution.TestSuite |
| Options | Distribution.TestSuite |
| options | |
| 1 (Function) | Distribution.TestSuite |
| 2 (Function) | Distribution.Types.BuildInfo, Distribution.PackageDescription |
| OptionSet | Distribution.TestSuite |
| OptionString | Distribution.TestSuite |
| optionStringMultiline | Distribution.TestSuite |
| OptionType | Distribution.TestSuite |
| optionType | Distribution.TestSuite |
| optionVerbosity | Distribution.Simple.Setup |
| optKeepTempFiles | Distribution.Simple.Utils |
| or | Distribution.Compat.Prelude.Internal |
| Ord | Distribution.Compat.Prelude.Internal |
| ord | Distribution.Compat.Prelude.Internal |
| Ordering | Distribution.Compat.Prelude.Internal |
| ordNub | Distribution.Utils.Generic, Distribution.Simple.Utils |
| ordNubBy | Distribution.Utils.Generic, Distribution.Simple.Utils |
| ordNubRight | Distribution.Utils.Generic, Distribution.Simple.Utils |
| orEarlierVersion | Distribution.Version, Distribution.Simple |
| orLaterVersion | Distribution.Version, Distribution.Simple |
| OS | |
| 1 (Type/Class) | Distribution.System |
| 2 (Data Constructor) | Distribution.Types.GenericPackageDescription, Distribution.PackageDescription |
| OSVar | Distribution.Simple.InstallDirs, Distribution.Simple.LocalBuildInfo |
| OSX | Distribution.System |
| OtherArch | Distribution.System |
| OtherCompiler | Distribution.Compiler, Distribution.Simple.Compiler, Distribution.Simple |
| otherExtensions | Distribution.Types.BuildInfo, Distribution.PackageDescription |
| otherLanguages | Distribution.Types.BuildInfo, Distribution.PackageDescription |
| OtherLicense | Distribution.License, Distribution.Make, Distribution.Simple |
| otherModules | Distribution.Types.BuildInfo, Distribution.PackageDescription |
| OtherOS | Distribution.System |
| OtherRepoType | Distribution.Types.SourceRepo, Distribution.PackageDescription |
| otherwise | Distribution.Compat.Prelude.Internal |
| OverlappingInstances | Language.Haskell.Extension, Distribution.Simple |
| OverloadedLabels | Language.Haskell.Extension, Distribution.Simple |
| OverloadedLists | Language.Haskell.Extension, Distribution.Simple |
| OverloadedStrings | Language.Haskell.Extension, Distribution.Simple |
| overNubList | Distribution.Utils.NubList |
| overNubListR | Distribution.Utils.NubList |