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>Distribution.Simple.Utils</TITLE
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>Cabal-1.6.0.3: A framework for packaging Haskell software</TD
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>Contents</A
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>Distribution.Simple.Utils</FONT
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><TD ALIGN="right"
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><TR
><TD CLASS="infohead"
>Portability</TD
><TD CLASS="infoval"
>portable</TD
></TR
><TR
><TD CLASS="infohead"
>Maintainer</TD
><TD CLASS="infoval"
>cabal-devel@haskell.org</TD
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><TD CLASS="section4"
><B
>Contents</B
></TD
></TR
><TR
><TD
><DL
><DT
><A HREF="#1"
>logging and errors
</A
></DT
><DT
><A HREF="#2"
>running programs
</A
></DT
><DT
><A HREF="#3"
>copying files
</A
></DT
><DT
><A HREF="#4"
>file names
</A
></DT
><DT
><A HREF="#5"
>finding files
</A
></DT
><DT
><A HREF="#6"
>simple file globbing
</A
></DT
><DT
><A HREF="#7"
>temp files and dirs
</A
></DT
><DT
><A HREF="#8"
>.cabal and .buildinfo files
</A
></DT
><DT
><A HREF="#9"
>reading and writing files safely
</A
></DT
><DT
><A HREF="#10"
>Unicode
</A
></DT
><DT
><A HREF="#11"
>generic utils
</A
></DT
></DL
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
>Description</TD
></TR
><TR
><TD CLASS="doc"
>A large and somewhat miscellaneous collection of utility functions used
 throughout the rest of the Cabal lib and in other tools that use the Cabal
 lib like <TT
>cabal-install</TT
>. It has a very simple set of logging actions. It
 has low level functions for running programs, a bunch of wrappers for
 various directory and file functions that do extra logging.
</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
>Synopsis</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="body"
><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="decl"
><A HREF="#v%3AcabalVersion"
>cabalVersion</A
> :: <A HREF="../base/Data-Version.html#t%3AVersion"
>Version</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AcabalBootstrapping"
>cabalBootstrapping</A
> :: <A HREF="../ghc-prim/GHC-Bool.html#t%3ABool"
>Bool</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3Adie"
>die</A
> ::  <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> a</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AdieWithLocation"
>dieWithLocation</A
> ::  <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/Data-Maybe.html#t%3AMaybe"
>Maybe</A
> <A HREF="../ghc-prim/GHC-Types.html#t%3AInt"
>Int</A
> -&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> a</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3Awarn"
>warn</A
> :: <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
> -&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3Anotice"
>notice</A
> :: <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
> -&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsetupMessage"
>setupMessage</A
> :: <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
> -&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="Distribution-Package.html#t%3APackageIdentifier"
>PackageIdentifier</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3Ainfo"
>info</A
> :: <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
> -&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3Adebug"
>debug</A
> :: <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
> -&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AchattyTry"
>chattyTry</A
> :: <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3ArawSystemExit"
>rawSystemExit</A
> :: <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
> -&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; [<A HREF="../base/Data-Char.html#t%3AString"
>String</A
>] -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3ArawSystemStdout"
>rawSystemStdout</A
> :: <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
> -&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; [<A HREF="../base/Data-Char.html#t%3AString"
>String</A
>] -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../base/Data-Char.html#t%3AString"
>String</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3ArawSystemStdout%27"
>rawSystemStdout'</A
> :: <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
> -&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; [<A HREF="../base/Data-Char.html#t%3AString"
>String</A
>] -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> (<A HREF="../base/Data-Char.html#t%3AString"
>String</A
>, <A HREF="../base/System-Exit.html#t%3AExitCode"
>ExitCode</A
>)</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AmaybeExit"
>maybeExit</A
> :: <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../base/System-Exit.html#t%3AExitCode"
>ExitCode</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3Axargs"
>xargs</A
> :: <A HREF="../ghc-prim/GHC-Types.html#t%3AInt"
>Int</A
> -&gt; ([<A HREF="../base/Data-Char.html#t%3AString"
>String</A
>] -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
>) -&gt; [<A HREF="../base/Data-Char.html#t%3AString"
>String</A
>] -&gt; [<A HREF="../base/Data-Char.html#t%3AString"
>String</A
>] -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AsmartCopySources"
>smartCopySources</A
> :: <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
> -&gt; [<A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
>] -&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; [<A HREF="Distribution-ModuleName.html#t%3AModuleName"
>ModuleName</A
>] -&gt; [<A HREF="../base/Data-Char.html#t%3AString"
>String</A
>] -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AcreateDirectoryIfMissingVerbose"
>createDirectoryIfMissingVerbose</A
> :: <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
> -&gt; <A HREF="../ghc-prim/GHC-Bool.html#t%3ABool"
>Bool</A
> -&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AcopyFileVerbose"
>copyFileVerbose</A
> :: <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
> -&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AcopyDirectoryRecursiveVerbose"
>copyDirectoryRecursiveVerbose</A
> :: <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
> -&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AcopyFiles"
>copyFiles</A
> :: <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
> -&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; [(<A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
>, <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
>)] -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AcurrentDir"
>currentDir</A
> :: <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AfindFile"
>findFile</A
> :: [<A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
>] -&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AfindFileWithExtension"
>findFileWithExtension</A
> :: [<A HREF="../base/Data-Char.html#t%3AString"
>String</A
>] -&gt; [<A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
>] -&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> (<A HREF="../base/Data-Maybe.html#t%3AMaybe"
>Maybe</A
> <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
>)</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AfindFileWithExtension%27"
>findFileWithExtension'</A
> :: [<A HREF="../base/Data-Char.html#t%3AString"
>String</A
>] -&gt; [<A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
>] -&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> (<A HREF="../base/Data-Maybe.html#t%3AMaybe"
>Maybe</A
> (<A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
>, <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
>))</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AmatchFileGlob"
>matchFileGlob</A
> :: <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> [<A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
>]</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AmatchDirFileGlob"
>matchDirFileGlob</A
> :: <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> [<A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
>]</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AwithTempFile"
>withTempFile</A
> ::  <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; (<A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/System-IO.html#t%3AHandle"
>Handle</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> a) -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> a</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AwithTempDirectory"
>withTempDirectory</A
> ::  <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
> -&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> a -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> a</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AdefaultPackageDesc"
>defaultPackageDesc</A
> :: <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AfindPackageDesc"
>findPackageDesc</A
> :: <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AdefaultHookedPackageDesc"
>defaultHookedPackageDesc</A
> :: <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> (<A HREF="../base/Data-Maybe.html#t%3AMaybe"
>Maybe</A
> <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
>)</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AfindHookedPackageDesc"
>findHookedPackageDesc</A
> :: <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> (<A HREF="../base/Data-Maybe.html#t%3AMaybe"
>Maybe</A
> <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
>)</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AwithFileContents"
>withFileContents</A
> ::  <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; (<A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> a) -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> a</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AwriteFileAtomic"
>writeFileAtomic</A
> :: <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3ArewriteFile"
>rewriteFile</A
> :: <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AfromUTF8"
>fromUTF8</A
> :: <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AtoUTF8"
>toUTF8</A
> :: <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AreadUTF8File"
>readUTF8File</A
> :: <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../base/Data-Char.html#t%3AString"
>String</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AwithUTF8FileContents"
>withUTF8FileContents</A
> ::  <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; (<A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> a) -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> a</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AwriteUTF8File"
>writeUTF8File</A
> :: <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3Aequating"
>equating</A
> :: <A HREF="../base/Data-Eq.html#t%3AEq"
>Eq</A
> a =&gt; (b -&gt; a) -&gt; b -&gt; b -&gt; <A HREF="../ghc-prim/GHC-Bool.html#t%3ABool"
>Bool</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3Acomparing"
>comparing</A
> :: <A HREF="../base/Data-Ord.html#t%3AOrd"
>Ord</A
> a =&gt; (b -&gt; a) -&gt; b -&gt; b -&gt; <A HREF="../ghc-prim/GHC-Ordering.html#t%3AOrdering"
>Ordering</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AisInfixOf"
>isInfixOf</A
> :: <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../ghc-prim/GHC-Bool.html#t%3ABool"
>Bool</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3Aintercalate"
>intercalate</A
> ::  [a] -&gt; [[a]] -&gt; [a]</TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3Alowercase"
>lowercase</A
> :: <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AwrapText"
>wrapText</A
> :: <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
></TD
></TR
><TR
><TD CLASS="s8"
></TD
></TR
><TR
><TD CLASS="decl"
><A HREF="#v%3AwrapLine"
>wrapLine</A
> :: <A HREF="../ghc-prim/GHC-Types.html#t%3AInt"
>Int</A
> -&gt; [<A HREF="../base/Data-Char.html#t%3AString"
>String</A
>] -&gt; [[<A HREF="../base/Data-Char.html#t%3AString"
>String</A
>]]</TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
>Documentation</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:cabalVersion"
><A NAME="v%3AcabalVersion"
></A
></A
><B
>cabalVersion</B
> :: <A HREF="../base/Data-Version.html#t%3AVersion"
>Version</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:cabalBootstrapping"
><A NAME="v%3AcabalBootstrapping"
></A
></A
><B
>cabalBootstrapping</B
> :: <A HREF="../ghc-prim/GHC-Bool.html#t%3ABool"
>Bool</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
><A NAME="1"
><A NAME="1"
>logging and errors
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:die"
><A NAME="v%3Adie"
></A
></A
><B
>die</B
> ::  <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> a</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:dieWithLocation"
><A NAME="v%3AdieWithLocation"
></A
></A
><B
>dieWithLocation</B
> ::  <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/Data-Maybe.html#t%3AMaybe"
>Maybe</A
> <A HREF="../ghc-prim/GHC-Types.html#t%3AInt"
>Int</A
> -&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> a</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:warn"
><A NAME="v%3Awarn"
></A
></A
><B
>warn</B
> :: <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
> -&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="doc"
><P
>Non fatal conditions that may be indicative of an error or problem.
</P
><P
>We display these at the <TT
><A HREF="Distribution-Verbosity.html#v%3Anormal"
>normal</A
></TT
> verbosity level.
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:notice"
><A NAME="v%3Anotice"
></A
></A
><B
>notice</B
> :: <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
> -&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="doc"
><P
>Useful status messages.
</P
><P
>We display these at the <TT
><A HREF="Distribution-Verbosity.html#v%3Anormal"
>normal</A
></TT
> verbosity level.
</P
><P
>This is for the ordinary helpful status messages that users see. Just
 enough information to know that things are working but not floods of detail.
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:setupMessage"
><A NAME="v%3AsetupMessage"
></A
></A
><B
>setupMessage</B
> :: <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
> -&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="Distribution-Package.html#t%3APackageIdentifier"
>PackageIdentifier</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:info"
><A NAME="v%3Ainfo"
></A
></A
><B
>info</B
> :: <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
> -&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="doc"
><P
>More detail on the operation of some action.
</P
><P
>We display these messages when the verbosity level is <TT
><A HREF="Distribution-Verbosity.html#v%3Averbose"
>verbose</A
></TT
>
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:debug"
><A NAME="v%3Adebug"
></A
></A
><B
>debug</B
> :: <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
> -&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="doc"
><P
>Detailed internal debugging information
</P
><P
>We display these messages when the verbosity level is <TT
><A HREF="Distribution-Verbosity.html#v%3Adeafening"
>deafening</A
></TT
>
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:chattyTry"
><A NAME="v%3AchattyTry"
></A
></A
><B
>chattyTry</B
></TD
></TR
><TR
><TD CLASS="body"
><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="arg"
>:: <A HREF="../base/Data-Char.html#t%3AString"
>String</A
></TD
><TD CLASS="rdoc"
>a description of the action we were attempting
</TD
></TR
><TR
><TD CLASS="arg"
>-&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
><TD CLASS="rdoc"
>the action itself
</TD
></TR
><TR
><TD CLASS="arg"
>-&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
><TD CLASS="rdoc"
></TD
></TR
><TR
><TD CLASS="ndoc" COLSPAN="2"
>Perform an IO action, catching any IO exceptions and printing an error
   if one occurs.
</TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
><A NAME="2"
><A NAME="2"
>running programs
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:rawSystemExit"
><A NAME="v%3ArawSystemExit"
></A
></A
><B
>rawSystemExit</B
> :: <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
> -&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; [<A HREF="../base/Data-Char.html#t%3AString"
>String</A
>] -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:rawSystemStdout"
><A NAME="v%3ArawSystemStdout"
></A
></A
><B
>rawSystemStdout</B
> :: <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
> -&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; [<A HREF="../base/Data-Char.html#t%3AString"
>String</A
>] -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../base/Data-Char.html#t%3AString"
>String</A
></TD
></TR
><TR
><TD CLASS="doc"
><P
>Run a command and return its output.
</P
><P
>The output is assumed to be encoded as UTF8.
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:rawSystemStdout'"
><A NAME="v%3ArawSystemStdout%27"
></A
></A
><B
>rawSystemStdout'</B
> :: <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
> -&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; [<A HREF="../base/Data-Char.html#t%3AString"
>String</A
>] -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> (<A HREF="../base/Data-Char.html#t%3AString"
>String</A
>, <A HREF="../base/System-Exit.html#t%3AExitCode"
>ExitCode</A
>)</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:maybeExit"
><A NAME="v%3AmaybeExit"
></A
></A
><B
>maybeExit</B
> :: <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../base/System-Exit.html#t%3AExitCode"
>ExitCode</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:xargs"
><A NAME="v%3Axargs"
></A
></A
><B
>xargs</B
> :: <A HREF="../ghc-prim/GHC-Types.html#t%3AInt"
>Int</A
> -&gt; ([<A HREF="../base/Data-Char.html#t%3AString"
>String</A
>] -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
>) -&gt; [<A HREF="../base/Data-Char.html#t%3AString"
>String</A
>] -&gt; [<A HREF="../base/Data-Char.html#t%3AString"
>String</A
>] -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="doc"
><P
>Like the unix xargs program. Useful for when we've got very long command
 lines that might overflow an OS limit on command line length and so you
 need to invoke a command multiple times to get all the args in.
</P
><P
>Use it with either of the rawSystem variants above. For example:
</P
><PRE
> xargs (32*1024) (rawSystemExit verbosity) prog fixedArgs bigArgs
</PRE
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
><A NAME="3"
><A NAME="3"
>copying files
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:smartCopySources"
><A NAME="v%3AsmartCopySources"
></A
></A
><B
>smartCopySources</B
></TD
></TR
><TR
><TD CLASS="body"
><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="arg"
>:: <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
></TD
><TD CLASS="rdoc"
>verbosity
</TD
></TR
><TR
><TD CLASS="arg"
>-&gt; [<A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
>]</TD
><TD CLASS="rdoc"
>build prefix (location of objects)
</TD
></TR
><TR
><TD CLASS="arg"
>-&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
></TD
><TD CLASS="rdoc"
>Target directory
</TD
></TR
><TR
><TD CLASS="arg"
>-&gt; [<A HREF="Distribution-ModuleName.html#t%3AModuleName"
>ModuleName</A
>]</TD
><TD CLASS="rdoc"
>Modules
</TD
></TR
><TR
><TD CLASS="arg"
>-&gt; [<A HREF="../base/Data-Char.html#t%3AString"
>String</A
>]</TD
><TD CLASS="rdoc"
>search suffixes
</TD
></TR
><TR
><TD CLASS="arg"
>-&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
><TD CLASS="rdoc"
></TD
></TR
><TR
><TD CLASS="ndoc" COLSPAN="2"
>Copy the source files into the right directory.  Looks in the
 build prefix for files that look like the input modules, based on
 the input search suffixes.  It copies the files into the target
 directory.
</TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:createDirectoryIfMissingVerbose"
><A NAME="v%3AcreateDirectoryIfMissingVerbose"
></A
></A
><B
>createDirectoryIfMissingVerbose</B
> :: <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
> -&gt; <A HREF="../ghc-prim/GHC-Bool.html#t%3ABool"
>Bool</A
> -&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:copyFileVerbose"
><A NAME="v%3AcopyFileVerbose"
></A
></A
><B
>copyFileVerbose</B
> :: <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
> -&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:copyDirectoryRecursiveVerbose"
><A NAME="v%3AcopyDirectoryRecursiveVerbose"
></A
></A
><B
>copyDirectoryRecursiveVerbose</B
> :: <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
> -&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:copyFiles"
><A NAME="v%3AcopyFiles"
></A
></A
><B
>copyFiles</B
> :: <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
> -&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; [(<A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
>, <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
>)] -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="doc"
><P
>Copies a bunch of files to a target directory, preserving the directory
 structure in the target location. The target directories are created if they
 do not exist.
</P
><P
>The files are identified by a pair of base directory and a path relative to
 that base. It is only the relative part that is preserved in the
 destination.
</P
><P
>For example:
</P
><PRE
> copyFiles normal &quot;dist/src&quot;
    [(&quot;&quot;, &quot;src/Foo.hs&quot;), (&quot;dist/build/&quot;, &quot;src/Bar.hs&quot;)]
</PRE
><P
>This would copy &quot;src/Foo.hs&quot; to &quot;dist/src/src/Foo.hs&quot; and
 copy &quot;dist/build/src/Bar.hs&quot; to &quot;dist/src/src/Bar.hs&quot;.
</P
><P
>This operation is not atomic. Any IO failure during the copy (including any
 missing source files) leaves the target in an unknown state so it is best to
 use it with a freshly created directory so that it can be simply deleted if
 anything goes wrong.
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
><A NAME="4"
><A NAME="4"
>file names
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:currentDir"
><A NAME="v%3AcurrentDir"
></A
></A
><B
>currentDir</B
> :: <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
></TD
></TR
><TR
><TD CLASS="doc"
>The path name that represents the current directory.
 In Unix, it's <TT
>&quot;.&quot;</TT
>, but this is system-specific.
 (E.g. AmigaOS uses the empty string <TT
>&quot;&quot;</TT
> for the current directory.)
</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
><A NAME="5"
><A NAME="5"
>finding files
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:findFile"
><A NAME="v%3AfindFile"
></A
></A
><B
>findFile</B
></TD
></TR
><TR
><TD CLASS="body"
><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="arg"
>:: [<A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
>]</TD
><TD CLASS="rdoc"
>search locations
</TD
></TR
><TR
><TD CLASS="arg"
>-&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
></TD
><TD CLASS="rdoc"
>File Name
</TD
></TR
><TR
><TD CLASS="arg"
>-&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
></TD
><TD CLASS="rdoc"
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:findFileWithExtension"
><A NAME="v%3AfindFileWithExtension"
></A
></A
><B
>findFileWithExtension</B
> :: [<A HREF="../base/Data-Char.html#t%3AString"
>String</A
>] -&gt; [<A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
>] -&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> (<A HREF="../base/Data-Maybe.html#t%3AMaybe"
>Maybe</A
> <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
>)</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:findFileWithExtension'"
><A NAME="v%3AfindFileWithExtension%27"
></A
></A
><B
>findFileWithExtension'</B
> :: [<A HREF="../base/Data-Char.html#t%3AString"
>String</A
>] -&gt; [<A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
>] -&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> (<A HREF="../base/Data-Maybe.html#t%3AMaybe"
>Maybe</A
> (<A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
>, <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
>))</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
><A NAME="6"
><A NAME="6"
>simple file globbing
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:matchFileGlob"
><A NAME="v%3AmatchFileGlob"
></A
></A
><B
>matchFileGlob</B
> :: <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> [<A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
>]</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:matchDirFileGlob"
><A NAME="v%3AmatchDirFileGlob"
></A
></A
><B
>matchDirFileGlob</B
> :: <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> [<A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
>]</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
><A NAME="7"
><A NAME="7"
>temp files and dirs
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:withTempFile"
><A NAME="v%3AwithTempFile"
></A
></A
><B
>withTempFile</B
></TD
></TR
><TR
><TD CLASS="body"
><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="arg"
>:: </TD
><TD CLASS="rdoc"
></TD
></TR
><TR
><TD CLASS="arg"
>=&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
></TD
><TD CLASS="rdoc"
>Temp dir to create the file in
</TD
></TR
><TR
><TD CLASS="arg"
>-&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
></TD
><TD CLASS="rdoc"
>File name template. See <TT
><A HREF="../base/System-IO.html#v%3AopenTempFile"
>openTempFile</A
></TT
>.
</TD
></TR
><TR
><TD CLASS="arg"
>-&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/System-IO.html#t%3AHandle"
>Handle</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> a</TD
><TD CLASS="rdoc"
></TD
></TR
><TR
><TD CLASS="arg"
>-&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> a</TD
><TD CLASS="rdoc"
></TD
></TR
><TR
><TD CLASS="ndoc" COLSPAN="2"
>Use a temporary filename that doesn't already exist.
</TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:withTempDirectory"
><A NAME="v%3AwithTempDirectory"
></A
></A
><B
>withTempDirectory</B
> ::  <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
> -&gt; <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> a -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> a</TD
></TR
><TR
><TD CLASS="doc"
><P
>Use a temporary directory.
</P
><P
>Use this exact given dir which must not already exist.
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
><A NAME="8"
><A NAME="8"
>.cabal and .buildinfo files
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:defaultPackageDesc"
><A NAME="v%3AdefaultPackageDesc"
></A
></A
><B
>defaultPackageDesc</B
> :: <A HREF="Distribution-Verbosity.html#t%3AVerbosity"
>Verbosity</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
></TD
></TR
><TR
><TD CLASS="doc"
>Package description file (<EM
>pkgname</EM
><TT
>.cabal</TT
>)
</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:findPackageDesc"
><A NAME="v%3AfindPackageDesc"
></A
></A
><B
>findPackageDesc</B
></TD
></TR
><TR
><TD CLASS="body"
><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="arg"
>:: <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
></TD
><TD CLASS="rdoc"
>Where to look
</TD
></TR
><TR
><TD CLASS="arg"
>-&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
></TD
><TD CLASS="rdoc"
><A HREF="pkgname"
>pkgname</A
>.cabal
</TD
></TR
><TR
><TD CLASS="ndoc" COLSPAN="2"
>Find a package description file in the given directory.  Looks for
 <TT
>.cabal</TT
> files.
</TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:defaultHookedPackageDesc"
><A NAME="v%3AdefaultHookedPackageDesc"
></A
></A
><B
>defaultHookedPackageDesc</B
> :: <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> (<A HREF="../base/Data-Maybe.html#t%3AMaybe"
>Maybe</A
> <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
>)</TD
></TR
><TR
><TD CLASS="doc"
>Optional auxiliary package information file (<EM
>pkgname</EM
><TT
>.buildinfo</TT
>)
</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:findHookedPackageDesc"
><A NAME="v%3AfindHookedPackageDesc"
></A
></A
><B
>findHookedPackageDesc</B
></TD
></TR
><TR
><TD CLASS="body"
><TABLE CLASS="vanilla" CELLSPACING="0" CELLPADDING="0"
><TR
><TD CLASS="arg"
>:: <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
></TD
><TD CLASS="rdoc"
>Directory to search
</TD
></TR
><TR
><TD CLASS="arg"
>-&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> (<A HREF="../base/Data-Maybe.html#t%3AMaybe"
>Maybe</A
> <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
>)</TD
><TD CLASS="rdoc"
><EM
>dir</EM
><TT
>/</TT
><EM
>pkgname</EM
><TT
>.buildinfo</TT
>, if present
</TD
></TR
><TR
><TD CLASS="ndoc" COLSPAN="2"
>Find auxiliary package information in the given directory.
 Looks for <TT
>.buildinfo</TT
> files.
</TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
><A NAME="9"
><A NAME="9"
>reading and writing files safely
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:withFileContents"
><A NAME="v%3AwithFileContents"
></A
></A
><B
>withFileContents</B
> ::  <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; (<A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> a) -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> a</TD
></TR
><TR
><TD CLASS="doc"
><P
>Gets the contents of a file, but guarantee that it gets closed.
</P
><P
>The file is read lazily but if it is not fully consumed by the action then
 the remaining input is truncated and the file is closed.
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:writeFileAtomic"
><A NAME="v%3AwriteFileAtomic"
></A
></A
><B
>writeFileAtomic</B
> :: <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="doc"
><P
>Writes a file atomically.
</P
><P
>The file is either written sucessfully or an IO exception is raised and
 the original file is left unchanged.
</P
><UL
><LI
> Warning: On Windows this operation is very nearly but not quite atomic.
   See below.
</LI
></UL
><P
>On Posix it works by writing a temporary file and atomically renaming over
 the top any pre-existing target file with the temporary one.
</P
><P
>On Windows it is not possible to rename over an existing file so the target
 file has to be deleted before the temporary file is renamed to the target.
 Therefore there is a race condition between the existing file being removed
 and the temporary file being renamed. Another thread could write to the
 target or change the permission on the target directory between the deleting
 and renaming steps. An exception would be raised but the target file would
 either no longer exist or have the content as written by the other thread.
</P
><P
>On windows it is not possible to delete a file that is open by a process.
 This case will give an IO exception but the atomic property is not affected.
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:rewriteFile"
><A NAME="v%3ArewriteFile"
></A
></A
><B
>rewriteFile</B
> :: <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="doc"
>Write a file but only if it would have new content. If we would be writing
 the same as the existing content then leave the file as is so that we do not
 update the file's modification time.
</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
><A NAME="10"
><A NAME="10"
>Unicode
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:fromUTF8"
><A NAME="v%3AfromUTF8"
></A
></A
><B
>fromUTF8</B
> :: <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:toUTF8"
><A NAME="v%3AtoUTF8"
></A
></A
><B
>toUTF8</B
> :: <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:readUTF8File"
><A NAME="v%3AreadUTF8File"
></A
></A
><B
>readUTF8File</B
> :: <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../base/Data-Char.html#t%3AString"
>String</A
></TD
></TR
><TR
><TD CLASS="doc"
><P
>Reads a UTF8 encoded text file as a Unicode String
</P
><P
>Reads lazily using ordinary <TT
><A HREF="../base/System-IO.html#v%3AreadFile"
>readFile</A
></TT
>.
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:withUTF8FileContents"
><A NAME="v%3AwithUTF8FileContents"
></A
></A
><B
>withUTF8FileContents</B
> ::  <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; (<A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> a) -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> a</TD
></TR
><TR
><TD CLASS="doc"
><P
>Reads a UTF8 encoded text file as a Unicode String
</P
><P
>Same behaviour as <TT
><A HREF="Distribution-Simple-Utils.html#v%3AwithFileContents"
>withFileContents</A
></TT
>.
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:writeUTF8File"
><A NAME="v%3AwriteUTF8File"
></A
></A
><B
>writeUTF8File</B
> :: <A HREF="../base/System-IO.html#t%3AFilePath"
>FilePath</A
> -&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/System-IO.html#t%3AIO"
>IO</A
> <A HREF="../ghc-prim/GHC-Unit.html#t%3A%28%29"
>()</A
></TD
></TR
><TR
><TD CLASS="doc"
><P
>Writes a Unicode String as a UTF8 encoded text file.
</P
><P
>Uses <TT
><A HREF="Distribution-Simple-Utils.html#v%3AwriteFileAtomic"
>writeFileAtomic</A
></TT
>, so provides the same guarantees.
</P
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="section1"
><A NAME="11"
><A NAME="11"
>generic utils
</A
></A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:equating"
><A NAME="v%3Aequating"
></A
></A
><B
>equating</B
> :: <A HREF="../base/Data-Eq.html#t%3AEq"
>Eq</A
> a =&gt; (b -&gt; a) -&gt; b -&gt; b -&gt; <A HREF="../ghc-prim/GHC-Bool.html#t%3ABool"
>Bool</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:comparing"
><A NAME="v%3Acomparing"
></A
></A
><B
>comparing</B
> :: <A HREF="../base/Data-Ord.html#t%3AOrd"
>Ord</A
> a =&gt; (b -&gt; a) -&gt; b -&gt; b -&gt; <A HREF="../ghc-prim/GHC-Ordering.html#t%3AOrdering"
>Ordering</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:isInfixOf"
><A NAME="v%3AisInfixOf"
></A
></A
><B
>isInfixOf</B
> :: <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../ghc-prim/GHC-Bool.html#t%3ABool"
>Bool</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:intercalate"
><A NAME="v%3Aintercalate"
></A
></A
><B
>intercalate</B
> ::  [a] -&gt; [[a]] -&gt; [a]</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:lowercase"
><A NAME="v%3Alowercase"
></A
></A
><B
>lowercase</B
> :: <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:wrapText"
><A NAME="v%3AwrapText"
></A
></A
><B
>wrapText</B
> :: <A HREF="../base/Data-Char.html#t%3AString"
>String</A
> -&gt; <A HREF="../base/Data-Char.html#t%3AString"
>String</A
></TD
></TR
><TR
><TD CLASS="doc"
>Wraps text to the default line width. Existing newlines are preserved.
</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><A NAME="v:wrapLine"
><A NAME="v%3AwrapLine"
></A
></A
><B
>wrapLine</B
> :: <A HREF="../ghc-prim/GHC-Types.html#t%3AInt"
>Int</A
> -&gt; [<A HREF="../base/Data-Char.html#t%3AString"
>String</A
>] -&gt; [[<A HREF="../base/Data-Char.html#t%3AString"
>String</A
>]]</TD
></TR
><TR
><TD CLASS="doc"
>Wraps a list of words to a list of lines of words of a particular width.
</TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="botbar"
>Produced by <A HREF="http://www.haskell.org/haddock/"
>Haddock</A
> version 2.4.2</TD
></TR
></TABLE
></BODY
></HTML
>