Moduleghc-boot-9.10.3Haskell2010

GHC.BaseDir

Note [Base Dir] ~~~~~~~~~~~~~~~~~ GHC's base directory or top directory containers miscellaneous settings and the package database. The main compiler of course needs this directory to read those settings and read and write packages. ghc-pkg uses it to find the global package database too.

In the interest of making GHC builds more relocatable, many settings also will expand `${top_dir}` inside strings so GHC doesn't need to know it's on installation location at build time. ghc-pkg also can expand those variables and so needs the top dir location to do that too.

3 values

Packageghc-boot-9.10.3
Exports3
LanguageHaskell2010
LicenceBSD-3-Clause
SourceBaseDir.hs

valueexpandTopDir :: FilePath -> String -> String

Expand occurrences of the $topdir interpolation in a string.

valueexpandPathVar :: String -> FilePath -> String -> String

expandPathVar var value str

replaces occurrences of variable $var with value in str.

valuegetBaseDir :: IO (Maybe String)

Calculate the location of the base dir