Hi there, I'm using a system with an older version of GHC (6.8.3), and invoking ghc-pkg against a non-existing file in -f: $ haskell/ghc/v683/k8/lib/ghc-6.8.3/ghc-pkg.bin --global-conf haskell/ghc/v683/k8/lib/ghc-6.8.3/package.conf -f /tmp/nonexistent.Foo.package.conf register /tmp/Foo.package_spec ghc-pkg happily creates the file referenced with -f and fills it with these contents: [InstalledPackageInfo {package = PackageIdentifier {pkgName = "hsS-SFoo", pkgVersion = Version {versionBranch = [1,0], versionTags = []}}, license = AllRightsReserved, copyright = "", maintainer = "", author = "", stability = "", homepage = "", pkgUrl = "", description = "", category = "", exposed = False, exposedModules = [], hiddenModules = [], importDirs = [], libraryDirs = [], hsLibraries = [], extraLibraries = [], extraGHCiLibraries = [], includeDirs = [], includes = [], depends = [], hugsOptions = [], ccOptions = [], ldOptions = [], frameworkDirs = [], frameworks = [], haddockInterfaces = [], haddockHTMLs = []} ] GHC 7.0.1 it appears does not do the same thing: $ haskell/ghc/v701/k8/lib/ghc-7.0.1/ghc-pkg --global-conf haskell/ghc/v701/k8/lib/ghc-7.0.1/package.conf.d -f /tmp/nonexistent.Foo.package_conf --force register /tmp/Foo.package_spec ghc-pkg: .../bin/hs/Foo.package_conf: openFile: does not exist (No such file or directory) (paths have been mangled by hand). ghc-pkg in 6.8.3 does what it does even without using --force. What am i missing in 7.0.1? Is this a bug or is this intentional? Thanks, Tyler