Compatibility with Cabal >= 3.14

readGenericPackageDescription now uses interpretSymbolicPath internally
[1] which allows for passing in a CWD directory explicitly rather than
just inheriting it from the running process.

We want to preserve the old behavior and behave the same as
writeGenericPackageDescription which does not use interpretSymbolicPath,
so we pass Nothing. This amounts to the same behavior as just returning
the underlying path (which is what we had before) [2] [3].

This also seems safer since readGenericPackageDescription seems to
assume that the passed in CWD directory matches the process working
directory [1].

[1]: https://github.com/haskell/cabal/blob/Cabal-v3.14.1.0/Cabal/src/Distribution/Simple/PackageDescription.hs#L83-L84
[2]: https://github.com/haskell/cabal/blob/Cabal-v3.14.1.0/Cabal-syntax/src/Distribution/Utils/Path.hs#L288-L305
[3]: https://github.com/haskell/cabal/blob/Cabal-v3.14.1.0/Cabal-syntax/src/Distribution/Utils/Path.hs#L257-L259

Main.hs

@@ -10,6 +10,9 @@ import Distribution.PackageDescription.Parsec
 import Distribution.PackageDescription.PrettyPrint
 import Distribution.Types.ExeDependency
 import Distribution.Types.LegacyExeDependency
+#if MIN_VERSION_Cabal(3,14,0)
+import Distribution.Utils.Path
+#endif
 import Distribution.Verbosity
 import Distribution.Version
 import System.Environment
@@ -19,7 +22,15 @@ main = getArgs >>= mapM_ jailbreakFile
 
 jailbreakFile :: FilePath -> IO ()
 jailbreakFile cabalFile =
-  readGenericPackageDescription silent cabalFile
+  readGenericPackageDescription silent
+#if MIN_VERSION_Cabal(3,14,0)
+    -- Do not give a CWD directory, so the working dir of the process is used (like before).
+    -- Note: Passing a CWD directory is inadvisable since writeGenericPackageDescription
+    -- does not support it, so we'd get differing behavior.
+    Nothing (makeSymbolicPath cabalFile)
+#else
+    cabalFile
+#endif
   >>= writeGenericPackageDescription cabalFile . stripVersionRestrictions
 
 -- We don't relax version restrictions inside conditional statements.