#14460: Symlink resolving fails against SMB mounts -------------------------------------+------------------------------------- Reporter: astert | Owner: Phyx- Type: bug | Status: closed Priority: normal | Milestone: 8.4.1 Component: Compiler | Version: 8.2.1 Resolution: fixed | Keywords: Operating System: Windows | Architecture: Type of failure: GHC doesn't work | Unknown/Multiple at all | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D4216 Wiki Page: | -------------------------------------+------------------------------------- Comment (by Vyse007): I am still facing this exact issue with 8.4.3. On a mounted network drive (shows up as "Network Drive, NTFS" under "This PC" on Windows 10), installing GHC and then invoking it throws the following error (Z is the networked drive): {{{ PS Z:\sandbox\Vyse\8.4.3> cd .\bin\ PS Z:\sandbox\Vyse\8.4.3\bin> .\ghci ghc.exe: panic! (the 'impossible' happened) (GHC version 8.4.3 for x86_64-unknown-mingw32): can't decompose ghc.exe path: "Z:\\sandbox\\Vyse\\8.4.3\\bin\\ghc.exe" }}} I originally thought this error must be because `doesDirectoryExist` returns false when trying to decompose this path, but that's not the case... (Note that the `ghci` used below is the one currently on PATH, i.e., not on the networked drive) {{{ PS Z:\sandbox\Vyse\8.4.3\bin> ghci GHCi, version 8.4.3: http://www.haskell.org/ghc/ :? for help Prelude> import System.Directory Prelude System.Directory> doesDirectoryExist "Z:\\sandbox\\Vyse\\8.4.3\\bin\\" True }}} It might be worth noting that I don't have write permissions for all of `Z:\`, but only for my own folder there. I am willing to debug this further but I don't really know how to. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14460#comment:18 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler