cat /nix/store/jv40yw2ny28nnpbf860aaqq1dhga0f0r-
#16130: GHC Panic on OS X: Data.Binary.Get.runGet: Invalid magic number "INPUT(-l" ---------------------------------+---------------------------------------- Reporter: basvandijk | Owner: (none) Type: bug | Status: new Priority: high | Milestone: Component: Compiler | Version: 8.6.3 Resolution: | Keywords: Operating System: MacOS X | Architecture: Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | ---------------------------------+---------------------------------------- Comment (by basvandijk): As I [https://github.com/NixOS/nixpkgs/issues/55848#issuecomment-464212640 just discovered], apparently my `libc++.a` in my Nix store contains the following: {{{ libc++-5.0.2/lib/libc++.a INPUT(-lc++_static -lc++abi) }}} Note that the first 8 bytes of this file are `INPUT(-` which is exactly what GHC is panicking about. It seems that GHC is expecting `libc++.a` to be a binary archive while in fact it's some kind of textual reference to the real archive `libc++_static.a` which can be found in the same directory. Are these textual archive file a Nix-specific thing that GHC doesn't support? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16130#comment:8 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler