Hello. I am not sure if this is the right place to report this. I encountered a segmentation fault when running Pacman in x86_64 Arch Linux. To reproduce the problem, I ran: sudo pacman -S ghc --debug &> pacman_ghc_segfault.txt The full output is attached to this email. The part of the output right before the segmentation fault looks like this: ==== debug: checking dependencies debug: checkdeps: package ghc-7.10.3-1 debug: checkdeps: transaction would break 'ghc=7.10.2' dependency of 'haskell-data-default' debug: checkdeps: transaction would break 'ghc=7.10.2' dependency of 'haskell-data-default-class' debug: checkdeps: transaction would break 'ghc=7.10.2' dependency of 'haskell-data-default-instances-base' debug: checkdeps: transaction would break 'ghc=7.10.2' dependency of 'haskell-data-default-instances-containers' debug: checkdeps: transaction would break 'ghc=7.10.2' dependency of 'haskell-data-default-instances-dlist' debug: checkdeps: transaction would break 'ghc=7.10.2' dependency of 'haskell-data-default-instances-old-locale' debug: checkdeps: transaction would break 'ghc=7.10.2' dependency of 'haskell-dlist' debug: checkdeps: transaction would break 'ghc=7.10.2' dependency of 'haskell-extensible-exceptions' debug: checkdeps: transaction would break 'ghc=7.10.2' dependency of 'haskell-mtl' debug: checkdeps: transaction would break 'ghc=7.10.2' dependency of 'haskell-old-locale' debug: checkdeps: transaction would break 'ghc=7.10.2' dependency of 'haskell-utf8-string' debug: checkdeps: transaction would break 'ghc=7.10.2' dependency of 'haskell-x11' error: failed to prepare transaction (could not satisfy dependencies) error: segmentation fault Please submit a full bug report with --debug if appropriate. ==== The reason I tried to update the ghc package by itself is because I got this strange error when running "pacman -Syu". I have seen file conflict errors before, but this one did not list any file names on the path, so I didn't know how to fix it. (I removed the progress bar from the output.) ==== (23/23) checking for file conflicts error: failed to commit transaction (conflicting files) Errors occurred, no packages were upgraded. ==== I could probably fix my system by uninstalling ghc and the haskell packages, but don't worry about that. The point of this report is not to get help, but to report a bug and give the pacman developers any information that is needed to fix it. Please let me know if you want me to provide any more information. --David Grayson