Hi ghc devs, I'm trying to build recent master (579bb766) on macOS Sierra but make install fails as follows: "/usr/local/ghc/ghc-HEAD/lib/ghc-8.3.20170426/bin/ghc-pkg" --force --global-package-db "/usr/local/ghc/ghc-HEAD/lib/ghc-8.3.20170426/package.conf.d" update rts/dist/package.conf.install Reading package info from "rts/dist/package.conf.install" ... done. : Warning: Unrecognized field exposed-modules on line 708 : Warning: Unrecognized field key on line 703 : Warning: Unrecognized field id on line 702 : Warning: Unrecognized field version on line 701 : Warning: Unrecognized field name on line 700 : invalid package identifier: : missing id field make[1]: *** [install_packages] Error 1 make: *** [install] Error 2 The package.conf.install in question is available here: https://gist.github.com/maoe/2cff85004ef8765937023425c53f2cc7. And my build.mk is here: https://gist.github.com/maoe/caee7b2dfd921def4e95580c202cd664 I can't reproduce this error on Linux. Does anyone know how to fix it? Regards, Mitsutoshi