Hi all, We are imminently going to remove the make build system. See: https://gitlab.haskell.org/ghc/ghc/-/merge_requests/7094 There is quite extensive documentation about using hadrian, the best place to start is the in-tree documentation: https://gitlab.haskell.org/ghc/ghc/-/blob/master/hadrian/README.md For packagers: * The 9.4.* series will be the last release series which can be built with the make build system. * 9.6.* will only be able to be built using hadrian. * See ghcs-nix for an example of how to modify your own build system to use hadrian: https://gitlab.haskell.org/bgamari/ghcs-nix/-/blob/master/hadrian.nix * Sam Derbyshire is creating a guide aimed at packagers describing how to migrate their build plans. Cheers, Matt