# This is a manually-written expression over an in-tree cabal file. # It's awkward but this way allows the package user to pass in # extraPackages without much extra hassle on their end, similarly how # the XMonad service handles it: the difference is that we don't have # anything like XMONAD_GHC… # # The idea is that the user changes their configs using any libraries # he likes and then builds it using this expression. Once that's done, # ‘reload’ and similar functions should all work as long as the user # doesn't need new libraries at which point they should add them to # extraPackages and rebuild from the expression. { cabal, yi, extraPackages, makeWrapper, ghcWithPackages }: let w = ghcWithPackages (self: [ yi ] ++ extraPackages self); wrappedGhc = w.override { ignoreCollisions = true; }; in cabal.mkDerivation (self: rec { pname = "yi-custom"; version = "0.0.0.1"; src = ./yi-custom-cabal; isLibrary = true; buildDepends = [ yi ]; buildTools = [ makeWrapper ]; noHaddock = true; doCheck = false; # put custom GHC env in front which stops crap from being picked up # from user database postInstall = '' makeWrapper ${yi}/bin/yi $out/bin/yi --prefix PATH : ${wrappedGhc}/bin ''; meta = { homepage = "http://haskell.org/haskellwiki/Yi"; description = "Wrapper over user-specified Haskell libraries for use in Yi config"; license = self.stdenv.lib.licenses.publicDomain; platforms = self.ghc.meta.platforms; maintainers = with self.stdenv.lib.maintainers; [ fuuzetsu ]; }; })