All overrides necessary to get to the rel8 build plan

cabal.project.haskell-nix

@@ -0,0 +1,10 @@
+-- Haskell.nix overrides. We don't put these in cabal.project, because Cabal
+-- will interpret them as local packages, and try to build them when we cabal
+-- build. The only reason we have to specify these is for Haskell.nix to know to
+-- override these packages by fetching them rather than using Hackage.
+
+source-repository-package
+  type: git
+  location: git://github.com/galenhuntington/data-serializer
+  tag: 070d681f97b705f47716e13b646512140524f940
+  --sha256: 198g99ksglnc7c45sjm2xyay1m6hfj4afkp3sksdss5w5abp543f

default.nix

@@ -13,6 +13,8 @@ in
 pkgs.haskell-nix.project {
   inherit compiler-nix-name;
 
+  cabalProjectLocal = builtins.readFile ./cabal.project.haskell-nix;
+
   src = pkgs.haskell-nix.haskellLib.cleanGit {
     name = "rel8";
     src = ./.;

shell.nix

@@ -5,7 +5,7 @@ let
 in
   hsPkgs.shellFor {
     withHoogle = true;
-    tools = { cabal = "3.2.0.0"; haskell-language-server = "latest"; };
+    tools = { cabal = "latest"; };
     exactDeps = false;
     buildInputs = [ pkgs.postgresql pkgs.pythonPackages.sphinx ];
   }