add compat templates

default.nix

@@ -0,0 +1,3 @@
+(import (fetchTarball https://github.com/edolstra/flake-compat/archive/master.tar.gz) {
+  src = builtins.fetchGit ./.;
+}).defaultNix

shell.nix

@@ -1,49 +1,3 @@
-let
-  sources = import ./nix/sources.nix;
-  system = if builtins.currentSystem == "aarch64-darwin" then
-    "x86_64-darwin"
-  else
-    builtins.currentSystem;
-  nixpkgs = import sources.nixpkgs { inherit system; };
-  niv = import sources.niv { };
-in with nixpkgs;
-stdenv.mkDerivation {
-  name = "noredink-ui";
-  buildInputs = [
-    # base dependencies
-    git
-    niv.niv
-    jq
-    zstd
-
-    # building with Shake
-    haskellPackages.ormolu
-    (haskellPackages.ghcWithPackages (ps: [ ps.shake ]))
-
-    # node dependencies
-    nodejs
-    nodePackages.npm
-
-    # elm dependencies
-    elmPackages.elm
-    elmPackages.elm-format
-    elmPackages.elm-test
-    elmPackages.elm-language-server
-    elmPackages.elm-verify-examples
-    elmPackages.elm-review
-    elmPackages.elm-json
-    (pkgs.callPackage sources.elm-forbid-import { })
-
-    # preview dependencies
-    python3
-    watchexec
-
-    # stuff we need for running builds in a `nix-shell --pure` environment.
-    which
-    netcat-gnu
-
-    # Buck dependencies
-    black
-    buildifier
-  ] ++ lib.optionals stdenv.isLinux [ pkgs.fsatrace pkgs.strace pkgs.cacert ];
-}
+(import (fetchTarball https://github.com/edolstra/flake-compat/archive/master.tar.gz) {
+  src = builtins.fetchGit ./.;
+}).shellNix