fix(tvix/shell): simplify darwin-specific overrides

The new apple-sdk pattern no longer requires manually specifying
frameworks.

Change-Id: I70995f2353f540c1d5b6fc71e009860c1a20e551
Reviewed-on: https://cl.snix.dev/c/snix/+/30116
Tested-by: besadii
Reviewed-by: Ilan Joselevich <personal@ilanjoselevich.com>

snix/shell.nix

@@ -8,22 +8,6 @@
   pkgs ? (import ./nixpkgs {
     depotOverlays = false;
     depot.third_party.sources = import ./sources { };
-    additionalOverlays = [
-      (self: super: {
-        # macFUSE bump containing fix for https://github.com/osxfuse/osxfuse/issues/974
-        # https://github.com/NixOS/nixpkgs/pull/320197
-        fuse =
-          if super.stdenv.isDarwin then
-            super.fuse.overrideAttrs
-              (old: rec {
-                version = "4.8.0";
-                src = super.fetchurl {
-                  url = "https://github.com/osxfuse/osxfuse/releases/download/macfuse-${version}/macfuse-${version}.dmg";
-                  hash = "sha256-ucTzO2qdN4QkowMVvC3+4pjEVjbwMsB0xFk+bvQxwtQ=";
-                };
-              }) else super.fuse;
-      })
-    ];
   })
 , withIntegration ? false
 , ...
@@ -56,11 +40,6 @@ pkgs.mkShell {
     pkgs.protobuf
   ] ++ pkgs.lib.optionals pkgs.stdenv.isLinux [
     pkgs.runc
-  ] ++ pkgs.lib.optionals pkgs.stdenv.isDarwin [
-    # We need these two dependencies in the ambient environment to be able to
-    # `cargo build` on MacOS.
-    pkgs.libiconv
-    pkgs.buildPackages.darwin.apple_sdk.frameworks.Security
   ] ++ pkgs.lib.optionals withIntegration [
     pkgs.cbtemulator
     pkgs.google-cloud-bigtable-tool