nix: port iOS changes and fixes from develop

Signed-off-by: Jakub Sokołowski <jakub@status.im>

nix/mobile/ios/default.nix

@@ -1,32 +1,31 @@
-{ callPackage, lib, mkShell, deps, pkgs
+{ callPackage, lib, mkShell, pkgs
 , status-go, fastlane }:
 
 let
   inherit (lib) catAttrs unique;
 
-  pod-shell = callPackage ./pod-shell.nix { };
-  status-go-shell = callPackage ./status-go-shell.nix { inherit status-go; };
+  # Sub-shells preparing various dependencies.
+  nodejs-sh = callPackage ./shells/nodejs.nix { };
+  bundler-sh = callPackage ./shells/bundler.nix { };
+  cocoapods-sh = callPackage ./shells/cocoapods.nix { };
+  status-go-sh = callPackage ./shells/status-go.nix { inherit status-go; };
 
 in {
-  inherit pod-shell status-go-shell;
+  inherit nodejs-sh cocoapods-sh status-go-sh;
 
   shell = mkShell {
     buildInputs = with pkgs; [
-      xcodeWrapper watchman bundler procps
+      xcodeWrapper watchman procps
       flock # used in nix/scripts/node_modules.sh
     ];
 
     # WARNING: Executes shellHook in reverse order.
     inputsFrom = [
       fastlane.shell
-      pod-shell
-      status-go-shell # Needs to run before pod-install
+      cocoapods-sh
+      nodejs-sh    # before 'pod install'
+      bundler-sh   # before 'pod install'
+      status-go-sh # before 'pod install'
     ];
-
-    shellHook = ''
-      # check if node modules changed and if so install them
-      ./nix/scripts/node_modules.sh "${deps.nodejs-patched}"
-    '';
   };
-
 }

nix/mobile/ios/shells/bundler.nix

@@ -0,0 +1,8 @@
+{ mkShell, bundler }:
+
+mkShell {
+  buildInputs = [ bundler ];
+  shellHook = ''
+    bundle install --quiet --gemfile=fastlane/Gemfile
+  '';
+}

nix/mobile/ios/shells/nodejs.nix

@@ -0,0 +1,12 @@
+{ mkShell, deps }:
+
+mkShell {
+  # Fix for ERR_OSSL_EVP_UNSUPPORTED error.
+  NODE_OPTIONS = "--openssl-legacy-provider";
+
+  # check if node modules changed and if so install them
+  shellHook = ''
+    export STATUS_MOBILE_HOME=$(git rev-parse --show-toplevel)
+    "$STATUS_MOBILE_HOME/nix/scripts/node_modules.sh" ${deps.nodejs-patched}
+  '';
+}