fix(build): add overlay to fix cfg-if build

flake.nix

···
           inherit system overlays;
         };
         rustVersion = pkgs.rust-bin.stable.latest.default;
-        craneLib = (crane.mkLib pkgs).overrideToolchain rustVersion;
+        craneLib = ((crane.mkLib pkgs).overrideToolchain rustVersion).overrideScope (import ./overlays/cfg-if-fix.nix);
 
         nurPackages = import ./default.nix {
           inherit pkgs craneLib;

overlays/cfg-if-fix.nix

···
+final: prev: {
+  buildPackage = args:
+    let
+      pname = args.pname or "";
+    in
+    prev.buildPackage (args // (
+      if builtins.match "cfg-if-.*" pname != null then {
+        unpackPhase = ''
+          tar xf $src --no-same-owner
+        '';
+      } else { }
+    ));
+}

overlays/default.nix

···
 {
-  # Add your overlays here
-  #
-  # my-overlay = import ./my-overlay;
-}
+  cfg-if-fix = import ./cfg-if-fix.nix;
+}