sane-scripts: port sane-sync-from-iphone to nix-shell

pkgs/additional/sane-scripts/default.nix

@@ -271,6 +271,11 @@ let
       src = ./src;
       pkgs = [ "coreutils-full" ];
     };
+    sync-from-iphone = static-nix-shell.mkZsh {
+      pname = "sane-sync-from-iphone";
+      src = ./src;
+      pkgs = [ "coreutils-full" "ifuse" "rsync" ];
+    };
   };
 in
 symlinkJoin {

pkgs/additional/sane-scripts/src/sane-sync-from-iphone

@@ -1,4 +1,5 @@
-#!/usr/bin/env zsh
+#!/usr/bin/env nix-shell
+#!nix-shell -i zsh -p coreutils-full -p ifuse -p rsync
 # this really does need zsh because bash `test -e` behaves differently
 set -ex
 

pkgs/additional/static-nix-shell/default.nix

@@ -82,6 +82,18 @@ in rec {
     } // (removeAttrs attrs [ "pkgs" ])
   );
 
+  # `mkShell` specialization for `nix-shell -i zsh` scripts.
+  mkZsh = { pname, pkgs ? {}, srcPath ? pname, ...}@attrs:
+    let
+      pkgsAsAttrs = pkgsToAttrs "" pkgs' pkgs;
+      pkgsEnv = attrValues pkgsAsAttrs;
+      pkgExprs = attrNames pkgsAsAttrs;
+    in mkShell ({
+      inherit pkgsEnv pkgExprs;
+      interpreter = "${pkgs'.zsh}/bin/zsh";
+    } // (removeAttrs attrs [ "pkgs" ])
+  );
+
   # `mkShell` specialization for invocations of `nix-shell -p "python3.withPackages (...)"`
   # pyPkgs argument is parsed the same as pkgs, except that names are assumed to be relative to `"ps"` if specified in list form.
   mkPython3Bin = { pname, pkgs ? {}, pyPkgs ? {}, srcPath ? pname, ... }@attrs: