fix for windows platform

src/install.zig

@@ -80,6 +80,18 @@ fn install_zig(version: []const u8) !void {
 
     try util_extract.extract(extract_dir, new_file, if (builtin.os.tag == .windows) .zip else .tarxz, false);
 
+    // mv
+    const sub_path = try std.fs.path.join(arena_allocator, &.{
+        extract_path, try std.mem.concat(
+            arena_allocator,
+            u8,
+            &.{ "zig-", reverse_platform_str, "-", version },
+        ),
+    });
+    defer std.fs.deleteTreeAbsolute(sub_path) catch unreachable;
+
+    try util_tool.copy_dir(sub_path, extract_path);
+
     try alias.set_version(version, false);
 }
 

src/util/extract.zig

@@ -2,6 +2,7 @@
 const std = @import("std");
 const builtin = @import("builtin");
 const data = @import("data.zig");
+const tool = @import("tool.zig");
 
 const xz = std.compress.xz;
 const tar = std.tar;
@@ -41,26 +42,17 @@ fn extract_zip_dir(out_dir: std.fs.Dir, file: std.fs.File) !void {
     const allocator = arena.allocator();
     // for decompressing zig, we need to make a temp directory
     const tmp_path = try data.get_zvm_path_segment(allocator, "tmpdir");
-    defer std.fs.deleteDirAbsolute(tmp_path) catch unreachable;
+    defer std.fs.deleteTreeAbsolute(tmp_path) catch unreachable;
 
     try std.fs.makeDirAbsolute(tmp_path);
     var tmp_dir = try std.fs.openDirAbsolute(tmp_path, .{ .iterate = true });
+    defer tmp_dir.close();
 
-    // extract zig
+    // extract zip
     try std.zip.extract(tmp_dir, file.seekableStream(), .{});
 
-    var iterate = tmp_dir.iterate();
-    var sub_dir = blk: {
-        const entry = try iterate.next() orelse return error.NotFound;
-        break :blk try tmp_dir.openDir(entry.name, .{ .iterate = true });
-    };
-    defer sub_dir.close();
+    const out_path = try out_dir.realpathAlloc(allocator, "");
+    defer allocator.free(out_path);
 
-    const sub_path = try sub_dir.realpathAlloc(allocator, "");
-    defer std.fs.deleteDirAbsolute(sub_path) catch unreachable;
-
-    var sub_iterate = sub_dir.iterate();
-    while (try sub_iterate.next()) |entry| {
-        try std.fs.rename(sub_dir, entry.name, out_dir, entry.name);
-    }
+    try tool.copy_dir(tmp_path, out_path);
 }