Update build.zig: rename path->source (#39)

See ziglang/zig#11557

tools/regz/build.zig

@@ -47,7 +47,7 @@ pub const Regz = struct {
         exe.setTarget(target);
         exe.setBuildMode(mode);
         exe.addOptions("build_options", build_options);
-        exe.addPackagePath("clap", root() ++ pkgs.clap.path.path);
+        exe.addPackagePath("clap", root() ++ pkgs.clap.source.path);
         xml.link(exe);
 
         var regz = builder.allocator.create(Regz) catch unreachable;

tools/regz/deps.zig

@@ -9,7 +9,7 @@ pub const build_pkgs = struct {
 pub const pkgs = struct {
     pub const clap = Pkg{
         .name = "clap",
-        .path = FileSource{
+        .source = FileSource{
             .path = ".gyro/zig-clap-Hejsil-github.com-996821a3/pkg/clap.zig",
         },
     };