fix: field parent ptr

Author: RossComputerGuy

src/phantom/platform/backends/std/sdk/step/install-pkg.zig

@@ -14,7 +14,7 @@ pub fn create(sdk: *Sdk, pkg: *Package) !*InstallPackage {
 
     self.base.init(&sdk.base, pkg, make);
 
-    const compile = @fieldParentPtr(@import("pkg.zig"), "base", pkg).compile;
+    const compile = @as(*@import("pkg.zig"), @fieldParentPtr("base", pkg)).compile;
     self.install = b.addInstallArtifact(compile, .{});
     self.base.step.dependOn(&self.install.step);
 

src/phantom/platform/backends/std/sdk/step/pkg.zig

@@ -26,8 +26,8 @@ pub fn create(sdk: *Sdk, options: Package.Options) !*Package {
 }
 
 fn make(step: *std.Build.Step, _: *std.Progress.Node) !void {
-    const pkgStep = @fieldParentPtr(Package, "step", step);
-    const self = @fieldParentPtr(Self, "base", pkgStep);
+    const pkgStep: *Package = @fieldParentPtr("step", step);
+    const self: *Self = @fieldParentPtr("base", pkgStep);
 
     pkgStep.output_file.path = step.owner.dupe(self.compile.generated_bin.?.path.?);
 }