Reactivity fails using State management in native app using perry/ui

[h2atecnologia]

What happened

I tried running the attached code, and the reactivity of the variable used as State shows undefined in the UI, as does console.log() when the Add button was clicked.

If I use ""+ count.value or String(count.value), the UI shows the freezed initial value 3 but the console.log() shows the state.value incremented by 1.

What you expected

The expectation was that the UI would refresh the Text content in the UI just like with console.log() when the Add button was clicked.

Minimal reproduction

Compile, run counter app. Hit the Add button and you'll see the console showing undefined and on countrer app screen, Hello from Perry! undefined

import { App, Text, Button, VStack, State } from "perry/ui"

const count = State(3)
App({
    title: "My App",
    width: 400,
    height: 300,
    body: VStack(16, [
        Text(`Hello from Perry! ${ count.value }`),
        Button("Add", () => { 
          count.set( count.value + 1 ); 
          console.log(count.value);
        },
{
    backgroundColor: { r: 0.231, g: 0.510, b: 0.965, a: 1.0 },
    borderColor: { r: 0.0, g: 0.0, b: 0.0, a: 0.1 },
    borderWidth: 1,
    borderRadius: 8,
    padding: 12,
    opacity: 0.95,
    shadow: {
        color: { r: 0.0, g: 0.0, b: 0.0, a: 0.25 },
        blur: 12,
        offsetX: 0,
        offsetY: 4,
    },
    tooltip: "Save the current document",
    enabled: true,
}
)
    ]),
})

Command you ran:

perry compile counter.ts -o counter

Environment

• Perry version: 0.5.1220
• Host OS: macOS 15.7.7
• Target: native
• Rust toolchain: n/a
• Installed via: brew

Diagnostic output

Perry Doctor

Environment Checks
──────────────────
✓ perry version: 0.5.1220
✓ update status: up to date
✓ clang (LLVM codegen): Apple clang version 17.0.0 (clang-1700.6.4.2)
✓ system linker (cc): Apple clang version 17.0.0 (clang-1700.6.4.2)
✓ runtime library: /opt/homebrew/lib/libperry_runtime.a
✓ project config (perry.toml): found
✓ compatibility reports (#849): mode=ask (sent=0, suppressed-by-dedup=0, queued=0, cache=empty)

All checks passed!

Anything else

perry compile counter.ts -o counter 
Collecting modules...
  Package alias: react → perry-react
  Package alias: react-dom → perry-react
  Package alias: react-dom/client → perry-react
  Package alias: react/jsx-runtime → perry-react
Found 1 module(s): 1 native, 0 JavaScript
Generating code...
Reused cached object: /Users/henrique/node/poc-perryts/node_modules/.cache/perry/objects/host/86e5653ac45e4404.o
Linking (runtime-only)...
[strip-dedup] Processing: /opt/homebrew/lib/libperry_ui_macos.a
[strip-dedup] ar found: /usr/bin/ar
[strip-dedup] libperry_ui_macos.a: 431 total members
[strip-dedup] libperry_stdlib.a found: /opt/homebrew/Cellar/perry/0.5.1220/lib/libperry_stdlib.a — 1234 members loaded
[strip-dedup] libperry_runtime.a found: /opt/homebrew/Cellar/perry/0.5.1220/lib/libperry_runtime.a — 113 members loaded
[strip-dedup] Total exclude set: 1347 members from stdlib+runtime .lib files
[strip-dedup] rlib NOT found: /opt/homebrew/lib/libperry_ui_macos.rlib
[strip-dedup] libperry_stdlib.a symbols loaded: 0
[strip-dedup] libperry_runtime.a symbols loaded: 0
[strip-dedup] libperry_ui_macos.a: keeping 200 of 431 members (excluded: 0 by symbol-subset, 231 by name pattern)
[strip-dedup] Building trimmed libperry_ui_macos.a: 200 objects total
[strip-dedup] ERROR: archive creation failed: ar: /var/folders/9j/337r8c1s0713xfmkkzvyf9qh0000gn/T/perry_strip_96024/_libperry_ui_macos.a_extract/__.SYMDEF: Permission denied

[strip-dedup] skipped for UI lib (non-fatal): Failed to create trimmed archive for libperry_ui_macos.a: ar: /var/folders/9j/337r8c1s0713xfmkkzvyf9qh0000gn/T/perry_strip_96024/_libperry_ui_macos.a_extract/__.SYMDEF: Permission denied

Linking perry/ui (native UI) from /opt/homebrew/lib/libperry_ui_macos.a
ld: warning: duplicate symbol '_rust_eh_personality' in:
    /opt/homebrew/Cellar/perry/0.5.1220/lib/libperry_ui_macos.a[39](std-17ed52d55cdc389f.std.93770f9ee7fea9f3-cgu.0.rcgu.o)
    /Users/henrique/perry/target/perry-auto-ee47744fef260b8c/release/libperry_runtime.a[65](perry_runtime-644711cd88bb7f4a.std-4f24f0876fd27385.std.7648081134ee26d8-cgu.0.rcgu.o.rcgu.o)
Wrote executable: counter
Binary size: 5.8MB

[proggeramlug]

Verified against current origin/main (1e52858cf, version 0.5.1512): this was fixed after the reported npm build by #7058.

The current HIR routes State.value through the native perry_ui_state_get getter and reactive Text(${state.value}) lowering registers stateOnChange, preserving the handle-based State path. Focused verification is green:

• cargo test -p perry-hir test_perry_ui_state_value_uses_native_getter -- --nocapture
• cargo test -p perry-transform state_desugar -- --nocapture

The report used npm/Homebrew 0.5.1220; npm latest is unfortunately still 0.5.1220, which is tracked separately by #7491. Closing this code defect as completed on main.