PT007 LET X SET

{
  "@context": "https://nxdlang.org/schema",
  "doc_id": "PT007",
  "title": "LET X SET",
  "description": "NXD Compiler Testing Notes - Nim",
  "layer": "Passed Tests",
  "category": "Passed Tests",
  "keywords": [Transpilation, Compiler, Nim], 
  "doc_version": "1.0",
  "status": "active"
}

# PT007 LET X SET 

### NXD Sample:

(st007.nxd)
```nxd
MODULE TEST

FUNC MAIN()
    LET X SET 1

    PRINTLN(X)
```    

### Result:

COMPILER: PASS
SEMANTICS: PASS

Expected Output:

### Actual Output:

```nim
# test


proc main() =
  var x = 1
  println(x)
```


### Notes:

Verified LET statement parsing.
Verified variable assignment lowering into IR.
Verified variable reference usage within a later statement.
Verified function call parsing (PRINTLN).
Verified call expression serialization to JSON.
Verified Rust deserialization of variable and call-expression nodes.
Verified Nim backend emission of variable declaration and function invocation.
Confirmed multi-statement function bodies survive the full pipeline.

#### Technical Significance:

First validation of state being created and reused across statements.
First validation of call-expression flow through Python → JSON → Rust → Nim.
Establishes baseline support for user-defined variables and future API/library calls.