diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index 0271a15..b24fe40 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -23,7 +23,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        python -m pip install -r requirements.txt
+        python -m pip install -r cutekit/requirements.txt
         python -m pip install mypy pytest ruff
 
     - name: Type Checking
diff --git a/cutekit/builder.py b/cutekit/builder.py
index bac082e..d884099 100644
--- a/cutekit/builder.py
+++ b/cutekit/builder.py
@@ -96,7 +96,7 @@ class ProductScope(ComponentScope):
 Compute = Callable[[TargetScope], list[str]]
 _vars: dict[str, Compute] = {}
 
-Hook = Callable[[ComponentScope], None]
+Hook = Callable[[TargetScope], None]
 _hooks: dict[str, Hook] = {}
 
 
diff --git a/cutekit/const.py b/cutekit/const.py
index e9e2a90..2d93d4a 100644
--- a/cutekit/const.py
+++ b/cutekit/const.py
@@ -14,8 +14,10 @@ def __bool__(self):
         raise Exception("Uninitialized constant")
 
 
-VERSION = (0, 7, 0, "dev")
-VERSION_STR = f"{VERSION[0]}.{VERSION[1]}.{VERSION[2]}{'-' + VERSION[3] if len(VERSION) >= 4 else ''}"
+VERSION = (0, 7, 0, "")
+VERSION_STR = (
+    f"{VERSION[0]}.{VERSION[1]}.{VERSION[2]}{'-' + VERSION[3] if VERSION[3] else ''}"
+)
 MODULE_DIR = os.path.dirname(os.path.realpath(__file__))
 
 
diff --git a/cutekit/export.py b/cutekit/export.py
index c1a6a9c..ee8e28a 100644
--- a/cutekit/export.py
+++ b/cutekit/export.py
@@ -1,6 +1,5 @@
 import os
 import json
-import html
 from typing import Any, Optional
 from . import model, cli, vt100, jexpr, const
 
diff --git a/cutekit/jexpr.py b/cutekit/jexpr.py
index 026f3d4..9c2caa2 100644
--- a/cutekit/jexpr.py
+++ b/cutekit/jexpr.py
@@ -69,7 +69,7 @@ def _expand(expr: Jexpr) -> Jexpr:
         result: dict[str, Jexpr] = {}
         for k in expr:
             key = _expand(k)
-            result[key] = _expand(expr[k])
+            result[str(key)] = _expand(expr[k])
         return result
 
     elif _isListExpr(expr):
@@ -80,7 +80,7 @@ def _expand(expr: Jexpr) -> Jexpr:
             raise ValueError(f"Expected string, got {expr[0]}")
 
         fName = _expand(expr[0][1:])
-        fVal = eval(fName, globals, locals)
+        fVal = eval(str(fName), globals, locals)
         res = fVal(*_expand(expr[1:]))
         return _expand(res)
 
@@ -90,8 +90,8 @@ def _expand(expr: Jexpr) -> Jexpr:
     elif isinstance(expr, str):
         return _extractStr(
             expr,
-            lambda e: eval(e, globals, locals)
-            if not (e.startswith("{") and e.endswith("}"))
+            lambda e: eval(str(e), globals, locals)
+            if not (isinstance(e, str) and e.startswith("{") and e.endswith("}"))
             else e,
         )
 
diff --git a/cutekit/model.py b/cutekit/model.py
index 398ba17..cb42e41 100644
--- a/cutekit/model.py
+++ b/cutekit/model.py
@@ -578,13 +578,10 @@ class Registry(DataClassJsonMixin):
     project: Project
     manifests: dict[str, Manifest] = dt.field(default_factory=dict)
 
-    def _append(self, m: Optional[Manifest]) -> Optional[Manifest]:
+    def _append(self, m: Manifest) -> Manifest:
         """
         Append a manifest to the model
         """
-        if m is None:
-            return m
-
         if m.id in self.manifests:
             raise RuntimeError(
                 f"Duplicated manifest '{m.id}' at '{m.path}' already loaded from '{self.manifests[m.id].path}'"
diff --git a/tests/test_cli.py b/tests/test_cli.py
index 06be5d6..de2f1ab 100644
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -250,7 +250,7 @@ def test_cli_extra_args():
 
 
 class StrOperandArg:
-    value: str = cli.operand(None, "value")
+    value: str = cli.operand("value")
 
 
 def test_cli_operand_args():
@@ -259,7 +259,7 @@ def test_cli_operand_args():
 
 
 class ListOperandArg:
-    value: list[str] = cli.operand(None, "value")
+    value: list[str] = cli.operand("value")
 
 
 def test_cli_operand_list_args():