diff --git a/cutekit/builder.py b/cutekit/builder.py
index abc7184..c517517 100644
--- a/cutekit/builder.py
+++ b/cutekit/builder.py
@@ -32,7 +32,7 @@ class TargetScope(Scope):
     target: model.Target
 
     @staticmethod
-    def use(args: model.TargetArgs) -> "TargetScope":
+    def use(args: model.TargetArgs) -> "TargetScope":  # type: ignore[override]
         registry = model.Registry.use(args)
         target = model.Target.use(args)
         return TargetScope(registry, target)
@@ -324,8 +324,8 @@ def gen(out: TextIO, scope: TargetScope):
 
     w.separator("Tools")
 
-    for i in scope.target.tools:
-        tool = scope.target.tools[i]
+    for i in target.tools:
+        tool = target.tools[i]
         rule = rules.rules[i]
         w.variable(i, tool.cmd)
         w.variable(
@@ -401,14 +401,14 @@ def _(args: BuildArgs):
 
 
 class RunArgs(BuildArgs, shell.DebugArgs, shell.ProfileArgs):
-    debug: bool = cli.arg(None, "debug", "Attach a debugger")
-    profile: bool = cli.arg(None, "profile", "Profile the execution")
+    debug: bool = cli.arg("d", "debug", "Attach a debugger")
+    profile: bool = cli.arg("p", "profile", "Profile the execution")
     args: list[str] = cli.extra("args", "Arguments to pass to the component")
 
 
 @cli.command("r", "builder/run", "Run a component")
 def runCmd(args: RunArgs):
-    args.props |= {"debug": args.debug}
+    args.props |= {"debug": str(args.debug).lower()}
     scope = TargetScope.use(args)
 
     component = scope.registry.lookup(
diff --git a/cutekit/cli.py b/cutekit/cli.py
index 6a0a81d..2798ca9 100644
--- a/cutekit/cli.py
+++ b/cutekit/cli.py
@@ -308,10 +308,14 @@ class Field:
         )
 
     def innerType(self) -> type:
+        assert self._fieldType
+
         if self.isList():
+            assert isinstance(self._fieldType, GenericAlias)
             return self._fieldType.__args__[0]
 
         if self.isDict():
+            assert isinstance(self._fieldType, GenericAlias)
             return self._fieldType.__args__[1]
 
         return self._fieldType
@@ -362,6 +366,7 @@ class Field:
         return val
 
     def putValue(self, obj: Any, value: Any, subkey: Optional[str] = None):
+        assert self._fieldName
         value = self.castValue(value, subkey)
         field = getattr(obj, self._fieldName)
         if isinstance(field, list):
@@ -375,6 +380,7 @@ class Field:
             setattr(obj, self._fieldName, value)
 
     def getAttr(self, obj: Any) -> Any:
+        assert self._fieldName
         return getattr(obj, self._fieldName)
 
 
@@ -496,6 +502,7 @@ class Schema:
             arg.setDefault(res)
 
         for operand in self.operands:
+            assert operand._fieldName
             if operand.isList():
                 setattr(res, operand._fieldName, [])
             else:
@@ -696,7 +703,7 @@ class Command:
             return
 
 
-_root = Command(None, const.ARGV0)
+_root = Command(None, [const.ARGV0])
 
 
 def _splitPath(path: str) -> list[str]:
@@ -709,9 +716,11 @@ def _resolvePath(path: list[str]) -> Command:
     if path == "/":
         return _root
     cmd = _root
+    visited = []
     for name in path:
+        visited.append(name)
         if name not in cmd.subcommands:
-            cmd.subcommands[name] = Command(None, name)
+            cmd.subcommands[name] = Command(None, visited)
         cmd = cmd.subcommands[name]
     return cmd
 
diff --git a/cutekit/model.py b/cutekit/model.py
index d4b3905..a927b71 100644
--- a/cutekit/model.py
+++ b/cutekit/model.py
@@ -712,7 +712,7 @@ def view(
             continue
 
         if component.resolved[target.id].enabled:
-            fillcolor = "lightgrey" if component.type == model.Kind.LIB else "lightblue"
+            fillcolor = "lightgrey" if component.type == Kind.LIB else "lightblue"
             shape = "plaintext" if not scope == component.id else "box"
 
             g.node(
diff --git a/cutekit/shell.py b/cutekit/shell.py
index 8401fc8..456ce23 100644
--- a/cutekit/shell.py
+++ b/cutekit/shell.py
@@ -263,7 +263,10 @@ def _profileMem(cmd: list[str]):
     exec("heaptrack", "-o", perfFile, *cmd)
 
 
-def profile(cmd: list[str], rate=1000, what: Literal["cpu", "mem"] = "cpu"):
+def profile(cmd: list[str], rate=1000, what: str = "cpu"):
+    if what not in ["cpu", "mem"]:
+        raise RuntimeError("Only cpu and mem can be profile, not " + what)
+
     if what == "cpu":
         _profileCpu(cmd, rate)
     elif what == "mem":