runCmd will start __main__ by default.

cutekit/builder.py

@@ -170,7 +170,6 @@ def gen(out: TextIO, target: model.Target, registry: model.Registry):
     w.variable("cdefs", " ".join(aggregateCdefs(target)))
     w.newline()
 
-    w.rule("cp", "cp $in $out")
     for i in target.tools:
         tool = target.tools[i]
         rule = rules.rules[i]
@@ -251,11 +250,8 @@ def runCmd(args: cli.Args):
     target = model.Target.use(args)
     debug = args.consumeOpt("debug", False) is True
 
-    componentSpec = args.consumeArg()
-    if componentSpec is None:
-        raise RuntimeError("No component specified")
-
-    component = registry.lookup(componentSpec, model.Component)
+    componentSpec = args.consumeArg() or "__main__"
+    component = registry.lookup(componentSpec, model.Component, includeProvides=True)
     if component is None:
         raise RuntimeError(f"Component {componentSpec} not found")
 

cutekit/cli.py

@@ -123,7 +123,10 @@ def helpCmd(args: Args):
 
     print()
     vt100.title("Commands")
-    for cmd in sorted(commands, key=lambda c: c.shortName or c.longName):
+    for cmd in sorted(commands, key=lambda c: c.longName):
+        if cmd.longName.startswith("_"):
+            continue
+
         pluginText = ""
         if cmd.isPlugin:
             pluginText = f"{vt100.CYAN}(plugin){vt100.RESET}"

cutekit/model.py

@@ -6,6 +6,7 @@ from enum import Enum
 from typing import Any, Generator, Optional, Type, cast
 from pathlib import Path
 from dataclasses_json import DataClassJsonMixin
+import dataclasses
 from dataclasses import dataclass, field
 
 from cutekit import const, shell
@@ -243,6 +244,10 @@ class Tool(DataClassJsonMixin):
 
 Tools = dict[str, Tool]
 
+DEFAULT_TOOLS: Tools = {
+    "cp": Tool("cp"),
+}
+
 
 @dataclass
 class Target(Manifest):
@@ -472,7 +477,9 @@ class Registry(DataClassJsonMixin):
             if resolve.enabled:
                 yield c
 
-    def lookup(self, name: str, type: Type[utils.T]) -> Optional[utils.T]:
+    def lookup(
+        self, name: str, type: Type[utils.T], includeProvides: bool = False
+    ) -> Optional[utils.T]:
         """
         Lookup a manifest of a given type by name
         """
@@ -482,6 +489,11 @@ class Registry(DataClassJsonMixin):
             if isinstance(m, type):
                 return m
 
+        if includeProvides and type is Component:
+            for m in self.iter(Component):
+                if name in m.provides:
+                    return m
+
         return None
 
     def ensure(self, name: str, type: Type[utils.T]) -> utils.T:
@@ -576,6 +588,12 @@ class Registry(DataClassJsonMixin):
 
             # Resolve tooling
             tools: Tools = target.tools
+
+            # Merge in default tools
+            for k, v in DEFAULT_TOOLS.items():
+                if k not in tools:
+                    tools[k] = dataclasses.replace(v)
+
             from . import mixins as mxs
 
             for mix in mixins:

cutekit/rules.py

@@ -27,6 +27,7 @@ class Rule:
 
 
 rules: dict[str, Rule] = {
+    "cp": Rule("cp", ["*"], ["*"], "$in $out"),
     "cc": Rule(
         "cc",
         ["*.c"],