diff --git a/cutekit/__init__.py b/cutekit/__init__.py
index 124251a..dcd5944 100644
--- a/cutekit/__init__.py
+++ b/cutekit/__init__.py
@@ -27,14 +27,14 @@ def setupLogger(verbose: bool):
             level=logging.INFO,
             filename=logFile,
             filemode="w",
-            format=f"%(asctime)s %(levelname)s %(name)s: %(message)s",
+            format="%(asctime)s %(levelname)s %(name)s: %(message)s",
             datefmt="%Y-%m-%d %H:%M:%S",
         )
 
 def main() -> int:
     try:
         a = parse(sys.argv[1:])
-        setupLogger(a.consumeOpt("verbose", False) == True)
+        setupLogger(a.consumeOpt("verbose", False) is True)
         plugins.loadAll()
         cmds.exec(a)
         print()
@@ -47,4 +47,4 @@ def main() -> int:
         return 1
     except KeyboardInterrupt:
         print()
-        return 1
\ No newline at end of file
+        return 1
diff --git a/cutekit/args.py b/cutekit/args.py
index 6109b92..60176c1 100644
--- a/cutekit/args.py
+++ b/cutekit/args.py
@@ -14,9 +14,10 @@ class Args:
 
     def consumePrefix(self, prefix: str) -> dict[str, Value]:
         result: dict[str, Value] = {}
-        for key, value in self.opts.items():
+        copy = self.opts.copy()
+        for key, value in copy.items():
             if key.startswith(prefix):
-                result[key[len(prefix):]] = value
+                result[key[len(prefix) :]] = value
                 del self.opts[key]
         return result
 
diff --git a/cutekit/builder.py b/cutekit/builder.py
index 5fe9f6c..d287dd2 100644
--- a/cutekit/builder.py
+++ b/cutekit/builder.py
@@ -21,8 +21,7 @@ def gen(out: TextIO, context: Context):
 
     writer.separator("Tools")
 
-    writer.variable("cincs", " ".join(
-        map(lambda i: f"-I{i}", context.cincls())))
+    writer.variable("cincs", " ".join(map(lambda i: f"-I{i}", context.cincls())))
 
     writer.variable("cdefs", " ".join(context.cdefs()))
 
@@ -35,10 +34,12 @@ def gen(out: TextIO, context: Context):
         tool = target.tools[i]
         rule = rules.rules[i]
         writer.variable(i, tool.cmd)
-        writer.variable(
-            i + "flags", " ".join(rule.args + tool.args))
+        writer.variable(i + "flags", " ".join(rule.args + tool.args))
         writer.rule(
-            i, f"{tool.cmd} {rule.rule.replace('$flags',f'${i}flags')}", depfile=rule.deps)
+            i,
+            f"{tool.cmd} {rule.rule.replace('$flags',f'${i}flags')}",
+            depfile=rule.deps,
+        )
         writer.newline()
 
     writer.separator("Components")
@@ -56,7 +57,7 @@ def gen(out: TextIO, context: Context):
             if r is None:
                 raise RuntimeError(f"Unknown rule for file {obj[0]}")
             t = target.tools[r.id]
-            writer.build(obj[1], r.id,  obj[0], order_only=t.files)
+            writer.build(obj[1], r.id, obj[0], order_only=t.files)
 
         for asset in assets:
             writer.build(asset[1], "cp", asset[0])
@@ -64,8 +65,12 @@ def gen(out: TextIO, context: Context):
         writer.newline()
 
         if instance.isLib():
-            writer.build(instance.outfile(), "ar",
-                         list(map(lambda o: o[1], objects)), implicit=list(map(lambda o: o[1], assets)))
+            writer.build(
+                instance.outfile(),
+                "ar",
+                list(map(lambda o: o[1], objects)),
+                implicit=list(map(lambda o: o[1], assets)),
+            )
         else:
             libraries: list[str] = []
 
@@ -80,8 +85,12 @@ def gen(out: TextIO, context: Context):
 
                 libraries.append(reqInstance.outfile())
 
-            writer.build(instance.outfile(), "ld", list(
-                map(lambda o: o[1], objects)) + libraries, implicit=list(map(lambda o: o[1], assets)))
+            writer.build(
+                instance.outfile(),
+                "ld",
+                list(map(lambda o: o[1], objects)) + libraries,
+                implicit=list(map(lambda o: o[1], assets)),
+            )
 
             all.append(instance.outfile())
 
@@ -109,9 +118,10 @@ def build(componentSpec: str, targetSpec: str, props: Props = {}) -> ComponentIn
 
     if not instance.enabled:
         raise RuntimeError(
-            f"Component {componentSpec} is disabled: {instance.disableReason}")
+            f"Component {componentSpec} is disabled: {instance.disableReason}"
+        )
 
-    shell.exec(f"ninja", "-f", ninjaPath, instance.outfile())
+    shell.exec("ninja", "-f", ninjaPath, instance.outfile())
 
     return instance
 
@@ -127,8 +137,8 @@ class Paths:
         self.obj = obj
 
 
-def buildAll(targetSpec: str) -> Context:
-    context = contextFor(targetSpec)
+def buildAll(targetSpec: str, props: Props = {}) -> Context:
+    context = contextFor(targetSpec, props)
 
     shell.mkdir(context.builddir())
     ninjaPath = os.path.join(context.builddir(), "build.ninja")
@@ -136,7 +146,7 @@ def buildAll(targetSpec: str) -> Context:
     with open(ninjaPath, "w") as f:
         gen(f, context)
 
-    shell.exec(f"ninja", "-v", "-f", ninjaPath)
+    shell.exec("ninja", "-v", "-f", ninjaPath)
 
     return context
 
@@ -150,7 +160,7 @@ def testAll(targetSpec: str):
     with open(ninjaPath, "w") as f:
         gen(f, context)
 
-    shell.exec(f"ninja", "-v", "-f", ninjaPath, "all")
+    shell.exec("ninja", "-v", "-f", ninjaPath, "all")
 
     for instance in context.enabledInstances():
         if instance.isLib():
diff --git a/cutekit/cmds.py b/cutekit/cmds.py
index a36a927..2e6fef1 100644
--- a/cutekit/cmds.py
+++ b/cutekit/cmds.py
@@ -22,7 +22,13 @@ class Cmd:
     callback: Callable[[Args], NoReturn]
     isPlugin: bool = False
 
-    def __init__(self, shortName: Optional[str], longName: str, helpText: str, callback: Callable[[Args], NoReturn]):
+    def __init__(
+        self,
+        shortName: Optional[str],
+        longName: str,
+        helpText: str,
+        callback: Callable[[Args], NoReturn],
+    ):
         self.shortName = shortName
         self.longName = longName
         self.helpText = helpText
@@ -41,15 +47,15 @@ def append(cmd: Cmd):
 def runCmd(args: Args):
     project.chdir()
 
-    targetSpec = cast(str, args.consumeOpt(
-        "target", "host-" + shell.uname().machine))
+    targetSpec = cast(str, args.consumeOpt("target", "host-" + shell.uname().machine))
+    props = args.consumePrefix("prop:")
 
     componentSpec = args.consumeArg()
 
     if componentSpec is None:
         raise RuntimeError("Component not specified")
 
-    component = builder.build(componentSpec, targetSpec)
+    component = builder.build(componentSpec, targetSpec, props)
 
     os.environ["CK_TARGET"] = component.context.target.id
     os.environ["CK_COMPONENT"] = component.id()
@@ -64,8 +70,7 @@ cmds += [Cmd("r", "run", "Run the target", runCmd)]
 def testCmd(args: Args):
     project.chdir()
 
-    targetSpec = cast(str, args.consumeOpt(
-        "target", "host-" + shell.uname().machine))
+    targetSpec = cast(str, args.consumeOpt("target", "host-" + shell.uname().machine))
     builder.testAll(targetSpec)
 
 
@@ -75,15 +80,15 @@ cmds += [Cmd("t", "test", "Run all test targets", testCmd)]
 def debugCmd(args: Args):
     project.chdir()
 
-    targetSpec = cast(str, args.consumeOpt(
-        "target", "host-" + shell.uname().machine))
+    targetSpec = cast(str, args.consumeOpt("target", "host-" + shell.uname().machine))
+    props = args.consumePrefix("prop:")
 
     componentSpec = args.consumeArg()
 
     if componentSpec is None:
         raise RuntimeError("Component not specified")
 
-    component = builder.build(componentSpec, targetSpec)
+    component = builder.build(componentSpec, targetSpec, props)
 
     os.environ["CK_TARGET"] = component.context.target.id
     os.environ["CK_COMPONENT"] = component.id()
@@ -98,15 +103,14 @@ cmds += [Cmd("d", "debug", "Debug the target", debugCmd)]
 def buildCmd(args: Args):
     project.chdir()
 
-    targetSpec = cast(str, args.consumeOpt(
-        "target", "host-" + shell.uname().machine))
-
+    targetSpec = cast(str, args.consumeOpt("target", "host-" + shell.uname().machine))
+    props = args.consumePrefix("prop:")
     componentSpec = args.consumeArg()
 
     if componentSpec is None:
-        builder.buildAll(targetSpec)
+        builder.buildAll(targetSpec, props)
     else:
-        builder.build(componentSpec, targetSpec)
+        builder.build(componentSpec, targetSpec, props)
 
 
 cmds += [Cmd("b", "build", "Build the target", buildCmd)]
@@ -120,16 +124,15 @@ def listCmd(args: Args):
 
     vt100.title("Components")
     if len(components) == 0:
-        print(f"   (No components available)")
+        print("   (No components available)")
     else:
-        print(vt100.indent(vt100.wordwrap(
-            ", ".join(map(lambda m: m.id, components)))))
+        print(vt100.indent(vt100.wordwrap(", ".join(map(lambda m: m.id, components)))))
     print()
 
     vt100.title("Targets")
 
     if len(targets) == 0:
-        print(f"   (No targets available)")
+        print("   (No targets available)")
     else:
         print(vt100.indent(vt100.wordwrap(", ".join(map(lambda m: m.id, targets)))))
 
@@ -171,11 +174,12 @@ def helpCmd(args: Args):
             pluginText = f"{vt100.CYAN}(plugin){vt100.RESET}"
 
         print(
-            f" {vt100.GREEN}{cmd.shortName or ' '}{vt100.RESET}  {cmd.longName} - {cmd.helpText} {pluginText}")
+            f" {vt100.GREEN}{cmd.shortName or ' '}{vt100.RESET}  {cmd.longName} - {cmd.helpText} {pluginText}"
+        )
 
     print()
     vt100.title("Logging")
-    print(f"    Logs are stored in:")
+    print("    Logs are stored in:")
     print(f"     - {const.PROJECT_LOG_FILE}")
     print(f"     - {const.GLOBAL_LOG_FILE}")
 
@@ -193,17 +197,15 @@ cmds += [Cmd("v", "version", "Show current version", versionCmd)]
 def graphCmd(args: Args):
     project.chdir()
 
-    targetSpec = cast(str, args.consumeOpt(
-        "target", "host-" + shell.uname().machine))
+    targetSpec = cast(str, args.consumeOpt("target", "host-" + shell.uname().machine))
 
     scope: Optional[str] = cast(Optional[str], args.tryConsumeOpt("scope"))
-    onlyLibs: bool = args.consumeOpt("only-libs", False) == True
-    showDisabled: bool = args.consumeOpt("show-disabled", False) == True
+    onlyLibs: bool = args.consumeOpt("only-libs", False) is True
+    showDisabled: bool = args.consumeOpt("show-disabled", False) is True
 
     context = contextFor(targetSpec)
 
-    graph.view(context, scope=scope, showExe=not onlyLibs,
-               showDisabled=showDisabled)
+    graph.view(context, scope=scope, showExe=not onlyLibs, showDisabled=showDisabled)
 
 
 cmds += [Cmd("g", "graph", "Show dependency graph", graphCmd)]
@@ -218,8 +220,9 @@ def grabExtern(extern: dict[str, Extern]):
             continue
 
         print(f"Installing {extSpec}-{ext.tag} from {ext.git}...")
-        shell.popen("git", "clone", "--depth", "1", "--branch",
-                    ext.tag, ext.git, extPath)
+        shell.popen(
+            "git", "clone", "--depth", "1", "--branch", ext.tag, ext.git, extPath
+        )
 
         if os.path.exists(os.path.join(extPath, "project.json")):
             grabExtern(context.loadProject(extPath).extern)
@@ -238,31 +241,33 @@ cmds += [Cmd("i", "install", "Install all the external packages", installCmd)]
 def initCmd(args: Args):
     import requests
 
-    repo = args.consumeOpt('repo', const.DEFAULT_REPO_TEMPLATES)
-    list = args.consumeOpt('list')
+    repo = args.consumeOpt("repo", const.DEFAULT_REPO_TEMPLATES)
+    list = args.consumeOpt("list")
 
     template = args.consumeArg()
     name = args.consumeArg()
 
     logger.info("Fetching registry...")
-    r = requests.get(
-        f'https://raw.githubusercontent.com/{repo}/main/registry.json')
+    r = requests.get(f"https://raw.githubusercontent.com/{repo}/main/registry.json")
 
     if r.status_code != 200:
-        logger.error('Failed to fetch registry')
+        logger.error("Failed to fetch registry")
         exit(1)
 
     registry = r.json()
 
     if list:
-        print('\n'.join(
-            f"* {entry['id']} - {entry['description']}" for entry in registry))
+        print(
+            "\n".join(f"* {entry['id']} - {entry['description']}" for entry in registry)
+        )
         return
 
     if not template:
-        raise RuntimeError('Template not specified')
+        raise RuntimeError("Template not specified")
+
+    def template_match(t: Json) -> str:
+        return t["id"] == template
 
-    template_match: Callable[[Json], str] = lambda t: t['id'] == template
     if not any(filter(template_match, registry)):
         raise LookupError(f"Couldn't find a template named {template}")
 
@@ -279,9 +284,12 @@ def initCmd(args: Args):
 
     print("We suggest that you begin by typing:")
     print(f"  {vt100.GREEN}cd {name}{vt100.RESET}")
-    print(f"  {vt100.GREEN}cutekit install{vt100.BRIGHT_BLACK} # Install external packages{vt100.RESET}")
     print(
-        f"  {vt100.GREEN}cutekit build{vt100.BRIGHT_BLACK}  # Build the project{vt100.RESET}")
+        f"  {vt100.GREEN}cutekit install{vt100.BRIGHT_BLACK} # Install external packages{vt100.RESET}"
+    )
+    print(
+        f"  {vt100.GREEN}cutekit build{vt100.BRIGHT_BLACK}  # Build the project{vt100.RESET}"
+    )
 
 
 cmds += [Cmd("I", "init", "Initialize a new project", initCmd)]
diff --git a/cutekit/compat.py b/cutekit/compat.py
index 8da16ce..dbcacc3 100644
--- a/cutekit/compat.py
+++ b/cutekit/compat.py
@@ -21,13 +21,13 @@ UNSUPORTED_MANIFEST = {
 
 
 def ensureSupportedManifest(manifest: Any, path: str):
-    if not "$schema" in manifest:
+    if "$schema" not in manifest:
         raise RuntimeError(f"Missing $schema in {path}")
 
     if manifest["$schema"] in UNSUPORTED_MANIFEST:
         raise RuntimeError(
             f"Unsupported manifest schema {manifest['$schema']} in {path}: {UNSUPORTED_MANIFEST[manifest['$schema']]}")
 
-    if not manifest["$schema"] in SUPPORTED_MANIFEST:
+    if manifest["$schema"] not in SUPPORTED_MANIFEST:
         raise RuntimeError(
             f"Unsupported manifest schema {manifest['$schema']} in {path}")
diff --git a/cutekit/const.py b/cutekit/const.py
index b4dfc10..a3dbec0 100644
--- a/cutekit/const.py
+++ b/cutekit/const.py
@@ -11,7 +11,7 @@ BUILD_DIR = os.path.join(PROJECT_CK_DIR, "build")
 CACHE_DIR = os.path.join(PROJECT_CK_DIR, "cache")
 EXTERN_DIR = os.path.join(PROJECT_CK_DIR, "extern")
 SRC_DIR = "src"
-META_DIR = f"meta"
+META_DIR = "meta"
 TARGETS_DIR = os.path.join(META_DIR, "targets")
 DEFAULT_REPO_TEMPLATES = "cute-engineering/cutekit-templates"
 DESCRIPTION = "A build system and package manager for low-level software development"
diff --git a/cutekit/context.py b/cutekit/context.py
index 10e98c2..f8b6ca6 100644
--- a/cutekit/context.py
+++ b/cutekit/context.py
@@ -288,7 +288,7 @@ def contextFor(targetSpec: str, props: Props = {}) -> Context:
     instances: list[ComponentInstance] = list(
         map(lambda c: instanciateDisabled(c, target), disabled))
 
-    instances += cast(list[ComponentInstance], list(filter(lambda e: e != None, map(lambda c: instanciate(
+    instances += cast(list[ComponentInstance], list(filter(lambda e: e is not None, map(lambda c: instanciate(
         c.id, components, target), components))))
 
     context[targetSpec] = Context(
diff --git a/cutekit/jexpr.py b/cutekit/jexpr.py
index c223680..4f5338c 100644
--- a/cutekit/jexpr.py
+++ b/cutekit/jexpr.py
@@ -10,15 +10,21 @@ Builtin = Callable[..., Json]
 
 BUILTINS: Final[dict[str, Builtin]] = {
     "uname": lambda arg, ctx: getattr(shell.uname(), arg).lower(),
-    "include": lambda arg, ctx: evalRead(arg),
-    "evalRead": lambda arg, ctx: evalRead(arg),
-    "join": lambda lhs, rhs, ctx: cast(Json, {**lhs, **rhs} if isinstance(lhs, dict) else lhs + rhs),
+    "include": lambda arg, ctx: evalRead(arg, compatibilityCheck=False),
+    "evalRead": lambda arg, ctx: evalRead(arg, compatibilityCheck=False),
+    "join": lambda lhs, rhs, ctx: cast(
+        Json, {**lhs, **rhs} if isinstance(lhs, dict) else lhs + rhs
+    ),
     "concat": lambda *args, ctx: "".join(args),
+    "first": lambda arg, ctx: arg[0],
+    "last": lambda arg, ctx: arg[-1],
     "eval": lambda arg, ctx: eval(arg, ctx["filepath"]),
     "read": lambda arg, ctx: read(arg),
     "exec": lambda *args, ctx: shell.popen(*args).splitlines(),
     "latest": lambda arg, ctx: shell.latest(arg),
-    "abspath": lambda *args, ctx: os.path.normpath(os.path.join(os.path.dirname(ctx["filepath"]), *args))
+    "abspath": lambda *args, ctx: os.path.normpath(
+        os.path.join(os.path.dirname(ctx["filepath"]), *args)
+    ),
 }
 
 
@@ -33,7 +39,9 @@ def eval(jexpr: Json, filePath: str) -> Json:
         if len(jexpr) > 0 and isinstance(jexpr[0], str) and jexpr[0].startswith("@"):
             funcName = jexpr[0][1:]
             if funcName in BUILTINS:
-                return BUILTINS[funcName](*eval(jexpr[1:], filePath), ctx={"filepath": filePath})
+                return BUILTINS[funcName](
+                    *eval(jexpr[1:], filePath), ctx={"filepath": filePath}
+                )
 
             raise RuntimeError(f"Unknown macro {funcName}")
         else:
@@ -50,7 +58,8 @@ def read(path: str) -> Json:
         raise RuntimeError(f"Failed to read {path}")
 
 
-def evalRead(path: str) -> Json:
+def evalRead(path: str, compatibilityCheck: bool = True) -> Json:
     data = read(path)
-    ensureSupportedManifest(data, path)
+    if compatibilityCheck:
+        ensureSupportedManifest(data, path)
     return eval(data, path)
diff --git a/cutekit/model.py b/cutekit/model.py
index b8ec441..3abf9a3 100644
--- a/cutekit/model.py
+++ b/cutekit/model.py
@@ -24,14 +24,16 @@ class Manifest:
     type: Type = Type.UNKNOWN
     path: str = ""
 
-    def __init__(self, json: Json = None, path: str = "", strict: bool = True, **kwargs: Any):
+    def __init__(
+        self, json: Json = None, path: str = "", strict: bool = True, **kwargs: Any
+    ):
         if json is not None:
-            if not "id" in json:
+            if "id" not in json:
                 raise RuntimeError("Missing id")
 
             self.id = json["id"]
 
-            if not "type" in json and strict:
+            if "type" not in json and strict:
                 raise RuntimeError("Missing type")
 
             self.type = Type(json["type"])
@@ -44,11 +46,7 @@ class Manifest:
             setattr(self, key, kwargs[key])
 
     def toJson(self) -> Json:
-        return {
-            "id": self.id,
-            "type": self.type.value,
-            "path": self.path
-        }
+        return {"id": self.id, "type": self.type.value, "path": self.path}
 
     def __str__(self):
         return f"Manifest(id={self.id}, type={self.type}, path={self.path})"
@@ -66,12 +64,12 @@ class Extern:
 
     def __init__(self, json: Json = None, strict: bool = True, **kwargs: Any):
         if json is not None:
-            if not "git" in json and strict:
+            if "git" not in json and strict:
                 raise RuntimeError("Missing git")
 
             self.git = json["git"]
 
-            if not "tag" in json and strict:
+            if "tag" not in json and strict:
                 raise RuntimeError("Missing tag")
 
             self.tag = json["tag"]
@@ -82,10 +80,7 @@ class Extern:
             setattr(self, key, kwargs[key])
 
     def toJson(self) -> Json:
-        return {
-            "git": self.git,
-            "tag": self.tag
-        }
+        return {"git": self.git, "tag": self.tag}
 
     def __str__(self):
         return f"Extern(git={self.git}, tag={self.tag})"
@@ -98,15 +93,16 @@ class ProjectManifest(Manifest):
     description: str = ""
     extern: dict[str, Extern] = {}
 
-    def __init__(self, json: Json = None, path: str = "", strict: bool = True, **kwargs: Any):
+    def __init__(
+        self, json: Json = None, path: str = "", strict: bool = True, **kwargs: Any
+    ):
         if json is not None:
-            if not "description" in json and strict:
+            if "description" not in json and strict:
                 raise RuntimeError("Missing description")
 
             self.description = json["description"]
 
-            self.extern = {k: Extern(v)
-                           for k, v in json.get("extern", {}).items()}
+            self.extern = {k: Extern(v) for k, v in json.get("extern", {}).items()}
         elif strict:
             raise RuntimeError("Missing json")
 
@@ -116,7 +112,7 @@ class ProjectManifest(Manifest):
         return {
             **super().toJson(),
             "description": self.description,
-            "extern": {k: v.toJson() for k, v in self.extern.items()}
+            "extern": {k: v.toJson() for k, v in self.extern.items()},
         }
 
     def __str__(self):
@@ -133,12 +129,12 @@ class Tool:
 
     def __init__(self, json: Json = None, strict: bool = True, **kwargs: Any):
         if json is not None:
-            if not "cmd" in json and strict:
+            if "cmd" not in json and strict:
                 raise RuntimeError("Missing cmd")
 
             self.cmd = json.get("cmd", self.cmd)
 
-            if not "args" in json and strict:
+            if "args" not in json and strict:
                 raise RuntimeError("Missing args")
 
             self.args = json.get("args", [])
@@ -151,11 +147,7 @@ class Tool:
             setattr(self, key, kwargs[key])
 
     def toJson(self) -> Json:
-        return {
-            "cmd": self.cmd,
-            "args": self.args,
-            "files": self.files
-        }
+        return {"cmd": self.cmd, "args": self.args, "files": self.files}
 
     def __str__(self):
         return f"Tool(cmd={self.cmd}, args={self.args}, files={self.files})"
@@ -172,14 +164,16 @@ class TargetManifest(Manifest):
     tools: Tools
     routing: dict[str, str]
 
-    def __init__(self, json: Json = None, path: str = "", strict: bool = True, **kwargs: Any):
+    def __init__(
+        self, json: Json = None, path: str = "", strict: bool = True, **kwargs: Any
+    ):
         if json is not None:
-            if not "props" in json and strict:
+            if "props" not in json and strict:
                 raise RuntimeError("Missing props")
 
             self.props = json["props"]
 
-            if not "tools" in json and strict:
+            if "tools" not in json and strict:
                 raise RuntimeError("Missing tools")
 
             self.tools = {k: Tool(v) for k, v in json["tools"].items()}
@@ -193,27 +187,34 @@ class TargetManifest(Manifest):
             **super().toJson(),
             "props": self.props,
             "tools": {k: v.toJson() for k, v in self.tools.items()},
-            "routing": self.routing
+            "routing": self.routing,
         }
 
     def __repr__(self):
         return f"TargetManifest({self.id})"
 
     def route(self, componentSpec: str):
-        return self.routing[componentSpec] if componentSpec in self.routing else componentSpec
+        return (
+            self.routing[componentSpec]
+            if componentSpec in self.routing
+            else componentSpec
+        )
 
     def cdefs(self) -> list[str]:
         defines: list[str] = []
 
+        def sanatize(s: str) -> str:
+            return s.lower().replace(" ", "_").replace("-", "_").replace(".", "_")
+
         for key in self.props:
-            macroname = key.lower().replace("-", "_")
             prop = self.props[key]
-            macrovalue = str(prop).lower().replace(" ", "_").replace("-", "_")
+            propStr = str(prop)
             if isinstance(prop, bool):
                 if prop:
-                    defines += [f"-D__ck_{macroname}__"]
+                    defines += [f"-D__ck_{sanatize(key)}__"]
             else:
-                defines += [f"-D__ck_{macroname}_{macrovalue}__"]
+                defines += [f"-D__ck_{sanatize(key)}_{sanatize(propStr)}__"]
+                defines += [f"-D__ck_{sanatize(key)}_value={propStr}"]
 
         return defines
 
@@ -227,17 +228,24 @@ class ComponentManifest(Manifest):
     provides: list[str] = []
     subdirs: list[str] = []
 
-    def __init__(self, json: Json = None, path: str = "", strict: bool = True, **kwargs: Any):
+    def __init__(
+        self, json: Json = None, path: str = "", strict: bool = True, **kwargs: Any
+    ):
         if json is not None:
             self.decription = json.get("description", self.decription)
             self.props = json.get("props", self.props)
-            self.tools = {k: Tool(v, strict=False)
-                          for k, v in json.get("tools", {}).items()}
+            self.tools = {
+                k: Tool(v, strict=False) for k, v in json.get("tools", {}).items()
+            }
             self.enableIf = json.get("enableIf", self.enableIf)
             self.requires = json.get("requires", self.requires)
             self.provides = json.get("provides", self.provides)
-            self.subdirs = list(map(lambda x: os.path.join(os.path.dirname(
-                path), x), json.get("subdirs", [""])))
+            self.subdirs = list(
+                map(
+                    lambda x: os.path.join(os.path.dirname(path), x),
+                    json.get("subdirs", [""]),
+                )
+            )
 
         super().__init__(json, path, strict, **kwargs)
 
@@ -250,7 +258,7 @@ class ComponentManifest(Manifest):
             "enableIf": self.enableIf,
             "requires": self.requires,
             "provides": self.provides,
-            "subdirs": self.subdirs
+            "subdirs": self.subdirs,
         }
 
     def __repr__(self):
@@ -258,15 +266,18 @@ class ComponentManifest(Manifest):
 
     def isEnabled(self, target: TargetManifest) -> tuple[bool, str]:
         for k, v in self.enableIf.items():
-            if not k in target.props:
-                logger.info(
-                    f"Component {self.id} disabled by missing {k} in target")
+            if k not in target.props:
+                logger.info(f"Component {self.id} disabled by missing {k} in target")
                 return False, f"Missing props '{k}' in target"
 
-            if not target.props[k] in v:
+            if target.props[k] not in v:
                 vStrs = [f"'{str(x)}'" for x in v]
                 logger.info(
-                    f"Component {self.id} disabled by {k}={target.props[k]} not in {v}")
-                return False, f"Props missmatch for '{k}': Got '{target.props[k]}' but expected {', '.join(vStrs)}"
+                    f"Component {self.id} disabled by {k}={target.props[k]} not in {v}"
+                )
+                return (
+                    False,
+                    f"Props missmatch for '{k}': Got '{target.props[k]}' but expected {', '.join(vStrs)}",
+                )
 
         return True, ""
diff --git a/cutekit/plugins.py b/cutekit/plugins.py
index e68c782..e1f8a75 100644
--- a/cutekit/plugins.py
+++ b/cutekit/plugins.py
@@ -23,11 +23,11 @@ def loadAll():
     logger.info("Loading plugins...")
 
     projectRoot = project.root()
-    
+
     if projectRoot is None:
         logger.info("Not in project, skipping plugin loading")
         return
-    
+
     pj = context.loadProject(projectRoot)
     paths = list(map(lambda e: os.path.join(const.EXTERN_DIR, e),  pj.extern.keys())) + ["."]