Introduce $MODULE_PATH usable in install step

armarx_setup/core/module/install.py

@@ -8,9 +8,6 @@ from armarx_setup.core.module.context import Hook
 from armarx_setup.core.util import commands, environ_context as env_ctx
 
 
-from armarx_setup import console
-
-
 class CMake(Hook):
 
     def install(self):
@@ -28,10 +25,16 @@ class Env(Hook):
         super().__init__(ctx=ctx)
 
         self.env: Dict[str, str] = kwargs
-        for k, v in self.env.items():
+        for k in self.env:
+            v = self.env[k]
+
             if not (isinstance(k, str) and isinstance(v, str)):
                 raise error.ArmarXSetupError(f"Invalid env entry: '{k}': '{v}'")
 
+            v = v.replace("$MODULE_PATH", self.ctx.path)
+            self.env[k] = v
+
+
     def install(self):
         for k, v in self.env.items():
             self.ctx.module.ws.env_file.add(k, v, by=self.ctx.module.name, write=False)