build exec conditional

myst_libre/builders/myst_builder.py

@@ -2,22 +2,33 @@
 from myst_libre.abstract_class import AbstractClass
 
 class MystBuilder(AbstractClass):
-    def __init__(self, hub):
-        if not isinstance(hub, JupyterHubLocalSpawner):
-            raise TypeError(f"Expected 'hub' to be an instance of JupyterHubLocalSpawner, got {type(hub).__name__} instead")
+    def __init__(self, hub=None, build_dir=None):
+        if hub is not None:
+            if not isinstance(hub, JupyterHubLocalSpawner):
+                raise TypeError(f"Expected 'hub' to be an instance of JupyterHubLocalSpawner, got {type(hub).__name__} instead")
+            self.hub = hub
+            self.env_vars = {
+                "JUPYTER_BASE_URL": f"{self.hub.jh_url}",
+                "JUPYTER_TOKEN": f"{self.hub.jh_token}",
+                "port": f"{self.hub.port}"
+            }
+            self.build_dir = self.hub.rees.build_dir
+        else:
+            if build_dir is None:
+                raise ValueError("If 'hub' is None, 'build_dir' must be provided")
+            self.build_dir = build_dir
+            self.env_vars = {}
+            self.hub = None
+
         super().__init__()
-        self.env_vars = {}
-        self.build_dir = ""
-        self.hub = hub
-        self.env_vars = {"JUPYTER_BASE_URL":f"{self.hub.jh_url}",
-                         "JUPYTER_TOKEN":f"{self.hub.jh_token}",
-                         "port":f"{self.hub.port}"
-                         }
-        self.myst_client = MystMD(hub.rees.build_dir, self.env_vars)
+        self.myst_client = MystMD(self.build_dir, self.env_vars)
 
     def setenv(self,key,value):
         self.env_vars[key] = value
 
     def build(self,*args):
-        self.cprint(f'Starting MyST build {self.hub.jh_url}','yellow')
+        if self.hub is not None:
+            self.cprint(f'Starting MyST build {self.hub.jh_url}','yellow')
+        else:
+            self.cprint(f'Starting MyST build no exec.','yellow')
         self.myst_client.build('build',*args)