Fetch Crusoe locations dynamically instead of hardcoding

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: peterschmidt85

src/dstack/_internal/core/backends/crusoe/configurator.py

@@ -16,8 +16,6 @@
 from dstack._internal.core.backends.crusoe.resources import CrusoeClient
 from dstack._internal.core.models.backends.base import BackendType
 
-KNOWN_LOCATIONS = {"us-east1-a", "us-southcentral1-a", "eu-iceland1-a", "us-west1-a"}
-
 
 class CrusoeConfigurator(
     Configurator[
@@ -38,13 +36,16 @@ def validate_config(self, config: CrusoeBackendConfigWithCreds, default_creds_en
                 details=str(e),
             )
         if config.regions:
-            invalid = set(config.regions) - KNOWN_LOCATIONS
+            try:
+                available = set(client.list_locations())
+            except Exception:
+                return
+            invalid = set(config.regions) - available
             if invalid:
                 raise_invalid_credentials_error(
                     fields=[["regions"]],
                     details=(
-                        f"Unknown regions: {sorted(invalid)}."
-                        f" Valid regions: {sorted(KNOWN_LOCATIONS)}"
+                        f"Unknown regions: {sorted(invalid)}. Valid regions: {sorted(available)}"
                     ),
                 )
 

src/dstack/_internal/core/backends/crusoe/resources.py

@@ -136,6 +136,12 @@ def list_quotas(self) -> List[dict]:
         resp = self._request("GET", self._project_path("/quotas"))
         return resp.json().get("quotas", [])
 
+    # --- Location operations ---
+
+    def list_locations(self) -> List[str]:
+        resp = self._request("GET", "/locations")
+        return resp.json().get("items", [])
+
     # --- IB operations ---
 
     def list_ib_networks(self) -> List[dict]: