Only import from conda if current_repodata is generated

conda_index/_vendor/constants.py

@@ -0,0 +1,25 @@
+"""
+From conda.base.constants
+"""
+
+KNOWN_SUBDIRS = (
+    "noarch",
+    "emscripten-wasm32",
+    "wasi-wasm32",
+    "freebsd-64",
+    "linux-32",
+    "linux-64",
+    "linux-aarch64",
+    "linux-armv6l",
+    "linux-armv7l",
+    "linux-ppc64",
+    "linux-ppc64le",
+    "linux-riscv64",
+    "linux-s390x",
+    "osx-64",
+    "osx-arm64",
+    "win-32",
+    "win-64",
+    "win-arm64",
+    "zos-z",
+)

conda_index/_vendor/exceptions.py

@@ -0,0 +1,11 @@
+"""
+Exception needed by models/version.py
+"""
+
+
+class InvalidVersionSpec(ValueError):
+    def __init__(self, invalid_spec: str, details: str):
+        self.invalid_spec = invalid_spec
+        self.details = details
+        message = "Invalid version '%(invalid_spec)s': %(details)s"
+        super().__init__(message)