optional jsonnet

kapitan/targets.py

@@ -31,7 +31,7 @@
 from kapitan.inputs.external import External
 from kapitan.remoteinventory.fetch import fetch_inventories, list_sources
 from kapitan.resources import inventory_reclass
-from kapitan.utils import dictionary_hash, directory_hash, hashable_lru_cache
+from kapitan.utils import dictionary_hash, directory_hash, hashable_lru_cache, JSONNET_AVAILABLE
 from kapitan.validator.kubernetes_validator import KubernetesManifestValidator
 
 from reclass.errors import NotFoundError, ReclassException
@@ -40,9 +40,7 @@
 
 
 def check_jsonnet_import():
-    try:
-        import _gojsonnet
-    except ImportError:
+    if not JSONNET_AVAILABLE:
         logger.info(
             "Note: jsonnet is not yet supported on ARM/M1. You can still use kadet and jinja2 for templating"
         )

kapitan/utils.py

@@ -21,7 +21,16 @@
 from functools import lru_cache, wraps
 from hashlib import sha256
 
-import _gojsonnet as jsonnet
+JSONNET_AVAILABLE = True
+try:
+    import _gojsonnet as jsonnet
+    logging.debug('Using GO jsonnet over C jsonnet')
+except ImportError:
+    try:
+        import _jsonnet as jsonnet
+    except ImportError:
+        JSONNET_AVAILABLE = False
+
 import jinja2
 import requests
 import yaml
@@ -39,11 +48,6 @@
 
 logger = logging.getLogger(__name__)
 
-try:
-    import _jsonnet as jsonnet
-except ImportError as e:
-    logger.debug("Could not import jsonnet: %s", e)
-
 
 try:
     from yaml import CSafeLoader as YamlLoader

requirements.txt

@@ -1,5 +1,5 @@
 # kapitan dependencies
-gojsonnet==0.17.0
+jsonnet==0.16.0
 pyyaml>=5.3.1
 toml==0.10.1
 Jinja2>=2.11.2

setup.py

@@ -75,4 +75,7 @@ def install_deps():
             "kapitan=kapitan.cli:main",
         ],
     },
+    extras_require={
+        "gojsonnet": ["gojsonnet==0.17.0"]
+    }
 )