feat(jnml): install in standard dirs

Author: sanjayankur31

omv/engines/getjnml.py

@@ -1,13 +1,30 @@
 import os
+import platform
 from subprocess import check_output
+from pathlib import Path
 
 from omv.engines.utils.wdir import working_dir
 
+
 def install_jnml():
 
     version='v0.12.2'
 
-    jnmlpath = os.path.join(os.environ['HOME'],'jnml')
+    try:
+        jnmlhome = os.environ['JNML_HOME']
+        jnmlpath = Path(jnmlhome).parent
+    except KeyError:
+        osname = platform.system()
+        if osname == "Linux":
+            try:
+                jnmlpath = os.path.join(os.environ['XDG_DATA_HOME'],'jnml')
+            except KeyError:
+                jnmlpath = os.path.join(os.environ['HOME'],'.local/share/jnml')
+        elif osname == "Darwin":
+            jnmlpath = os.path.join(os.environ['HOME'],'Library/jnml')
+        else:
+            jnmlpath = os.path.join(os.environ['HOME'],'jnml')
+
     if not os.path.isdir(jnmlpath):
         os.mkdir(jnmlpath)
     with working_dir(jnmlpath):