Add python var and lib var

pym/calculate/lib/variables/env.py

@@ -21,8 +21,10 @@ from itertools import *
 from calculate.lib.datavars import (TableVariable, Variable, ReadonlyVariable,
                                     VariableError, ReadonlyTableVariable,
                                     FieldValue, HumanReadable)
-from calculate.lib.utils.files import listDirectory, process, PIPE, pathJoin
-from calculate.lib.utils.portage import isPkgInstalled, RepositoryPath
+from calculate.lib.utils.files import (listDirectory, process, PIPE, pathJoin,
+                                    readFileEx)
+from calculate.lib.utils.portage import (isPkgInstalled, RepositoryPath,
+                                    getInstalledAtom)
 from calculate.lib.utils.common import cmpVersion
 from calculate.lib.datavars import DataVars
 from itertools import dropwhile
@@ -796,3 +798,37 @@ class VariableClClientType(ReadonlyVariable):
     Тип клиента получающего информацию от core
     """
     value = ""
+
+class VariableOsLibPath(ReadonlyVariable):
+    """
+    Использовать lib или lib64
+    """
+    def get(self):
+        if self.Get('os_arch_machine') == 'x86_64':
+            return "lib64"
+        else:
+            return "lib"
+
+class VariableOsPython(ReadonlyVariable):
+    """
+    Путь до модулей синхронизации
+    """
+    def get_root(self):
+        return "/"
+
+    def get_usrlib(self):
+        return "/usr/%s" % self.Get('os_lib_path')
+
+    def get(self):
+        chroot_path = self.get_root()
+        pythons = readFileEx(pathJoin(chroot_path,
+            "/etc/python-exec/python-exec.conf"), grab=True).split()
+        if pythons:
+            for python in pythons:
+                libpath = self.get_usrlib()
+                if path.exists(pathJoin(chroot_path, libpath, python)):
+                    return python
+        for atom in sorted(
+            getInstalledAtom("dev-lang/python",prefix=chroot_path),
+            reverse=True):
+            return "python{SLOT}".format(**atom)