updater needs to take care not only started from an env (#1543)

* fix updater for none env calls

* prepare v7.0.4

Author: ReimarBauer

CHANGES.rst

@@ -2,6 +2,16 @@ Changelog
 =========
 
 
+Version 7.0.4
+~~~~~~~~~~~~~
+
+Bug fix release
+
+All changes:
+https://github.com/Open-MSS/MSS/milestone/88?closed=1
+
+
+
 Version 7.0.3
 ~~~~~~~~~~~~~
 

mslib/utils/qt.py

@@ -448,15 +448,18 @@ def __init__(self, parent=None):
         self.old_version = None
         # we are using the installer version of the env
         self.conda_prefix = os.getenv("CONDA_PREFIX")
-        self.command = os.path.join(self.conda_prefix, 'bin', "conda")
-        mamba_cmd = os.path.join(self.conda_prefix, 'bin', 'mamba')
-        # Check if mamba is installed in the env
-        try:
-            subprocess.run([mamba_cmd], startupinfo=subprocess_startupinfo(),
-                           stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
-            self.command = mamba_cmd
-        except FileNotFoundError:
-            pass
+        if self.conda_prefix is not None:
+            self.command = os.path.join(self.conda_prefix, 'bin', "conda")
+            mamba_cmd = os.path.join(self.conda_prefix, 'bin', 'mamba')
+            # Check if mamba is installed in the env
+            try:
+                subprocess.run([mamba_cmd], startupinfo=subprocess_startupinfo(),
+                               stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+                self.command = mamba_cmd
+            except FileNotFoundError:
+                pass
+        else:
+            self.command = "conda"
 
         # pyqtSignals don't work without an application eventloop running
         if QtCore.QCoreApplication.startingUp():

mslib/version.py

@@ -24,4 +24,4 @@
     See the License for the specific language governing permissions and
     limitations under the License.
 """
-__version__ = u'7.0.3.'
+__version__ = u'7.0.4.'