Add dep nexus. Add comments; reasons, and future work.

meta.yaml

@@ -10,10 +10,13 @@ build:
 
 requirements:
   host:
-    #- python # =3.8.*
+    #- python 
     #- pip
+
   run:
-    - python
+    # everything should be probably be pinned
+    #3.8.3 is the highest that allows tk8.6.9
+    - python =3.8  
 
     # PASSCAL software
     - batch2par    #2020.209
@@ -28,13 +31,18 @@ requirements:
     - julday    #2020.188    
     - logpeek    #2020.223    
     - lopt    #2020.205    
+    - nexus #2020.225rc1
     - mseedpeek    #2020.204
     - pql    #2020.100.0rc1    
     - qpeek    #2020.220    
     - refscrub    #2020.216 
+    # This should be pinned by logpeek, qpeek,...
     #- tk    8.6.9        
     - tkeqcut    #2020.216        
 
+    # Obspy should probably behere and pinned
+    #-obspy #
+
     # DMC software
       # C
     - msi    #3.8