How to get aliasing working?

snapcraft
1

I asked a question on Ask Ubuntu about how to make snaps depend on each other, which it seems is not possible. The only answer so far referred me to using aliases. However I cannot get them to work.

I’ve modified the example in the first post I referred to as follows:

apps:
  ui:
    command: ui
    aliases: [ui]

  server:
    command: server
    aliases: [server]

  bar:
    command: bar
    aliases: [bar]

I’ve updated the snap using snapcraft and I’ve installed it using the --devmode --dangerous flags, but I don’t see any of these commands being automatically aliased. Am I missing something?

2

I’m not sure aliases solve the reference problems, it depends how things are invoked, usually snap commands should invoke each other using internal names, the external commands/names are not always available.

That post about aliases is out-of-date as well, this has information about more recent changes/workings: Improving the aliases implementation

1 Like
3

should invoke each other using internal names

So in the example I referred to, the server should be able to see the bar application by just invoking it with bar right?

UPDATE: apparently server cannot spawn bar, I get a “permission denied” error.

4

I don’t remember what’s the status quo, it’s likely that /snap/bin is in the PATH but is not useful internally because of the access issues you mentioned. Not sure what’s the intention here. Somebody else can chime in on that.

5

I just saw that I cannot execute bar manualy because of a permission denied problem. I’m downloading the zip file of the application to see if the command referred in my snapcraft.yaml configuration does not have the right permissions…

6

I’m downloading the zip file of the application to see if the command referred in my snapcraft.yaml configuration does not have the right permissions…

No it doesn’t :frowning: The other problem ahead I see is that the executable contains some shared libraries packaged with it, and I’m not sure how or if snap handles that:

  inflating: bin/com.microsoft.z3.jar  
  inflating: bin/libz3.a             
  inflating: bin/libz3.so            
  inflating: bin/libz3java.so        
  inflating: bin/Microsoft.Z3.dll    
  inflating: bin/Microsoft.Z3.xml    
   creating: bin/python/
  inflating: bin/python/example.py   
   creating: bin/python/z3/
  inflating: bin/python/z3/z3.py     
  inflating: bin/python/z3/z3.pyc    
  inflating: bin/python/z3/z3consts.py  
  inflating: bin/python/z3/z3consts.pyc  
  inflating: bin/python/z3/z3core.py  
  inflating: bin/python/z3/z3core.pyc  
  inflating: bin/python/z3/z3num.py  
  inflating: bin/python/z3/z3num.pyc  
  inflating: bin/python/z3/z3poly.py  
  inflating: bin/python/z3/z3poly.pyc  
  inflating: bin/python/z3/z3printer.py  
  inflating: bin/python/z3/z3printer.pyc  
  inflating: bin/python/z3/z3rcf.py  
  inflating: bin/python/z3/z3rcf.pyc  
  inflating: bin/python/z3/z3types.py  
  inflating: bin/python/z3/z3types.pyc  
  inflating: bin/python/z3/z3util.py  
  inflating: bin/python/z3/z3util.pyc  
  inflating: bin/python/z3/__init__.py  
  inflating: bin/python/z3/__init__.pyc  
  inflating: bin/z3                  
   creating: include/
  inflating: include/z3++.h          
  inflating: include/z3.h            
  inflating: include/z3_algebraic.h  
  inflating: include/z3_api.h        
  inflating: include/z3_ast_containers.h  
  inflating: include/z3_fixedpoint.h  
  inflating: include/z3_fpa.h        
  inflating: include/z3_interp.h     
  inflating: include/z3_macros.h     
  inflating: include/z3_optimization.h  
  inflating: include/z3_polynomial.h  
  inflating: include/z3_rcf.h        
  inflating: include/z3_spacer.h     
  inflating: include/z3_v1.h         
  inflating: LICENSE.txt