···

       
22
       
 
       
```

     

       
23
       
 
       


     

       
24
       
 
       
## overlays

     

       
25
       
-
       
overlays are useful when you want to refer to refer to a package globally.

     

       
26
       
 
       


     

       
27
       
 
       
the gist of overlays is as thus:

     

       
28
       
 
       


     

       
29
       
-
       
> overlay is just `prev: final: {}` functions where dumbed down idea is

     

       
30
       
 
       
> that you do pkg = prev.pkg.override and refer to everything else from

     

       
31
       
 
       
> final

     

       
32
       
 
       
>

     
···

       
35
       
 
       


     

       
36
       
 
       
(poorly made) example overlays can be found [here](https://github.com/soopyc/nixos-config/blob/master/overlays/discord-canary.nix)

     

       
37
       
 
       


     

       
38
       
-
       
*note: replace `self: super:` with `prev: final:` for consistency*

     

       
39
       
 
       


     

       
40
       
 
       
*concept and content by \@natsukagami*

     

       
41
       
 
       


     

···

       
22
       
 
       
```

     

       
23
       
 
       


     

       
24
       
 
       
## overlays

     

       
25
       
+
       
overlays are useful when you want to refer to a package globally.

     

       
26
       
 
       


     

       
27
       
 
       
the gist of overlays is as thus:

     

       
28
       
 
       


     

       
29
       
+
       
> overlay is just `final: pref: {}` functions where dumbed down idea is

     

       
30
       
 
       
> that you do pkg = prev.pkg.override and refer to everything else from

     

       
31
       
 
       
> final

     

       
32
       
 
       
>

     
···

       
35
       
 
       


     

       
36
       
 
       
(poorly made) example overlays can be found [here](https://github.com/soopyc/nixos-config/blob/master/overlays/discord-canary.nix)

     

       
37
       
 
       


     

       
38
       
+
       
*note: replace `self: super:` with `final: prev:` for consistency*

     

       
39
       
 
       


     

       
40
       
 
       
*concept and content by \@natsukagami*

     

       
41