···

       
436
       
436
       
 
       
We first create a function that builds `toolz` in `~/path/to/toolz/release.nix`

     

       
437
       
437
       
 
       


     

       
438
       
438
       
 
       
```nix

     

       
439
       
439
       
-
       
{ pkgs, buildPythonPackage }:

     

       
439
       
439
       
+
       
{ lib, pkgs, buildPythonPackage }:

     

       
440
       
440
       
 
       


     

       
441
       
441
       
 
       
buildPythonPackage rec {

     

       
442
       
442
       
 
       
  pname = "toolz";

     
···

       
447
       
447
       
 
       
    sha256 = "43c2c9e5e7a16b6c88ba3088a9bfc82f7db8e13378be7c78d6c14a5f8ed05afd";

     

       
448
       
448
       
 
       
  };

     

       
449
       
449
       
 
       


     

       
450
       
450
       
-
       
  meta = {

     

       
450
       
450
       
+
       
  meta = with lib; {

     

       
451
       
451
       
 
       
    homepage = "http://github.com/pytoolz/toolz/";

     

       
452
       
452
       
 
       
    description = "List processing tools and functional utilities";

     

       
453
       
453
       
 
       
    license = licenses.bsd3;