Commit f8f04a97 authored by Doron Behar's avatar Doron Behar
Browse files

doc/python: simplify packageOverrides example

parent bfa489d7

doc/languages-frameworks/python.section.md

+17 −23
Original line number Diff line number Diff line
@@ -293,29 +293,23 @@ the overrides for packages in the package set. 
```nix

with import <nixpkgs> { };



(

  let

    python =

let

  python = pkgs.python3.override {

    packageOverrides = self: super: {

          pandas = super.pandas.overridePythonAttrs (old: rec {

      pandas = super.pandas.overridePythonAttrs (

        finalAttrs: prevAttrs: {

          version = "0.19.1";

          src = fetchPypi {

            pname = "pandas";

              inherit version;

            inherit (finalAttrs) version;

            hash = "sha256-JQn+rtpy/OA2deLszSKEuxyttqBzcAil50H+JDHUdCE=";

          };

          });

        }

      );

    };

      in

      pkgs.python3.override {

        inherit packageOverrides;

        self = python;

  };



in

  python.withPackages (ps: [ ps.blaze ])

).env

(python.withPackages (ps: [ ps.blaze ])).env

```



The next example shows a non trivial overriding of the `blas` implementation to