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fix Including a derivation using callPackage

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The example didn't use pkgs.
This commit is contained in:
worldofpeace 2019-03-24 05:33:07 -04:00
parent 94a409450a
commit 0ccfebf9f2
1 changed files with 5 additions and 6 deletions
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11
doc/languages-frameworks/python.section.md
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@ -433,7 +433,7 @@ Let's split the package definition from the environment definition.
We first create a function that builds `toolz` in `~/path/to/toolz/release.nix` We first create a function that builds `toolz` in `~/path/to/toolz/release.nix`
```nix ```nix
{ lib, pkgs, buildPythonPackage }: { lib, buildPythonPackage }:
buildPythonPackage rec { buildPythonPackage rec {
pname = "toolz"; pname = "toolz";
@ -453,18 +453,17 @@ buildPythonPackage rec {
} }
``` ```
It takes two arguments, `pkgs` and `buildPythonPackage`. It takes an argument `buildPythonPackage`.
We now call this function using `callPackage` in the definition of our environment We now call this function using `callPackage` in the definition of our environment
```nix ```nix
with import <nixpkgs> {}; with import <nixpkgs> {};
( let ( let
toolz = pkgs.callPackage /path/to/toolz/release.nix { toolz = callPackage /path/to/toolz/release.nix {
pkgs = pkgs; buildPythonPackage = python35Packages.buildPythonPackage;
buildPythonPackage = pkgs.python35Packages.buildPythonPackage;
}; };
in pkgs.python35.withPackages (ps: [ ps.numpy toolz ]) in python35.withPackages (ps: [ ps.numpy toolz ])
).env ).env
``` ```