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docs: split out "Install nix" section

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Martin Toman 2022-08-06 10:02:07 -07:00
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docs/src/guides/getting-started-python.md
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This guide walks you through the process of setting up nix for your project using dream2nix. This will allow your project's build and dev-environment to be reproduced by machines of other developers or CI systems with high accuracy.
## Install nix
If you don't have nix already, check out [nixos.org/download.html](https://nixos.org/download.html) on how to install it.
## Enable the nix flakes feature
For internal dependency management dream2nix requires the experimental nix feature `flakes` being enabled.
```
export NIX_CONFIG="extras-experimental-features = flakes nix-command"
```
If you find yourself using dream2nix regularly, you can permanently save these settings by adding the following line to your `/etc/nix/nix.conf`:
```
experimental-features = flakes nix-command
```
{{#include ../install-nix.md}}
## Navigate to your python project
In this example I will clone the python project [`httpie`](https://github.com/httpie/httpie) to `/tmp/my_project` as an example.

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## Install nix
If you don't have nix already, check out [nixos.org/download.html](https://nixos.org/download.html) on how to install it.
## Enable the nix flakes feature
For internal dependency management dream2nix requires the experimental nix feature `flakes` being enabled.
```
export NIX_CONFIG="extras-experimental-features = flakes nix-command"
```
If you find yourself using dream2nix regularly, you can permanently save these settings by adding the following line to your `/etc/nix/nix.conf`:
```
experimental-features = flakes nix-command
```