nixcfg/cluster/prod/app/cryptpad/build/README.md

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# CryptPad for NixOS with Deuxfleurs flavour
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## Building
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The `default.nix` file follows the nixpkgs `callPackage` convention for fetching dependencies, so you need to either:
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- Run `nix-build --expr '{ ... }@args: (import <nixpkgs> {}).callPackage ./default.nix args'`
- Do the `callPackage from a higher-level directory importing your package`
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### Docker
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The `docker.nix` derives into a Docker image you can load simply by running:
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```shell
docker load -i $(nix-build docker.nix)
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```
You can then test the built Docker image using the provided `docker-compose.yml` and `config.js` files, which are
configured to render the instance accessible at `http://localhost:3000` with data stored into the `_data` folder.
### Deuxfleurs flavour
The `deuxfleurs.nix` file derives into two derivations: The CryptPad derivation itself and a Docker image,
which can be choose by passing the `-A [name]` flags to `nix-build`
For example, to build and load the Deuxfleurs-flavoured CryptPad Docker image, you run:
```shell
docker load -i $(nix-build deuxfleurs.nix -A docker)
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```
## OnlyOffice integration
Apart for `deuxfleurs.nix`, both `default.nix` and `docker.nix` files build CryptPad with a copy of OnlyOffice pre-built and
used by CryptPad, which can result to large Docker image (~2.6GiB)
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This behaviour is configurable by passing the `--arg withOnlyOffice false` flag to `nix-build` when building them.
## Updating the Deuxfleurs pinned nixpkgs
The pinned sources files are generated with the [npins](https://github.com/andir/npins) tool.
To update the pinned nixpkgs, you simply run the following command:
```shell
npins update
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```
To modify the pinned nixpkgs, remove it and re-add it using the new target, for exemple for `nixos-unstable`:
```shell
npins remove nixpkgs
npins add --name nixpkgs channel nixos-unstable
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```