This action will generate two primary files: `flake.nix` and `.clan-flake`.
```bash
$ ls -la
drwx------ joerg users 5 B a minute ago ./
drwxrwxrwt root root 139 B 12 seconds ago ../
.rw-r--r-- joerg users 77 B a minute ago .clan-flake
.rw-r--r-- joerg users 4.8 KB a minute ago flake.lock
.rw-r--r-- joerg users 242 B a minute ago flake.nix
```
### Understanding the .clan-flake Marker File
The `.clan-flake` marker file serves an optional purpose: it helps the `clan-cli` utility locate the project's root directory.
If `.clan-flake` is missing, `clan-cli` will instead search for other indicators like `.git`, `.hg`, `.svn`, or `flake.nix` to identify the project root.
Absolutely, let's break down the migration step by step, explaining each action in detail:
#### Before You Begin
1.**Backup Your Current Configuration**: Always start by making a backup of your current NixOS configuration to ensure you can revert if needed.
```shell
cp -r /etc/nixos ~/nixos-backup
```
2.**Update Flake Inputs**: The patch adds a new input named `clan-core` to your `flake.nix`. This input points to a Git repository for Clan Core. Here's the addition:
-`url`: Specifies the Git repository URL for Clan Core.
-`inputs.nixpkgs.follows`: Tells Nix to use the same `nixpkgs` input as your main input (in this case, it follows `nixpkgs`).
3.**Update Outputs**: Then modify the `outputs` section of your `flake.nix` to adapt to Clan Core's new provisioning method. The key changes are as follows:
4.**Rebuild and Switch**: Rebuild your NixOS configuration using the updated flake:
```shell
sudo nixos-rebuild switch --flake .
```
- This command rebuilds and switches to the new configuration. Make sure to include the `--flake .` argument to use the current directory as the flake source.
5.**Test Configuration**: Before rebooting, verify that your new configuration builds without errors or warnings.
6.**Reboot**: If everything is fine, you can reboot your system to apply the changes:
7.**Verify**: After the reboot, confirm that your system is running with the new configuration, and all services and applications are functioning as expected.
By following these steps, you've successfully migrated your NixOS Flake configuration to include the `clan-core` input and adapted the `outputs` section to work with Clan Core's new machine provisioning method.