Add treefmt

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

hosts/installer/README.md

@@ -8,21 +8,23 @@ I have automated myself out of a job. How to use:
 
 3. Connect to the internet with `nmcli`
 
-  - Scan for available networks:
+- Scan for available networks:
 
-    ```bash
-    nmcli device wifi list
-    ```
-  - For an open network:
+  ```bash
+  nmcli device wifi list
+  ```
 
-    ```bash
-    nmcli device wifi connect "<SSID>"
-    ```
-  - For a secured network:
+- For an open network:
 
-    ```bash
-    nmcli device wifi connect "<SSID>" password "<password>"
-    ```
+  ```bash
+  nmcli device wifi connect "<SSID>"
+  ```
+
+- For a secured network:
+
+  ```bash
+  nmcli device wifi connect "<SSID>" password "<password>"
+  ```
 
 4. Run `sudo nix-install /etc/nixos -m install|repair -h host [-k key] [-c] [-r]"`
 
@@ -30,48 +32,49 @@ I have automated myself out of a job. How to use:
 
 1. Download a Minimal Live Nix ISO
 
-  - Visit the official NixOS website: [https://nixos.org/download.html](https://nixos.org/download.html).
-  - Download the "Minimal ISO image".
+- Visit the official NixOS website: [https://nixos.org/download.html](https://nixos.org/download.html).
+- Download the "Minimal ISO image".
 
 2. Burn the ISO
 
-  - On Windows, use [Rufus](https://rufus.ie) to burn the ISO to a USB drive.
+- On Windows, use [Rufus](https://rufus.ie) to burn the ISO to a USB drive.
 
-  - On Linux, use the `dd` command:
+- On Linux, use the `dd` command:
 
-    ```bash
-    sudo dd if=<path-to-iso> of=/dev/sdX bs=4M status=progress
-    ```
+  ```bash
+  sudo dd if=<path-to-iso> of=/dev/sdX bs=4M status=progress
+  ```
 
 3. Boot into USB
 
 4. Connect to the Internet with `wpa_supplicant`
 
-  - Identify your network interface:
+- Identify your network interface:
 
-    ```bash
-    ip link show | grep -E '^[0-9]+:' | awk '{print $2}' | tr -d ':'
-    ```
-  - For an open network:
+  ```bash
+  ip link show | grep -E '^[0-9]+:' | awk '{print $2}' | tr -d ':'
+  ```
 
-    ```bash
-    wpa_supplicant -i "${interface}" -c <(wpa_passphrase "${ssid}") -B
-    ```
+- For an open network:
 
-  - For a secured network:
+  ```bash
+  wpa_supplicant -i "${interface}" -c <(wpa_passphrase "${ssid}") -B
+  ```
 
-    ```bash
-    config=$(mktemp)
-    wpa_passphrase "${ssid}" "${passphrase}" > "${config}"
-    wpa_supplicant -i "${interface}" -c "${config}" -B
-    rm "${config}"
-    ```
+- For a secured network:
 
-  - Obtain an IP address:
+  ```bash
+  config=$(mktemp)
+  wpa_passphrase "${ssid}" "${passphrase}" > "${config}"
+  wpa_supplicant -i "${interface}" -c "${config}" -B
+  rm "${config}"
+  ```
 
-    ```bash
-    dhcpcd
-    ```
+- Obtain an IP address:
+
+  ```bash
+  dhcpcd
+  ```
 
 5. Clone the flake repository