machines: porthos: add installation script

This is mostly to reference the installation process when looking back,
rather than explicitly be able re-install this exect configuration.

machines/porthos/install.sh

@@ -0,0 +1,55 @@
+#!/bin/sh
+
+SWAP_SIZE=16GiB
+
+parted /dev/sda --script -- \
+    mklabel msdos \
+    mkpart primary 512MiB -$SWAP_SIZE \
+    mkpart primary linux-swap -$SWAP_SIZE 100% \
+    mkpart ESP fat32 1MiB 512MiB \
+    set 3 esp on
+
+parted /dev/sdb --script -- \
+    mklabel gpt \
+    mkpart primary 0MiB 100%
+
+mkfs.ext4 -L media1 /dev/sda1
+mkfs.ext4 -L media2 /dev/sdb1
+
+pvcreate /dev/sda1
+pvcreate /dev/sdb1
+vgcreate lvm /dev/sda1 /dev/sdb1
+lvcreate -l 100%FREE -n media lvm
+
+mkfs.ext4 -L nixos /dev/mapper/lvm-media
+mkswap -L swap /dev/sda2
+mkfs.fat -F 32 -n boot /dev/sda3
+
+mount /dev/disk/by-label/nixos /mnt
+swapon /dev/sda2
+
+apt install sudo
+useradd -m -G sudo setupuser
+su setupuser
+
+cat << EOF
+# Run the following commands as setup user
+curl -L https://nixos.org/nix/install | sh
+. $HOME/.nix-profile/etc/profile.d/nix.sh
+nix-channel --add https://nixos.org/channels/nixos-20.09 nixpkgs
+sudo `which nixos-generate-config` --root /mnt
+
+# Change uuids to labels
+vim /mnt/etc/nixos/hardware-configuration.nix
+
+# Install system
+mkdir -p /mnt/home/ambroisie/git/nix/config
+cd /mnt/home/ambroisie/git/nix/config
+
+nix-env -iA nixos.git nixos.nixFlakes nixos.git-crypt
+git clone <this-repo> .
+# Assuming you set up GPG key correctly
+git crypt unlock
+
+nixos-install --root /mnt --flake '.#<hostname>'
+EOF