How to install nixos on a macbook pro dual boot (mid-2012 model)

nixos-mbp-dual-boot-instructions.txt

Step 0: Download unetbootin and the latest nixos iso, put nixos iso onto unetbootin
Step 1: On OSX, Resize your OSX partition using disk utility (leave 25% - 75% as free space)
Step 2: Boot into NixOS from USB (hold down Alt-Option)
Step 3: Use fdisk to create 3 new partitions (nixosswap ~10GB, nixoshome ~75GB, nixosroot ~20GB)
Step 4: Init file systems / swaps
        # mkfs.ext4 -L nixosroot /dev/sda4
        # mkswap -L nixosswap /dev/sda5
        # mkfs.ext4 -L nixoshome /dev/sda6 
Step 5: Mount
        # mount /dev/sda4 /mnt
        # mkdir /mnt/boot
        # mount /dev/sda1 /mnt/boot
        # swapon /dev/disk/by-label/nixosswap
Step 6: Generate
        # nixos-generate-config --root /mnt
Step 7: Install
        # nixos-install
        
For more: https://github.com/mbbx6spp/mbp-nixos