add rebuild script

rebuild.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+set -e
+pushd ~/.nix
+nvim flake.nix
+alejandra . &>/dev/null
+git diff -U0 *.nix
+echo "nixos rebuilding..."
+sudo nixos-rebuild switch --flake ~/.nix#snowbelle &>nixos-switch.log || (
+ cat nixos-switch.log | grep --color error && false)
+gen=$(nixos-rebuild list-generations | grep current)
+git commit -am "$gen"
+popd