l install-system: init helper script to install systems

lass/5pkgs/install-system/default.nix

@@ -0,0 +1,26 @@
+{ pkgs }:
+pkgs.writers.writeDashBin "install-system" ''
+  set -efux
+  SYSTEM=$1
+  TARGET=$2
+  # format
+  if ! (sshn "$TARGET" -- mountpoint /mnt); then
+    nix run github:numtide/nixos-remote -- --stop-after-disko --store-paths "$(nix-build --no-out-link -I stockholm="$HOME"/sync/stockholm -I nixos-config="$HOME"/sync/stockholm/lass/1systems/"$SYSTEM"/physical.nix '<nixpkgs/nixos>' -A config.system.build.diskoNoDeps)" /dev/null "$TARGET"
+  fi
+
+  # install dependencies
+  sshn "$TARGET" << SSH
+    nix-channel --update
+    nix-env -iA nixos.git
+  SSH
+
+  # populate
+  $(nix-build --no-out-link "$HOME"/sync/stockholm/lass/krops.nix -A populate --argstr name "$SYSTEM" --argstr target "$TARGET"/mnt/var/src --arg force true)
+
+  # install
+  sshn "$TARGET" << SSH
+    ln -s /mnt/var/src /var/src
+    NIXOS_CONFIG=/var/src/nixos-config nixos-install --no-root-password -I /var/src
+    zpool export -fa
+  SSH
+''