execute nix-build remote

remote-build.sh

#!/usr/bin/env bash

host="$1"
branch="$2"
pkg="$3"
remote_dir="$$"

[[ -z "$host" ]]    && { echo "no HOST"; exit 1; }
[[ -z "$branch" ]]  && { echo "no branch"; exit 1; }
[[ -z "$pkg" ]]     && { echo "no pkg"; exit 1; }

ssh "$host" -- "mkdir /tmp/$remote_dir"
git archive --format=tgz "$branch" | ssh "$host" "tar -C /tmp/$remote_dir -xvzf -"
ssh "$host" -- "cd /tmp/$remote_dir && nix-build -A $pkg"
echo ready
echo "See: /tmp/$remote_dir"