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#! /bin/sh
#
# nixos-fetch-git : nixos-config -> ...
#
set -euf
host=$1
target=root@$host
git_rev=$(nixos-query "$host" nixpkgs.rev)
git_url=$(nixos-query "$host" nixpkgs.url)
worktree=$nixpkgs_root/$host
if [ ! -d "$worktree" ]; then
mkdir -p "$worktree"
fi
cd "$worktree"
git init -q
if ! current_url=$(git config remote.src.url); then
git remote add src "$git_url"
elif [ "$current_url" != "$git_url" ]; then
git remote set-url src "$git_url"
fi
git fetch src
git checkout "$git_rev"
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