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#!/usr/bin/env sh
# Bootstrap a headless dev environment on a fresh Ubuntu 22.04 VM.
# Idempotent: safe to re-run.
#
# curl -fsSL https://raw.githubusercontent.com/<user>/dotfiles/master/remote-dev/bootstrap.sh | sh
#
# Steps:
# 1. Install Nix (Determinate Systems installer, multi-user).
# 2. Clone (or fast-forward) the dotfiles repo to ~/.local/share/dotfiles.
# 3. Run `home-manager switch --flake .../remote-dev#vm`.
# 4. Add Nix-store zsh to /etc/shells and chsh the user.
#
# Environment overrides:
# DOTFILES_REPO Git URL (default: https://github.com/ruifm/dotfiles)
# DOTFILES_REF Branch/tag/sha (default: master)
# DOTFILES_DIR Checkout path (default: $HOME/.local/share/dotfiles)
set -eu
REPO="${DOTFILES_REPO:-https://github.com/sommerfelddev/dotfiles}"
REF="${DOTFILES_REF:-master}"
DIR="${DOTFILES_DIR:-$HOME/.local/share/dotfiles}"
log() { printf '\033[1;32m==>\033[0m %s\n' "$*"; }
err() { printf '\033[1;31m==>\033[0m %s\n' "$*" >&2; }
# ── 1. Nix ────────────────────────────────────────────────────────────────────
if ! command -v nix >/dev/null 2>&1; then
log "Installing Nix (Determinate Systems installer)…"
curl --proto '=https' --tlsv1.2 -sSf -L \
https://install.determinate.systems/nix |
sh -s -- install linux --no-confirm
else
log "Nix already installed, skipping installer."
fi
# Source nix env for the rest of this script (installer writes
# /etc/profile.d/nix.sh but the current shell hasn't sourced it).
if [ -f /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh ]; then
# shellcheck disable=SC1091
. /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh
fi
# ── 2. Repo checkout ─────────────────────────────────────────────────────────
if ! command -v git >/dev/null 2>&1; then
log "Bootstrapping git via nix profile…"
nix profile install nixpkgs#git
fi
if [ -d "$DIR/.git" ]; then
log "Updating existing checkout at $DIR…"
git -C "$DIR" fetch origin "$REF"
git -C "$DIR" checkout "$REF"
git -C "$DIR" pull --ff-only
else
log "Cloning $REPO ($REF) → $DIR…"
mkdir -p "$(dirname "$DIR")"
git clone --branch "$REF" "$REPO" "$DIR"
fi
# ── 3. Home-Manager switch ───────────────────────────────────────────────────
log "Running home-manager switch (this can take a while on first run)…"
nix --extra-experimental-features 'nix-command flakes' \
run home-manager/master -- \
switch --impure --flake "$DIR/remote-dev#vm" -b backup
# ── 4. chsh to nix-store zsh ─────────────────────────────────────────────────
NIX_ZSH="$HOME/.nix-profile/bin/zsh"
if [ -x "$NIX_ZSH" ]; then
if ! grep -qxF "$NIX_ZSH" /etc/shells 2>/dev/null; then
log "Appending $NIX_ZSH to /etc/shells (requires sudo)…"
echo "$NIX_ZSH" | sudo tee -a /etc/shells >/dev/null
fi
current_shell="$(getent passwd "$USER" | cut -d: -f7)"
if [ "$current_shell" != "$NIX_ZSH" ]; then
log "Changing login shell to $NIX_ZSH (requires sudo)…"
sudo chsh -s "$NIX_ZSH" "$USER"
fi
fi
log "Done. Log out and back in for the new shell to take effect."
log "Then run 'nvim' once to let it fetch plugins on first launch."
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