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pkgmgr/scripts/nix/lib/symlinks.sh
Kevin Veen-Birkenbach 2761e829cb
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ci: add GHCR container publish pipeline with semantic tags
Introduce a dedicated publish-containers workflow triggered after stable releases.
Unify container build and publish logic via scripts, add buildx-based multi-tag publishing,
default base image resolution, and Arch alias tags for latest/version/stable.

https://chatgpt.com/share/693c836b-0b00-800f-9536-9e273abd0fb5
2025-12-12 22:04:39 +01:00

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#!/usr/bin/env bash
if [[ -n "${PKGMGR_NIX_SYMLINKS_SH:-}" ]]; then
return 0
fi
PKGMGR_NIX_SYMLINKS_SH=1
# Requires: real_exe, resolve_nix_bin
# shellcheck disable=SC2034
# Ensure globally reachable nix symlink(s) (CI / non-login shells) - root only
ensure_global_nix_symlinks() {
local nix_bin="${1:-}"
[[ -z "$nix_bin" ]] && nix_bin="$(resolve_nix_bin 2>/dev/null || true)"
if [[ -z "$nix_bin" || ! -x "$nix_bin" ]]; then
echo "[init-nix] WARNING: nix binary not found, cannot create global symlink(s)."
return 0
fi
# Always link to the real executable to avoid /usr/local/bin/nix -> /usr/local/bin/nix
nix_bin="$(real_exe "$nix_bin" 2>/dev/null || echo "$nix_bin")"
local targets=()
# Always provide /usr/local/bin/nix for CI shells
mkdir -p /usr/local/bin 2>/dev/null || true
targets+=("/usr/local/bin/nix")
# Provide sudo-friendly locations only if they are NOT present (do not override distro paths)
if [[ ! -e /usr/bin/nix ]]; then
targets+=("/usr/bin/nix")
fi
if [[ ! -e /usr/sbin/nix ]]; then
targets+=("/usr/sbin/nix")
fi
local target current_real
for target in "${targets[@]}"; do
current_real=""
if [[ -e "$target" ]]; then
current_real="$(real_exe "$target" 2>/dev/null || true)"
fi
if [[ -n "$current_real" && "$current_real" == "$nix_bin" ]]; then
echo "[init-nix] $target already points to: $nix_bin"
continue
fi
# If something exists but is not the same (and we promised not to override), skip.
if [[ -e "$target" && "$target" != "/usr/local/bin/nix" ]]; then
echo "[init-nix] WARNING: $target exists; not overwriting."
continue
fi
if ln -sf "$nix_bin" "$target" 2>/dev/null; then
echo "[init-nix] Ensured $target -> $nix_bin"
else
echo "[init-nix] WARNING: Failed to ensure $target symlink."
fi
done
}
# Ensure user-level nix symlink (works without root; CI-safe)
ensure_user_nix_symlink() {
local nix_bin="${1:-}"
[[ -z "$nix_bin" ]] && nix_bin="$(resolve_nix_bin 2>/dev/null || true)"
if [[ -z "$nix_bin" || ! -x "$nix_bin" ]]; then
echo "[init-nix] WARNING: nix binary not found, cannot create user symlink."
return 0
fi
nix_bin="$(real_exe "$nix_bin" 2>/dev/null || echo "$nix_bin")"
mkdir -p "$HOME/.local/bin" 2>/dev/null || true
ln -sf "$nix_bin" "$HOME/.local/bin/nix"
echo "[init-nix] Ensured $HOME/.local/bin/nix -> $nix_bin"
PATH="$HOME/.local/bin:$PATH"
export PATH
if [[ -w "$HOME/.profile" ]] && ! grep -q 'nix/init.sh' "$HOME/.profile" 2>/dev/null; then
cat >>"$HOME/.profile" <<'EOF'
# PATH for nix (added by package-manager nix/init.sh)
if [ -d "$HOME/.local/bin" ]; then
PATH="$HOME/.local/bin:$PATH"
fi
EOF
fi
}