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pkgmgr/scripts/nix/lib/users.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_USERS_SH:-}" ]]; then
return 0
fi
PKGMGR_NIX_USERS_SH=1
# Ensure Nix build group and users exist (build-users-group = nixbld) - root only
ensure_nix_build_group() {
if ! getent group nixbld >/dev/null 2>&1; then
echo "[init-nix] Creating group 'nixbld'..."
groupadd -r nixbld
fi
for i in $(seq 1 10); do
if ! id "nixbld$i" >/dev/null 2>&1; then
echo "[init-nix] Creating build user nixbld$i..."
useradd -r -g nixbld -G nixbld -s /usr/sbin/nologin "nixbld$i"
fi
done
}
# Container-only helper: /nix ownership + perms for single-user install as 'nix'
ensure_nix_store_dir_for_container_user() {
if [[ ! -d /nix ]]; then
echo "[init-nix] Creating /nix with owner nix:nixbld..."
mkdir -m 0755 /nix
chown nix:nixbld /nix
return 0
fi
local current_owner current_group
current_owner="$(stat -c '%U' /nix 2>/dev/null || echo '?')"
current_group="$(stat -c '%G' /nix 2>/dev/null || echo '?')"
if [[ "$current_owner" != "nix" || "$current_group" != "nixbld" ]]; then
echo "[init-nix] Fixing /nix ownership from $current_owner:$current_group to nix:nixbld..."
chown -R nix:nixbld /nix
fi
}
# Container-only helper: make nix profile executable/traversable for non-root
ensure_container_profile_perms() {
if [[ -d /home/nix ]]; then
chmod o+rx /home/nix 2>/dev/null || true
fi
if [[ -d /home/nix/.nix-profile ]]; then
chmod -R o+rx /home/nix/.nix-profile 2>/dev/null || true
fi
}