status-mobile/nix/scripts/lib.sh

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#!/usr/bin/env bash
# Checking group ownership to identify installation type.
file_group() {
UNAME=$(uname -s)
if [[ "${UNAME}" == "Linux" ]]; then
stat -Lc "%G" "${1}" 2>/dev/null
elif [[ "${UNAME}" == "Darwin" ]]; then
stat -Lf "%Sg" "${1}" 2>/dev/null
fi
}
os_name() {
source /etc/os-release 2>/dev/null
echo "${NAME}"
}
is_arch_linux() {
[[ -f /etc/arch-release ]]
}
nix_install_type() {
NIX_STORE_DIR_GROUP=$(file_group /nix/store)
if [[ "$(os_name)" =~ NixOS ]]; then
echo "nixos"
elif [[ "${NIX_STORE_DIR_GROUP}" == "nixbld" ]]; then
echo "multi"
elif [[ "${NIX_STORE_DIR_GROUP}" == "${USER}" ]]; then
echo "single"
elif [[ "${NIX_STORE_DIR_GROUP}" == "" ]]; then
echo "No Nix installtion detected!" >&2
echo "none"
else
echo "Unknown Nix installtion type!" >&2
exit 1
fi
}