nix-super/tests/supplementary-groups.sh

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source common.sh
requireSandboxSupport
[[ $busybox =~ busybox ]] || skipTest "no busybox"
if ! command -p -v unshare; then skipTest "Need unshare"; fi
needLocalStore "The test uses --store always so we would just be bypassing the daemon"
unshare --mount --map-root-user bash <<EOF
source common.sh
setLocalStore () {
export NIX_REMOTE=\$TEST_ROOT/\$1
mkdir -p \$NIX_REMOTE
}
cmd=(nix-build ./hermetic.nix --arg busybox "$busybox" --arg seed 1 --no-out-link)
# Fails with default setting
# TODO better error
setLocalStore store1
expectStderr 1 "\${cmd[@]}" | grepQuiet "unable to start build process"
# Fails with `require-drop-supplementary-groups`
# TODO better error
setLocalStore store2
NIX_CONFIG='require-drop-supplementary-groups = true' \
expectStderr 1 "\${cmd[@]}" | grepQuiet "unable to start build process"
# Works without `require-drop-supplementary-groups`
setLocalStore store3
NIX_CONFIG='require-drop-supplementary-groups = false' \
"\${cmd[@]}"
EOF