eldritch horrors
56988d8605
this halves sandbox launch overhead, reducing the build time for 3000 trivial runCommand derivations on our machine from 80 seconds to 44s. as a nice side effect we also get better error message propagation in some cases, most notably setgroups failing when run in lix sandboxes. Change-Id: Ia7c50a844915d9b8a20475b90b2d0179fd2fff34
37 lines
1.0 KiB
Bash
37 lines
1.0 KiB
Bash
source common.sh
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requireSandboxSupport
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[[ $busybox =~ busybox ]] || skipTest "no busybox"
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if ! command -p -v unshare; then skipTest "Need unshare"; fi
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needLocalStore "The test uses --store always so we would just be bypassing the daemon"
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unshare --mount --map-root-user bash <<EOF
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source common.sh
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# Avoid store dir being inside sandbox build-dir
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unset NIX_STORE_DIR
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setLocalStore () {
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export NIX_REMOTE=\$TEST_ROOT/\$1
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mkdir -p \$NIX_REMOTE
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}
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cmd=(nix-build ./hermetic.nix --arg busybox "$busybox" --arg seed 1 --no-out-link)
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# Fails with default setting
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# TODO better error
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setLocalStore store1
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expectStderr 1 "\${cmd[@]}" | grepQuiet "setgroups failed"
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# Fails with `require-drop-supplementary-groups`
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# TODO better error
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setLocalStore store2
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NIX_CONFIG='require-drop-supplementary-groups = true' \
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expectStderr 1 "\${cmd[@]}" | grepQuiet "setgroups failed"
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# Works without `require-drop-supplementary-groups`
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setLocalStore store3
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NIX_CONFIG='require-drop-supplementary-groups = false' \
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"\${cmd[@]}"
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EOF
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