55 lines
2.1 KiB
Shell
Executable file
55 lines
2.1 KiB
Shell
Executable file
#!/bin/sh
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# CI's "nix flake check" job: the same coverage as `nix flake check` on
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# x86_64-linux, as two processes so the evaluator has exited before any build
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# starts and no single evaluator holds the whole suite's heap.
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#
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# 1. nix-eval-jobs evaluates every check, package, dev shell, the formatter
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# and each nixosConfiguration's toplevel, one worker at a time. A worker
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# past --max-memory-size is replaced after its current attribute, so the
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# peak is about the cap plus the heaviest single attribute.
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# 2. nix build builds the checks' derivations. The other attributes are
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# evaluated only, as `nix flake check` does.
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#
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# nix-eval-jobs reports an evaluation error as an `error` field on that
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# attribute's line, not as its exit status, so this script fails on any.
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#
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# Needs nix-eval-jobs and jq on PATH; ci.yml takes both from the flake's
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# pinned nixpkgs.
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set -eu
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system=x86_64-linux
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work="$(mktemp -d)"
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trap 'rm -rf "$work"' EXIT
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nix-eval-jobs \
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--workers 1 \
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--max-memory-size 4096 \
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--gc-roots-dir "$work/gcroots" \
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--flake . \
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--select "flake: let o = flake.outputs; group = s: s // { recurseForDerivations = true; }; in {
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checks = group o.checks.$system;
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packages = group o.packages.$system;
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devShells = group o.devShells.$system;
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formatter = o.formatter.$system;
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nixosConfigurations = group (builtins.mapAttrs (_: c: c.config.system.build.toplevel) o.nixosConfigurations);
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}" >"$work/jobs.json"
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jq -r 'select(has("error")) | "\(.attr): \(.error)"' "$work/jobs.json" >"$work/errors"
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if [ -s "$work/errors" ]; then
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echo "evaluation failed for $(jq -s 'map(select(has("error"))) | length' "$work/jobs.json") attribute(s):" >&2
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cat "$work/errors" >&2
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exit 1
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fi
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jq -r 'select(.attrPath[0] == "checks") | .drvPath + "^*"' "$work/jobs.json" >"$work/build"
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if [ ! -s "$work/build" ]; then
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echo "nix-eval-jobs returned no checks; the --select expression matched nothing" >&2
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exit 1
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fi
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echo "evaluated $(jq -s length "$work/jobs.json") attributes; building $(wc -l <"$work/build") checks"
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set --
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while IFS= read -r drv; do
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set -- "$@" "$drv"
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done <"$work/build"
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nix build --no-link --keep-going "$@"
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