fcda1f4a04
The crate README rewrite was unrolled at eval time: one sed block per crate, each carrying one -e expression per other crate. The installPhase string grew with the square of the crate count, and at 40 crates (d5de1e494added swarm-claude-login) it reached 131708 bytes. Linux caps a single environment variable at 128 KiB, so exec of the builder failed with "Argument list too long" and every consumer of reference-docs failed with it, the website repo included. The rewrite is now a shell loop over $members at build time, building the same sed expressions per crate. The phase text no longer depends on the crate count. Output is byte-identical to the old form at6aab2ebb6(39 crates, the last commit where it built). Closes #5321
93 lines
3.9 KiB
Nix
93 lines
3.9 KiB
Nix
{
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stdenv,
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self,
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optionsMd,
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}:
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# The repo `docs/` markdown tree, shipped as a standalone derivation so
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# agents can read the reference docs in-container (added as a claude
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# additional directory by the harness) WITHOUT pulling the branding +
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# prompt assets they don't need, and so the `hyperhive/website` repo can
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# reuse the exact same tree as a flake input.
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#
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# The docs/ tree is copied verbatim. Two more subdirs are virtualized on
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# top of it, same reasoning for both: project an external source of
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# truth into the tree instead of hand-copying (and drifting) it.
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# `docs.nix` (website repo) needs no changes to pick either up — it
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# already walks every subdirectory generically.
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#
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# For crates that is `$out/crates/<crate>.md`, one per workspace crate
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# with a README.md (mara's ask: "behaves as if hive-core/README.md lives
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# at docs/crates/hive-core.md" — lint:allow, a path this derivation
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# creates in $out, so the repo has no such file). The crate's own README
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# stays the single source of truth.
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#
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# Output layout:
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# $out/ — the repo docs/ tree verbatim
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# $out/crates/<crate>.md — one per workspace crate README
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# $out/options/*.md — the nixosOptionsDoc bundle (`packages.docs`,
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# nix/docs/default.nix), copied verbatim —
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# already self-contained CommonMark, unlike
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# the crate READMEs below, so no rewriting.
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let
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cargoToml = builtins.fromTOML (builtins.readFile ../../Cargo.toml);
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members = cargoToml.workspace.members;
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in
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stdenv.mkDerivation {
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pname = "hyperhive-docs";
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version = "0.1.0";
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# Narrow src (just docs/) keeps the *base tree*'s input hash decoupled
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# from the rest of the workspace — a doc edit only re-hashes this half.
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# The crates/ generation below necessarily widens that: it reads
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# each crate's own README.md via `self`, so this derivation's hash now
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# also tracks the whole repo tree (Nix has no cheaper way to depend on
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# "just these few files" out of a flake `self`). Accepted trade-off —
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# the alternative is hand-copying READMEs into docs/ and letting them
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# drift, which is the exact duplication this issue exists to avoid.
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src = ../../docs;
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inherit self optionsMd members;
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dontBuild = true;
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dontConfigure = true;
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# The per-crate rewrite is a loop at build time, so this phase's text
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# stays the same size as crates are added: each attribute reaches the
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# builder as one environment variable, and Linux refuses to exec with
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# a single one over 128 KiB.
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installPhase = ''
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runHook preInstall
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mkdir -p $out
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cp -r ./* $out/
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mkdir -p "$out/crates"
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cp -r "$optionsMd" "$out/options"
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for member in $members; do
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[ -f "$self/$member/README.md" ] || continue
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# Rewrite relative links that were correct from the crate's own
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# position in the repo tree but aren't once the file is
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# virtually one level under docs/ instead:
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# ../docs/x.md (crate root -> repo docs/) -> ../x.md lint:allow (stand-in name)
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# (crates/ -> docs/ is one directory shallower than
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# <crate>/ -> docs/ was, so the leading docs/ segment drops)
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# ../<sibling-crate> (that crate's own directory, no file; forge
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# renders it as a directory listing) -> ./<sibling-crate>.md,
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# since every crate README lives flat beside it under crates/.
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fixups=(-e 's,\]\(\.\./docs/,](../,g')
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for other in $members; do
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[ "$other" != "$member" ] || continue
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fixups+=(-e "s,\]\(\.\./$other(/)?\),](./$other.md),g")
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done
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sed -E "''${fixups[@]}" "$self/$member/README.md" >"$out/crates/$member.md"
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done
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runHook postInstall
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'';
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dontFixup = true;
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meta = {
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description = "hyperhive reference docs (the repo docs/ tree, plus virtual crates/<crate>.md and options/*.md subdirs)";
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homepage = "https://forge.darkest.space/hyperhive/hyperhive";
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};
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}
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