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3,763 commits this week May 16, 2026 - May 23, 2026
cabal-project: drop readFile defaults; inject platform cabalProjectLocal defaults
Two related changes to `modules/cabal-project.nix`:

**1. `cabalProjectLocal` / `cabalProjectFreeze` no longer auto-load
from disk.**  The options were typed `nullOr lines` with
`readIfExists`-based defaults that did IFD lookups for
`cabal.project.local` / `cabal.project.freeze` in the project
source.  Internal projects (hadrian, ghc-extra-projects) explicitly
set them to `null` just to suppress those reads, and the nullability
also prevented `mkBefore` directives from merging cleanly.

Switch the types to plain `lines` (default `""`) — projects that
relied on the implicit `readFile` behaviour now do it explicitly:

    cabalProjectLocal = builtins.readFile ./cabal.project.local;

Internal callers that set `null` for IFD-avoidance lose the
explicit assignments — the new default is already IFD-free.

**2. Platform-conditional defaults are now injected into every
cabal project's `cabalProjectLocal`.**  Four `mkIf` blocks added:

  * **musl host** — `package * \n executable-static: True`.
    comp-builder adds `--ghc-option=-optl=-static` at build time;
    surfacing the toggle here makes plan-to-nix record
    `--enable-executable-static`.  Build artefacts are unchanged.
  * **x86_64-darwin host** — `package * \n library-for-ghci: True`.
    Mirrors what comp-builder passes for `!ghcjs && !wasm && !android`
    (always true on darwin).
  * **android host** —
    `package * \n ghc-options: -optl-static -optl-ldl` (plus
    `-optl-no-pie` on aarch32).  Mirrors `lib/check.nix`'s
    test-exe `setupBuildFlags` re-wrap.
  * **wasm GHC ≥ 9.12** — `package * \n shared: True`.  Wasm's RTS
    linker only loads `.so` files; `--disable-shared` (cabal's
    default given the real compiler's reported capabilities) would
    force a `.a`-only install that TH-eval can't load.

All four sit at `mkBefore` priority so a project's own
`cabalProjectLocal` overrides them.

Cache impact: plan-nix hashes change for affected platforms.
Internal GHC builds verified byte-identical (drvPath
`na9chax1gj2n6jx3d6v86v6fdah9r9fd-ghc-9.14.1.drv` matches master).

Changelog entry added describing both changes.

Pulled out of #2504 (`hkm/builder-v2`).
Inject platform-conditional cabalProjectLocal defaults
Surface the static-linking / library-for-ghci / shared-libs flags
that comp-builder and `lib/check.nix` already apply at the
artefact level into the plan-to-nix step, so plan-nix's recorded
configure-args and UnitIds match what cabal v2-build would compute
against the real compiler.

Four mkIfs added to `modules/cabal-project.nix`:

* **musl host** — `package * \n executable-static: True`.
  comp-builder adds `--ghc-option=-optl=-static` at build time;
  surfacing the toggle here makes plan-to-nix record
  `--enable-executable-static`.  Build artefacts are unchanged.
* **x86_64-darwin host** — `package * \n library-for-ghci: True`.
  Mirrors what comp-builder passes for `!ghcjs && !wasm && !android`
  (always true on darwin).
* **android host** —
  `package * \n ghc-options: -optl-static -optl-ldl` (plus
  `-optl-no-pie` on aarch32).  Mirrors `lib/check.nix`'s test-exe
  setupBuildFlags re-wrap.
* **wasm GHC ≥ 9.12** — `package * \n shared: True`.  Wasm's RTS
  linker only loads `.so` files; `--disable-shared` (cabal's
  default given the real compiler's reported capabilities) would
  force a `.a`-only install that TH-eval can't load.

All four directives sit at `mkBefore` priority so a project's own
`cabalProjectLocal` overrides them.

Cache impact: plan-nix hashes change for affected platforms.

Changelog entry added in `changelog.md` describing the cache-bust
and the opt-out path.

Pulled out of #2504 (`hkm/builder-v2`).
Add `useLocalGhcLib` project option (#2510)
* Add `useLocalGhcLib` project option

Surface what `modules/configuration-nix.nix` used to do
unconditionally as an opt-in `useLocalGhcLib` flag, so the
`packages.ghc.src` override only fires when a project actually
constrains the `ghc` package (e.g. `ghc-lib-reinstallable`).

Four pieces:

* `modules/project-common.nix`: add the `useLocalGhcLib` option
  (default `false`).
* `modules/configuration-nix.nix`: drop the unconditional
  `packages.ghc.src` / `packages.ghc.package-description-override`
  overrides — they're moved into the per-project wiring below.
* `modules/stack-project.nix`: under `useLocalGhcLib`, re-apply
  the `packages.ghc.src` post-plan override.  Stack-to-nix can't
  use the cabal-project route, so this keeps the existing
  behaviour for stack users who flip the flag.
* `modules/cabal-project.nix`: under `useLocalGhcLib`, inject a
  `source-repository-package` block into `cabalProjectLocal`
  pointing at the configured-src + generated GHC tree, and add an
  `inputMap` entry so haskell.nix doesn't try to fetch the URL.
  Cabal then hashes the wrapped repo's content into
  `pkg-src-sha256` and installs `lib:ghc` like any other
  reinstallable dep.

Projects that need the previous always-on behaviour now set
`useLocalGhcLib = true` on the project module; everyone else gets
a smaller plan-nix and avoids the unconditional `configured-src`
materialisation.

Pulled out of #2504 (`hkm/builder-v2`).

* ghc-lib-reinstallable test + changelog: set useLocalGhcLib = true

Flips the new opt-in flag in both test variants and adds a
changelog entry telling users to do the same when they constrain
`lib:ghc`.
Pin SRPs at the Leios prototype remake forks (consensus / ledger / network)
Updates cabal.project to point at the three rebased Leios forks that
ship with this cardano-node 11.0.1 build:

  - ouroboros-consensus  @  IntersectMBO/ouroboros-consensus
    branch leios-prototype-remake-3.0.1.0
    Single squashed Leios commit on top of release-3.0.1.0
    (mempool + diffusion + chain inclusion + voting + demo).
  - ouroboros-network    @  IntersectMBO/ouroboros-network
    branch leios-prototype-remake-1.1.0.0
    Three Leios commits on top of ouroboros-network-1.1.0.0
    (BearerBytes, Reception arrival-time, drop unused imports)
    + a trace-dispatcher version bump for compat with cardano-node 11.0.1.
  - cardano-ledger       @  IntersectMBO/cardano-ledger
    branch leios-prototype-remake
    Adds 'Maybe LeiosCert' on the Dijkstra block body
    (Dijkstra-only, mirrors 'Maybe PerasCert').

Also drops the 'dmq-node' extra-package (its latest CHaP release
requires ouroboros-network:framework-tracing, a sublib name that
the remade network fork doesn't carry).

Vendors a one-line 'ekg-forward' source patch (left untouched here)
to match the network's pre-bump 'ConnectToArgs' shape.

Co-Authored-By: Claude Opus 4.7 <[email protected]>
N2: wire Leios tracers into cardano-node Tracers / OrphanInstances
The consensus Leios chunks added four fields to the consensus tracer
records that cardano-node assembles in 'Cardano.Tracing.Tracers' (old
style) and 'Cardano.Node.Tracing.Tracers' (new style):

  - Consensus.Tracers'      gained 'leiosKernelTracer' and 'leiosPeerTracer'
  - NodeToNode.Tracers'     gained 'tLeiosNotifyTracer' and 'tLeiosFetchTracer'

This commit populates those fields in both 'mkTracers' code paths so
the record-construction sites are total. All four are wired to
'nullTracer' for now; the corresponding 'Transformable' / 'MetaTrace'
instances and EKG metrics are left as TODO. The new-style tracing
system will accordingly emit a 'TracerConsistencyWarnings' for the
four Leios namespaces declared in the config.yaml — that surfaces the
gap explicitly rather than silently dropping the configuration.

Adds the corresponding selectors to 'TraceSelection' / 'PartialTraceSelection'
and their JSON parsing:

  - traceLeiosKernel          / Consensus.LeiosKernel
  - traceLeiosPeer            / Consensus.LeiosPeer
  - traceLeiosNotifyProtocol  / LeiosNotify.Remote
  - traceLeiosFetchProtocol   / LeiosFetch.Remote

Also drops the duplicate 'LogFormatting (Simple/Stateful.TraceSendRecv)'
and 'MetaTrace (Simple/Stateful.TraceSendRecv)' instances that the
upstream leios-prototype branch carried in
'Cardano/Node/Tracing/Tracers/NodeToClient.hs' — they are now provided
by 'ouroboros-network:framework-tracing' and would collide if redefined
here.

Co-Authored-By: Claude Opus 4.7 <[email protected]>
N3: LeiosDbConfig configuration entry + thread to consensus
Introduces 'Cardano.Node.Configuration.Leios.LeiosDbConfig' with two
constructors:

  - LeiosDbInMemory          (matches 'LeiosDbConnection's in-memory backend)
  - LeiosDbSQLite !FilePath  (SQLite backend, file relative to node CWD)

Wired through 'PartialNodeConfiguration' / 'NodeConfiguration' as
'ncLeiosDbConfig' with JSON parsing ('"LeiosDbConfig":{"Backend":...,
"Filepath":...}') and a default of 'LeiosDbSQLite "leios.db"'.

At node startup ('Cardano.Node.Run.handleSimpleNode'), the configured
backend is materialised into a 'LeiosDbHandle' (via 'newLeiosDBInMemory'
/ 'newLeiosDBSQLite') and passed into 'RunNodeArgs' through a new
'rnLeiosDb :: Maybe (LeiosDbHandle m)' field, which consensus's
'runWith' threads into the Leios kernel's shared connection.
'Nothing' falls back to the in-memory default.

Co-Authored-By: Claude Opus 4.7 <[email protected]>
tx-generator: adapt to Leios-extended Codecs + Reception-wrapped recv
The consensus Leios chunks extended 'NTN.Codecs' with two extra type
parameters ('bLN' / 'bLF', for LeiosNotify and LeiosFetch), and the
network-side BearerBytes/Reception work changed 'runPeerWithLimits' to
return 'Maybe (Reception bytes)' (instead of 'Maybe bytes') and made
'byteLimitsKeepAlive' parameter-less.

Update 'tx-generator' to compile against the rebased stack:

  - Pull in 'ouroboros-network:framework-tracing' as a sublib dependency.
  - Extend the local 'myCodecs' type to 9 'ByteString' parameters (was 7).
  - Update 'kaClient' return type to 'IO ((), Maybe (Mux.Reception ByteString))'.
  - Drop the size-function argument from 'byteLimitsKeepAlive'.

Co-Authored-By: Claude Opus 4.7 <[email protected]>
Wire Leios mini-protocols into NodeToNode bundle
Mempend a small OuroborosBundle with leiosNotify/leiosFetch on the Hot
temperature onto the existing five-protocol bundle in initiator and
initiatorAndResponder.  Define the matching ingress-queue limits from the
demo's LeiosFetchStaticEnv.  This matches the upstream leios-prototype
pattern - the change is contained to consensus and leaves the network
NodeToNodeProtocols record untouched.

Co-Authored-By: Claude Opus 4.7 <[email protected]>
chore(deps): bump qs in /utilities/reviews-mock-server
Bumps [qs](https://github.com/ljharb/qs) from 6.14.0 to 6.15.2.
- [Changelog](https://github.com/ljharb/qs/blob/main/CHANGELOG.md)
- [Commits](https://github.com/ljharb/qs/compare/v6.14.0...v6.15.2)

---
updated-dependencies:
- dependency-name: qs
  dependency-version: 6.15.2
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>