riseproject-dev · Oct 10, 2026 · Oct 13, 2026
diff --git a/.github/workflows/build-lance-context.yml b/.github/workflows/build-lance-context.yml
@@ -111,6 +111,23 @@ jobs:
           rm lance-linalg.tar.gz
           patch -p1 -d lance-linalg-7.0.0-riscv64 < python-wheels/patches/lance-context/${{ env.LANCE_CONTEXT_VERSION }}/0004-lance-linalg-riscv64-simd-fallback.patch
 
+          # From 0.6.6 on, crates/lance-context-core depends on `lance = "9.0.0"`
+          # directly while `lancedb = "0.30.0"` still pulls in the 7.0.0 line,
+          # so both lines get compiled and both need a riscv64-fixed copy; the
+          # 9.0.0 pair's patches (0005/0006) exist only in those versions' dirs.
+          PATCHES=python-wheels/patches/lance-context/${{ env.LANCE_CONTEXT_VERSION }}
+          if [ -f "$PATCHES/0005-lance-core-9.0.0-riscv64-simd-fallback.patch" ]; then
+            for crate in lance-core:0005 lance-linalg:0006; do
+              name=${crate%%:*}
+              num=${crate##*:}
+              curl -fsSL -A "python-wheels (https://github.com/riseproject-dev/python-wheels)" -o "$name.tar.gz" "https://crates.io/api/v1/crates/$name/9.0.0/download"
+              mkdir "$name-9.0.0-riscv64"
+              tar xzf "$name.tar.gz" -C "$name-9.0.0-riscv64" --strip-components=1
+              rm "$name.tar.gz"
+              patch -p1 -d "$name-9.0.0-riscv64" < "$PATCHES/$num-$name-9.0.0-riscv64-simd-fallback.patch"
+            done
+          fi
+
           git apply python-wheels/patches/lance-context/${{ env.LANCE_CONTEXT_VERSION }}/0003-cargo-patch-lance-crates-for-riscv64.patch
 
       - name: Free disk space
@@ -172,10 +189,13 @@ jobs:
           # `pytest -v` from python/, no extra flags). test_rollout_remote.py
           # skips itself when target/debug/lance-context-server hasn't been
           # built, which it isn't here (that crate is a workspace member
-          # neither the Python wheel nor its tests otherwise need).
+          # neither the Python wheel nor its tests otherwise need). From 0.6.6
+          # on that check lives in tests/conftest.py's `server` fixture and
+          # turns into a hard failure whenever `CI` is set, so `CI` is unset
+          # for pytest to keep the same skip.
           CIBW_TEST_COMMAND: >-
             cd python &&
-            python -m pytest tests -v
+            env -u CI python -m pytest tests -v
 
       - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a  # v7.0.1
         with:

diff --git a/docs/packages/lance-context.yaml b/docs/packages/lance-context.yaml
@@ -9,3 +9,5 @@ versions:
   - filename: lance_context-0.6.5-cp39-abi3-manylinux_2_39_riscv64.whl
     sha256: 92d24bb5ae04b93a78c2a04c35b8718f2dd1befa470916b8bb733d24959b1065
     requires-python: '>=3.11, <3.14'
+- version: 0.6.6
+- version: 0.6.7
diff --git a/patches/lance-context/0.6.6/0001-remove-unused-lance-graph-dependency.patch b/patches/lance-context/0.6.6/0001-remove-unused-lance-graph-dependency.patch
@@ -0,0 +1,38 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Ludovic Henry <git@ludovic.dev>
+Date: Tue, 13 Oct 2026 00:00:00 +0000
+Subject: [PATCH] lance-context-core: drop the unused lance-graph dependency
+
+crates/lance-context-core/Cargo.toml depends on `lance-graph = "0.5.4"`,
+but no Rust source file in this workspace imports `lance_graph`
+(`grep -rln lance_graph crates/ python/` matches nothing); it is dead
+weight in the dependency graph. lance-graph's own Cargo.toml pins
+`lance`/`lance-core`/`lance-linalg` at an incompatible `1.x` line, which
+Cargo resolves as yet another parallel copy of the whole lance-core/
+lance-linalg family, alongside the `9.0.0` one crates/lance-context-core
+depends on directly (`lance = "9.0.0"`) and the `7.0.0` one
+`lancedb = "0.30.0"` still pulls in. That `1.x` copy's lance-core
+SIMD_SUPPORT closure and lance-linalg's f32x8/f32x16/i32x8/f64x4/f64x8
+SIMD types have no riscv64 fallback either, so it would need its own
+riscv64-patched copy (see 0003-cargo-patch-lance-crates-for-riscv64.patch)
+just to compile a crate nothing uses. Removing the dead dependency
+drops that whole copy from resolution instead.
+
+Upstream-Status: To upstream [not yet submitted to lance-format/lance-context]
+
+Signed-off-by: Ludovic Henry <git@ludovic.dev>
+---
+diff --git a/crates/lance-context-core/Cargo.toml b/crates/lance-context-core/Cargo.toml
+index 55f7dce..9c2311a 100644
+--- a/crates/lance-context-core/Cargo.toml
++++ b/crates/lance-context-core/Cargo.toml
+@@ -31,7 +31,6 @@ lance-context-api = { version = "0.6.6", path = "../lance-context-api" }
+ lance-index = "9.0.0"
+ lance-namespace = "9.0.0"
+ lancedb = "0.30.0"
+-lance-graph = "0.5.4"
+ # Version-matched with lance-context-server/-master so one process-wide recorder
+ # serves every crate.
+ metrics = { version = "0.24", optional = true }
+-- 
+2.43.0
diff --git a/patches/lance-context/0.6.6/0002-lance-core-riscv64-simd-fallback.patch b/patches/lance-context/0.6.6/0002-lance-core-riscv64-simd-fallback.patch
@@ -0,0 +1,45 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Ludovic Henry <git@ludovic.dev>
+Date: Mon, 06 Oct 2026 00:00:00 +0000
+Subject: [PATCH] lance-core: add a portable riscv64 SIMD-tier fallback
+
+lance-core's SIMD_SUPPORT static (src/utils/cpu.rs) picks a SIMD tier
+via a `cfg`-gated closure with arms for aarch64, x86_64 and loongarch64
+only; none of them match riscv64, so the closure's block has no
+trailing expression there and the crate fails to compile with "expected
+`SimdSupport`, found `()`". Add a `None`-tier fallback arm beside the
+existing ones for every architecture without a dedicated tier.
+
+Applied (via patches/lance-context/0.6.5/0003-cargo-patch-lance-crates-for-riscv64.patch)
+to a local copy of this crate's 7.0.0 crates.io release, which
+crates/lance-context-core's `lance = "7.0.0"` pulls in transitively
+and cannot be patched in place (CLAUDE.md gotcha 300).
+
+Upstream-Status: To upstream [not yet submitted to lance-format/lance]
+
+Signed-off-by: Ludovic Henry <git@ludovic.dev>
+---
+diff --git a/src/utils/cpu.rs b/src/utils/cpu.rs
+index 4e7ab01..34ed3a0 100644
+--- a/src/utils/cpu.rs
++++ b/src/utils/cpu.rs
+@@ -58,6 +58,17 @@ pub static SIMD_SUPPORT: LazyLock<SimdSupport> = LazyLock::new(|| {
+             SimdSupport::None
+         }
+     }
++    // riscv64 (and any other architecture without a dedicated tier above) has
++    // no SIMD kernels in lance yet; upstream's cfg arms have no catch-all, so
++    // this closure otherwise evaluates to `()` here instead of `SimdSupport`.
++    #[cfg(not(any(
++        target_arch = "aarch64",
++        target_arch = "x86_64",
++        target_arch = "loongarch64"
++    )))]
++    {
++        SimdSupport::None
++    }
+ });
+
+ #[cfg(target_arch = "x86_64")]
+-- 
+2.43.0
diff --git a/patches/lance-context/0.6.6/0003-cargo-patch-lance-crates-for-riscv64.patch b/patches/lance-context/0.6.6/0003-cargo-patch-lance-crates-for-riscv64.patch
@@ -0,0 +1,101 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Ludovic Henry <git@ludovic.dev>
+Date: Tue, 13 Oct 2026 00:00:00 +0000
+Subject: [PATCH] cargo: redirect lance-core/lance-linalg to riscv64-patched
+ checkouts
+
+lance-core's SIMD_SUPPORT static (src/utils/cpu.rs) and lance-linalg's
+f32x8/f32x16/i32x8/f64x4/f64x8 SIMD types (src/simd/{f32,i32,f64}.rs)
+are compiled for x86_64/aarch64/loongarch64 only, with no fallback arm
+for any other architecture (CLAUDE.md gotcha 300): the SIMD_SUPPORT
+closure has no trailing expression on riscv64 ("expected SimdSupport,
+found ()"), and the SIMD type structs are defined only under those
+three `#[cfg(target_arch = ...)]` attributes while every method
+implementing them is unconditional, so riscv64 hits "cannot find type
+`f32x8` in this scope" as soon as lance-linalg is built.
+
+Two semver-incompatible lines of both crates are compiled here: 9.0.0,
+via crates/lance-context-core's direct `lance = "9.0.0"`, and 7.0.0,
+which `lancedb = "0.30.0"` (and lance-namespace-impls 7.0.0 under it)
+still pulls in. (lance-graph's own, unused `1.x` copy is dropped
+entirely by 0001-remove-unused-lance-graph-dependency.patch instead.)
+Redirect all four to the riscv64-patched copies the workflow
+materializes at build time from the pinned crates.io releases (see
+0002/0004-lance-{core,linalg}-riscv64-simd-fallback.patch for 7.0.0
+and 0005/0006-lance-{core,linalg}-9.0.0-riscv64-simd-fallback.patch
+for 9.0.0). The 7.0.0 pair is listed under renamed keys with
+`package = ...`, which is how Cargo's [patch] table accepts more than
+one semver-incompatible version of the same crate. Each copy is at the
+same version Cargo.lock already pins -- only the `source`/`checksum`
+lines of those four entries change there, so every other dependency
+stays pinned exactly as upstream released it.
+
+Upstream-Status: Inappropriate [redirects pinned dependencies to local checkouts materialized at build time; the fix itself belongs in lance-format/lance]
+
+Signed-off-by: Ludovic Henry <git@ludovic.dev>
+---
+diff --git a/Cargo.lock b/Cargo.lock
+index ac263f7..d87b7b3 100644
+--- a/Cargo.lock
++++ b/Cargo.lock
+@@ -6491,8 +6491,6 @@ dependencies = [
+ [[package]]
+ name = "lance-core"
+ version = "7.0.0"
+-source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "13f84020da5a484e2f07dd1796e09785ed7cd889857ebc4cb77e32ef214ee594"
+ dependencies = [
+  "arrow-array 58.3.0",
+  "arrow-buffer 58.3.0",
+@@ -6528,8 +6526,6 @@ dependencies = [
+ [[package]]
+ name = "lance-core"
+ version = "9.0.0"
+-source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "238c8a58308e7718d6bd96b53494eb7953fa299778bc4911cc571c3576e9446d"
+ dependencies = [
+  "arrow-array 58.3.0",
+  "arrow-buffer 58.3.0",
+@@ -7387,8 +7383,6 @@ dependencies = [
+ [[package]]
+ name = "lance-linalg"
+ version = "7.0.0"
+-source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "6b4c51cad0ac780b02dc4da48528479e7693c03e8d05390510bbc69ca2a9a1f1"
+ dependencies = [
+  "arrow-array 58.3.0",
+  "arrow-buffer 58.3.0",
+@@ -7405,8 +7399,6 @@ dependencies = [
+ [[package]]
+ name = "lance-linalg"
+ version = "9.0.0"
+-source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "0e5a9b99bd1f49bc2fe5afb81323141abc506c818f589de95dbab4f6143d9a88"
+ dependencies = [
+  "arrow-array 58.3.0",
+  "arrow-buffer 58.3.0",
+diff --git a/Cargo.toml b/Cargo.toml
+index 2efab19..e85f652 100644
+--- a/Cargo.toml
++++ b/Cargo.toml
+@@ -17,3 +17,18 @@ license = "Apache-2.0"
+
+ [workspace.metadata]
+ # reserved for future use
++
++# lance-core's SIMD_SUPPORT static and lance-linalg's f32x8/f32x16/i32x8/
++# f64x4/f64x8 SIMD types compile only for x86_64/aarch64/loongarch64
++# upstream (CLAUDE.md gotcha 300); the riscv64-patched copies below are
++# materialized from the pinned crates.io releases by the workflow at
++# build time. Both the 9.0.0 line (crates/lance-context-core's direct
++# `lance = "9.0.0"`) and the 7.0.0 line (still pulled in by
++# `lancedb = "0.30.0"`) are compiled, so each is redirected; the second
++# pair uses renamed `package =` keys, which is how Cargo's [patch] table
++# takes more than one semver-incompatible version of the same crate.
++[patch.crates-io]
++lance-core = { path = "lance-core-9.0.0-riscv64" }
++lance-linalg = { path = "lance-linalg-9.0.0-riscv64" }
++lance-core-7 = { package = "lance-core", path = "lance-core-7.0.0-riscv64" }
++lance-linalg-7 = { package = "lance-linalg", path = "lance-linalg-7.0.0-riscv64" }
+-- 
+2.43.0