[WIP] Fix Rust packages

recipes/recipes/rust-nightly/activate.sh

@@ -2,6 +2,8 @@
 
 echo "[rust-nightly] Activating..."
 
+set +u
+
 [ -z "${BUILD_PREFIX}" ] && export BUILD_PREFIX="${PREFIX}"
 
 export RUSTUP_HOME=$BUILD_PREFIX/.rustup_emscripten_forge

recipes/recipes/rust-nightly/bootstrap.toml

@@ -0,0 +1,16 @@
+change-id = "ignore"
+build.verbose = 0
+
+rust.channel = "nightly"
+
+build.target = ["wasm32-unknown-emscripten"]
+build.docs = false
+
+build.cargo = "$CARGO_BIN"
+build.rustc = "$RUSTC_BIN"
+build.rustfmt = "$RUSTFMT_BIN"
+build.cargo-clippy = "$CLIPPY_BIN"
+
+install.prefix = "$PREFIX"
+install.sysconfdir = "$PREFIX/etc"
+

recipes/recipes/rust-nightly/build.sh

@@ -6,6 +6,8 @@ do
     cp "${RECIPE_DIR}/${TASK}.sh" "${PREFIX}/etc/conda/${TASK}.d/${TASK}_${PKG_NAME}.sh"
 done
 
+set -eux
+
 export RUSTUP_HOME=$PREFIX/.rustup_emscripten_forge
 export CARGO_HOME=$PREFIX/.cargo_emscripten_forge
 
@@ -16,3 +18,68 @@ curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- \
     --profile minimal \
     --target wasm32-unknown-emscripten \
     -y
+
+
+# RUSTC_DATE=$(rustc --version | cut -d' ' -f4 | tr -d '()')
+# # RUSTC_DATE="2025-12-01"
+# wget --quiet https://static.rust-lang.org/dist/${RUSTC_DATE}/channel-rust-nightly.toml
+
+# Get the git_commit_hash for pkg.rustc [don't forget the C!]
+# COMMIT_HASH=$(grep -A 2 "\[pkg.rustc\]" channel-rust-nightly.toml | grep git_commit_hash | cut -d'"' -f2)
+
+rustc -vV
+COMMIT_HASH=$(rustc -vV | grep commit-hash | cut -d' ' -f2)
+echo "♥️♥️♥️ COMMIT_HASH: $COMMIT_HASH"
+
+git clone https://github.com/rust-lang/rust.git --shallow-since=2025-01-01
+cd rust
+git reset --hard
+git checkout $COMMIT_HASH
+
+# https://github.com/pyodide/rust-emscripten-wasm-eh-sysroot/blob/main/turn-on-emscripten-wasm-eh.patch
+sed -i 's/emscripten_wasm_eh: bool = (false, parse_bool, \[TRACKED\],/\
+          emscripten_wasm_eh: bool = (true, parse_bool, [TRACKED],/' \
+          compiler/rustc_session/src/options.rs
+
+# Use nightly rustc and cargo
+export PATH=$CARGO_HOME/bin:$PATH
+rustup default nightly
+rustup override set nightly
+rustup component add rustfmt
+rustup component add clippy
+export RUSTC_BIN=$(which rustc)
+export CARGO_BIN=$(which cargo)
+export RUSTFMT_BIN=$(which rustfmt)
+export CLIPPY_BIN=$(which cargo-clippy)
+
+envsubst < $RECIPE_DIR/config.toml > ./config.toml
+envsubst < $RECIPE_DIR/bootstrap.toml > ./bootstrap.toml
+
+cat bootstrap.toml
+
+./x build library --stage 1 --target wasm32-unknown-emscripten --config bootstrap.toml
+# ./x build library --stage 2 --target wasm32-unknown-emscripten
+# ./x build library --stage 2 --target x86_64-unknown-linux-gnu
+
+# CUSTOM_TOOLCHAIN="${RUSTUP_HOME}/rust-toolchain-wasm-eh"
+# mkdir -p $CUSTOM_TOOLCHAIN
+# cp -r build/host/stage2/* $CUSTOM_TOOLCHAIN/
+# rustup toolchain link rust-toolchain-wasm-eh $CUSTOM_TOOLCHAIN
+# rustup default rust-toolchain-wasm-eh
+
+# # Need to install and then remove the target so that it is recognized as active
+RUST_TOOLCHAIN=$(rustup show active-toolchain | awk '{print $1}')
+echo "🧿🧿🧿 LOOK"
+ls -al $RUSTUP_HOME/toolchains/$RUST_TOOLCHAIN/lib/rustlib/wasm32-unknown-emscripten/lib
+rm -r $RUSTUP_HOME/toolchains/$RUST_TOOLCHAIN/lib/rustlib/wasm32-unknown-emscripten
+cp -r build/host/stage1/lib/rustlib/wasm32-unknown-emscripten \
+    $RUSTUP_HOME/toolchains/$RUST_TOOLCHAIN/lib/rustlib/
+
+echo "👁️‍🗨️👁️‍🗨️👁️‍🗨️ LOOK AGAIN"
+ls -al $RUSTUP_HOME/toolchains/$RUST_TOOLCHAIN/lib/rustlib/wasm32-unknown-emscripten/lib
+
+rustup toolchain list
+rustc --version
+rustup --version
+
+

recipes/recipes/rust-nightly/config.toml

@@ -0,0 +1,9 @@
+profile = "compiler"
+change-id = "ignore"
+
+[build]
+target = ["wasm32-unknown-emscripten"]
+docs = false
+
+[rust]
+channel = "nightly"

recipes/recipes/rust-nightly/recipe.yaml

@@ -7,7 +7,7 @@ package:
   version: ${{ version }}
 
 build:
-  number: 2
+  number: 9
 
 requirements:
   build:
@@ -23,8 +23,8 @@ about:
   homepage: https://www.rust-lang.org
   license: MIT
   license_file:
-    - LICENSE-APACHE
-    - LICENSE-MIT
+  - LICENSE-APACHE
+  - LICENSE-MIT
   summary: |
     Rust is a systems programming language that runs blazingly fast, prevents
     segfaults, and guarantees thread safety. This package provides the compiler
@@ -34,5 +34,5 @@ about:
 
 extra:
   recipe-maintainers:
-    - DerThorsten
-    - IsabelParedes
+  - DerThorsten
+  - IsabelParedes

recipes/recipes_emscripten/cramjam/build.sh

@@ -1,4 +1,27 @@
 #!/bin/bash
 
-export MATURIN_PYTHON_SYSCONFIGDATA_DIR=${PREFIX}/etc/conda/_sysconfigdata__emscripten_wasm32-emscripten.py
-${PYTHON} -m pip install . -vv
+set -eux
+
+# # emcc: error: DISABLE_EXCEPTION_CATCHING=0 is not compatible with -fwasm-exceptions
+# unset EMCC_CFLAGS
+
+# # rustup toolchain install nightly
+# # rustup target add wasm32-unknown-emscripten --toolchain nightly
+# # rustup override set nightly
+# # rustup default nightly
+
+# # export CARGO_BUILD_TARGET=wasm32-unknown-emscripten
+# # export PYTHON_SYS_EXECUTABLE=$BUILD_PREFIX/bin/python3.13
+# # export RUSTUP_TOOLCHAIN=nightly
+# # export PYO3_CROSS_LIB_DIR=$BUILD_PREFIX/lib
+# # export PYO3_CROSS_INCLUDE_DIR=$BUILD_PREFIX/include
+# # export CARGO_FEATURE_NO_DEFAULT_FEATURES=1
+# # export CARGO_NO_DEFAULT_FEATURES=1
+# # export MATURIN_NO_DEFAULT_FEATURES=1
+
+# # python -m pip install . --config-settings="maturin-args=--no-default-features" --no-build-isolation --prefix $PREFIX -vvv
+# # # Use maturin with all cross-compilation variables
+# RUSTUP_TOOLCHAIN=nightly maturin build --release --target wasm32-unknown-emscripten -i python3.13 --no-default-features --out dist
+# python -m pip install dist/*.whl --prefix $PREFIX -vvv
+export RUSTFLAGS="-Z emscripten-wasm-eh"
+$PYTHON -m pip install . $PIP_ARGS

recipes/recipes_emscripten/cramjam/patches/0001-Remove-blosc2-from-default-features.patch

@@ -0,0 +1,23 @@
+From 02c04db7feecbcc9d70baf3135a66045b5631073 Mon Sep 17 00:00:00 2001
+From: Isabel Paredes <isabel.paredes@quantstack.net>
+Date: Tue, 25 Nov 2025 11:02:28 +0100
+Subject: [PATCH] Remove blosc2 from default features
+
+blosc2 tries to build an internal zlib and fails.
+---
+ Cargo.toml | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/Cargo.toml b/Cargo.toml
+index 0c11a83..066ef00 100644
+--- a/Cargo.toml
++++ b/Cargo.toml
+@@ -14,7 +14,7 @@ name = "cramjam"
+ crate-type = ["cdylib"]
+
+ [features]
+-default                  = ["extension-module", "snappy", "lz4", "bzip2", "brotli", "xz", "zstd", "gzip", "deflate", "blosc2", "igzip"]
++default                  = ["extension-module", "snappy", "lz4", "bzip2", "brotli", "xz", "zstd", "gzip", "deflate", "igzip"]
+ extension-module         = ["pyo3/extension-module"]
+ generate-import-lib      = ["pyo3/generate-import-lib"]  # needed for Windows PyPy builds
+

recipes/recipes_emscripten/cramjam/recipe.yaml

@@ -1,31 +1,34 @@
 context:
   name: cramjam
-  version: 2.8.3
+  version: 2.11.0
 
 package:
-  name: ${{ name|lower }}
+  name: ${{ name }}
   version: ${{ version }}
 
 source:
   url: https://pypi.io/packages/source/${{ name[0] }}/${{ name }}/${{ name }}-${{ version }}.tar.gz
-  sha256: 6b1fa0a6ea8183831d04572597c182bd6cece62d583a36cde1e6a86e72ce2389
+  sha256: 5c82500ed91605c2d9781380b378397012e25127e89d64f460fea6aeac4389b4
+  patches:
+  - patches/0001-Remove-blosc2-from-default-features.patch
 
 build:
   number: 0
 
 requirements:
   build:
-    - python
-    - cross-python_${{ target_platform }}
-    - maturin
-    - toml
-    - rust
-    - ${{ compiler('cxx') }}
+  - python
+  - cross-python_${{ target_platform }}
+  - maturin
+  - toml
+  - rust-nightly
+  - ${{ compiler('cxx') }}
   host:
-    - python
-    - pip
+  - python
+  - pip
+  - zlib
   run:
-    - python
+  - python
 
 tests:
   - script: pytester
@@ -45,7 +48,7 @@ about:
   license_file: LICENSE
   summary: python bindings to rust-implemented compression
   description: |
-    Extremely thin Python bindings to de/compression algorithms in Rust. 
+    Extremely thin Python bindings to de/compression algorithms in Rust.
   documentation: https://docs.rs/cramjam
 
 extra:

recipes/recipes_emscripten/pycrdt/recipe.yaml

@@ -3,24 +3,26 @@ context:
   version: 0.12.32
 
 package:
-  name: ${{name}}
+  name: ${{ name }}
   version: ${{ version }}
 
 source:
-- url: https://github.com/jupyter-server/pycrdt/archive/refs/tags/${{version}}.tar.gz
+- url: https://github.com/jupyter-server/pycrdt/archive/refs/tags/${{ version }}.tar.gz
   sha256: 39177cf5b515875f345a2a1460b44e1b11d30273263f6569d0bed5b8c953205f
 
 build:
   number: 0
+  script:
+  - export RUSTFLAGS="-Z emscripten-wasm-eh -Z link-native-libraries=yes -C link-args=-fwasm-exceptions"
+  - $PYTHON -m pip install . $PIP_ARGS
 
 requirements:
   build:
-  - cross-python_${{target_platform}}
+  - cross-python_${{ target_platform }}
   - cffi
   - setuptools-rust
-  - rust
+  - rust-nightly
   - maturin
-
   host:
   - python
   - openssl

recipes/recipes_emscripten/tiktoken/build.sh

@@ -1,6 +1,8 @@
 #!/bin/bash
 cargo-bundle-licenses --format yaml --output THIRDPARTY.yml
 
-export MATURIN_PYTHON_SYSCONFIGDATA_DIR=${PREFIX}/etc/conda/_sysconfigdata__emscripten_wasm32-emscripten.py
+# export CFLAGS_wasm32-unknown-emscripten="-fwasm-exceptions"
+
+# export RUSTFLAGS="-Z emscripten-wasm-eh -Cpanic=abort. -fwasm-exceptions"
 ${PYTHON} -m pip  install . -vvv
 

recipes/recipes_emscripten/tiktoken/recipe.yaml

@@ -3,11 +3,11 @@ context:
   version: 0.11.0
 
 package:
-  name: ${{name}}
+  name: ${{ name }}
   version: ${{ version }}
 
 source:
-- url: https://pypi.io/packages/source/t/${{ name }}/tiktoken-${{ version }}.tar.gz
+- url: https://pypi.io/packages/source/${{ name[0] }}/${{ name }}/${{ name }}-${{ version }}.tar.gz
   sha256: 3c518641aee1c52247c2b97e74d8d07d780092af79d5911a6ab5e79359d9b06a
 
 build:
@@ -17,14 +17,13 @@ requirements:
   build:
   - cross-python_${{target_platform}}
   - setuptools-rust
-  - rust
+  - rust-nightly
   - cargo-bundle-licenses
   host:
   - python
   run:
   - regex
 
-
 tests:
 - script: pytester
   requirements: