AVX2 for deps in CI

Author: cassiersg

.github/workflows/ci.yml

@@ -53,7 +53,8 @@ jobs:
                   CARGO_TARGET_DIR: ${{ github.workspace }}\cargo_build
                   CIBW_ARCHS_WINDOWS: native
                   CIBW_BUILD_VERBOSITY: "1"
-                  CIBW_ENVIRONMENT: 'RUST_BACKTRACE=full SCALIB_AVX2=1'
+                  # add RUSTFLAGS so that deps build with avx2, needed due to likely bug in setuptools_rust
+                  CIBW_ENVIRONMENT: 'RUST_BACKTRACE=full SCALIB_AVX2=1 RUSTFLAGS="-C target-feature=+avx2"'
                   CIBW_BUILD: "cp37-win_amd64"
                   # I don't know how to make both normal and doctring tests
                   # work with only one command, so I use shell &&.
@@ -77,7 +78,8 @@ jobs:
             #CIBW_MANYLINUX_X86_64_IMAGE: "ghcr.io/simple-crypto/manylinux2014_x86_64:rust-1.51.0"
             CIBW_MANYLINUX_X86_64_IMAGE: "ghcr.io/simple-crypto/manylinux2014_x86_64-clang:rust-1.60.0"
             CIBW_BUILD_VERBOSITY: "1"
-            CIBW_ENVIRONMENT: 'RUST_BACKTRACE=full CARGO_TARGET_DIR=/host${{ github.workspace }}/cargo_build CARGO_HOME=/host${{ github.workspace }}/cargo_home SCALIB_AVX2=1'
+            # add RUSTFLAGS so that deps build with avx2, needed due to likely bug in setuptools_rust
+            CIBW_ENVIRONMENT: 'RUST_BACKTRACE=full CARGO_TARGET_DIR=/host${{ github.workspace }}/cargo_build CARGO_HOME=/host${{ github.workspace }}/cargo_home SCALIB_AVX2=1 RUSTFLAGS="-C target-feature=+avx2"'
             CIBW_BUILD: "cp37-manylinux_x86_64*"
             # I don't know how to make both normal and doctring tests work with only one command,
             # so I use shell &&.

CHANGELOG.rst

@@ -5,6 +5,11 @@ Changelog
 Not released
 ------------
 
+v0.4.2 (2022/05/31)
+-------------------
+
+* Fix AVX2 not used when building rust dependencies.
+
 v0.4.1 (2022/05/31)
 -------------------