ci: drop Linux i386 support

.github/actions/install_nim/action.yml

@@ -16,27 +16,6 @@ inputs:
 runs:
   using: "composite"
   steps:
-    - name: Install build dependencies (Linux i386)
-      shell: ${{ inputs.shell }}
-      if: inputs.os == 'Linux' && inputs.cpu == 'i386'
-      run: |
-        sudo dpkg --add-architecture i386
-        sudo apt-get update -qq
-        sudo DEBIAN_FRONTEND='noninteractive' apt-get install \
-          --no-install-recommends -yq gcc-multilib g++-multilib \
-          libssl-dev:i386
-        mkdir -p external/bin
-        cat << EOF > external/bin/gcc
-        #!/bin/bash
-        exec $(which gcc) -m32 "\$@"
-        EOF
-        cat << EOF > external/bin/g++
-        #!/bin/bash
-        exec $(which g++) -m32 "\$@"
-        EOF
-        chmod 755 external/bin/gcc external/bin/g++
-        echo '${{ github.workspace }}/external/bin' >> $GITHUB_PATH
-
     - name: MSYS2 (Windows i386)
       if: inputs.os == 'Windows' && inputs.cpu == 'i386'
       uses: msys2/setup-msys2@v2

.github/workflows/test.yml

@@ -21,8 +21,6 @@ jobs:
         platform:
           - os: linux
             cpu: amd64
-          - os: linux
-            cpu: i386
           - os: linux-gcc-14
             cpu: amd64
           - os: macos-14

README.md

@@ -51,8 +51,7 @@ BoringSSL is a C++ library, so [`config.nims`](config.nims) overrides the linker
 
 ### Platform notes
 
-- **Windows**: builds with `clang` (llvm-mingw) and assembles `.asm` files with [NASM](https://www.nasm.us/). NASM must be on `PATH`. Generated assembly objects and their content hashes are stored under the configured Nim cache; the package source may be read-only.
-- **Linux i386**: requires `-msse2` (set automatically).
+- **Windows**: builds with `clang` (llvm-mingw) and assembles `.asm` files with [NASM](https://www.nasm.us/). NASM must be on `PATH`.
 - **Threads**: bindings are built with `--threads:on` for testing; downstream consumers may build either way.
 
 ## Regenerating bindings
@@ -123,7 +122,7 @@ Pass extra flags through `NIMFLAGS`, e.g.:
 NIMFLAGS="--mm:orc" nimble test
 ```
 
-CI exercises Linux (amd64, i386, gcc-14), macOS (arm64) and Windows (amd64) against Nim 2.2 with both `refc` and `orc` memory managers.
+CI exercises Linux amd64 (default GCC and GCC 14), macOS (arm64) and Windows (amd64) against Nim 2.2 with both `refc` and `orc` memory managers.
 
 ## Formatting