Switch to mingw-llvm for faster Windows CI

.github/workflows/ci.yml

@@ -18,8 +18,8 @@ jobs:
             cpu: amd64
           - os: windows
             cpu: amd64
-          - os: windows
-            cpu: i386
+          #- os: windows
+          #  cpu: i386
         include:
           - target:
               os: linux
@@ -31,6 +31,10 @@ jobs:
               os: windows
             builder: windows-2019
 
+    defaults:
+      run:
+        shell: bash
+
     name: '${{ matrix.target.os }}-${{ matrix.target.cpu }}-${{ matrix.test_lang }}-(Nim ${{ matrix.branch }})'
     runs-on: ${{ matrix.builder }}
     steps:
@@ -60,13 +64,31 @@ jobs:
           chmod 755 external/bin/gcc external/bin/g++
           echo '${{ github.workspace }}/external/bin' >> $GITHUB_PATH
 
-      - name: Restore MinGW-W64 (Windows) from cache
+      - name: Restore llvm-mingw (Windows) from cache
         if: runner.os == 'Windows'
         id: windows-mingw-cache
         uses: actions/cache@v3
         with:
           path: external/mingw-${{ matrix.target.cpu }}
-          key: 'mingw-${{ matrix.target.cpu }}'
+          key: 'mingw-llvm-17-${{ matrix.target.cpu }}'
+
+      - name: Install llvm-mingw dependency (Windows)
+        if: >
+          steps.windows-mingw-cache.outputs.cache-hit != 'true' &&
+          runner.os == 'Windows'
+        run: |
+          mkdir -p external
+          MINGW_BASE="https://github.com/mstorsjo/llvm-mingw/releases/download/20230905"
+          if [[ '${{ matrix.target.cpu }}' == 'amd64' ]]; then
+            MINGW_URL="$MINGW_BASE/llvm-mingw-20230905-ucrt-x86_64.zip"
+            ARCH=64
+          else
+            MINGW_URL="$MINGW_BASE/llvm-mingw-20230905-ucrt-i686.zip"
+            ARCH=32
+          fi
+          curl -L "$MINGW_URL" -o "external/mingw-${{ matrix.target.cpu }}.zip"
+          7z x -y "external/mingw-${{ matrix.target.cpu }}.zip" -oexternal/mingw-${{ matrix.target.cpu }}/
+          mv external/mingw-${{ matrix.target.cpu }}/**/* ./external/mingw-${{ matrix.target.cpu }}
 
       - name: Restore Nim DLLs dependencies (Windows) from cache
         if: runner.os == 'Windows'
@@ -76,30 +98,10 @@ jobs:
           path: external/dlls-${{ matrix.target.cpu }}
           key: 'dlls-${{ matrix.target.cpu }}'
 
-      - name: Install MinGW64 dependency (Windows)
-        if: >
-          steps.windows-mingw-cache.outputs.cache-hit != 'true' &&
-          runner.os == 'Windows'
-        shell: bash
-        run: |
-          mkdir -p external
-          MINGW_BASE="https://github.com/brechtsanders/winlibs_mingw/releases/download/11.2.0-12.0.1-9.0.0-r1"
-          if [[ '${{ matrix.target.cpu }}' == 'amd64' ]]; then
-            MINGW_URL="$MINGW_BASE/winlibs-x86_64-posix-seh-gcc-11.2.0-mingw-w64-9.0.0-r1.7z"
-            ARCH=64
-          else
-            MINGW_URL="$MINGW_BASE/winlibs-i686-posix-dwarf-gcc-11.2.0-mingw-w64-9.0.0-r1.7z"
-            ARCH=32
-          fi
-          curl -L "$MINGW_URL" -o "external/mingw-${{ matrix.target.cpu }}.7z"
-          7z x -y "external/mingw-${{ matrix.target.cpu }}.7z" -oexternal/
-          mv external/mingw$ARCH external/mingw-${{ matrix.target.cpu }}
-
       - name: Install DLLs dependencies (Windows)
         if: >
           steps.windows-dlls-cache.outputs.cache-hit != 'true' &&
           runner.os == 'Windows'
-        shell: bash
         run: |
           mkdir -p external
           curl -L "https://nim-lang.org/download/windeps.zip" -o external/windeps.zip
@@ -108,14 +110,12 @@ jobs:
       - name: Path to cached dependencies (Windows)
         if: >
           runner.os == 'Windows'
-        shell: bash
         run: |
           echo '${{ github.workspace }}'"/external/mingw-${{ matrix.target.cpu }}/bin" >> $GITHUB_PATH
           echo '${{ github.workspace }}'"/external/dlls-${{ matrix.target.cpu }}" >> $GITHUB_PATH
 
       - name: Get latest nimbus-build-system commit hash
         id: versions
-        shell: bash
         run: |
           getHash() {
             git ls-remote "https://github.com/$1" "${2:-HEAD}" | cut -f 1
@@ -131,7 +131,6 @@ jobs:
           key: '${{ matrix.test_lang }}-${{ matrix.target.os }}-${{ matrix.target.cpu }}-${{ steps.versions.outputs.nimbus_build_system }}'
 
       - name: Build Nim and associated tools
-        shell: bash
         run: |
           curl -O -L -s -S https://raw.githubusercontent.com/status-im/nimbus-build-system/master/scripts/build_nim.sh
           if [[ '${{ matrix.target.cpu }}' == 'amd64' ]]; then
@@ -150,7 +149,6 @@ jobs:
           echo '${{ github.workspace }}/nim/bin' >> $GITHUB_PATH
 
       - name: Run nim-graphql tests
-        shell: bash
         working-directory: nim-graphql
         run: |
           nimble install -y --depsOnly

graphql.nimble

@@ -23,7 +23,8 @@ requires "nim >= 1.2.0",
          "chronicles",
          "https://github.com/status-im/nim-zlib",
          "unittest2",
-         "https://github.com/status-im/nim-chronos#head"
+         "https://github.com/status-im/nim-chronos#head",
+         "https://github.com/status-im/nim-bearssl#head"
 
 proc test(args, path: string, shouldRun = true) =
   # Compilation language is controlled by TEST_LANG