diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 9ff161d4..7b303b32 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -16,9 +16,8 @@ jobs:
       - uses: actions/checkout@v2.3.2
       - shell: bash
         run: rm -rf $(which pkg-config)
-      - uses: cygwin/cygwin-install-action@master
-        with:
-          packages: pkg-config
+
+      - run: gcc --version
 
       - uses: actions/setup-node@v4
         with:
@@ -46,42 +45,28 @@ jobs:
         shell: bash
         if: runner.os  == 'Windows'
         run: |
-          echo "PKG_CONFIG_PATH=${GITHUB_WORKSPACE}\vcpkg_installed\\${VCPKG_DEFAULT_TRIPLET}\lib\pkgconfig" >> $GITHUB_ENV
-
-      # - run: |
-      #     choco install pkgconfiglite
-      - run: PKG_CONFIG_PATH=${GITHUB_WORKSPACE}/vcpkg_installed/${VCPKG_DEFAULT_TRIPLET}/lib/pkgconfig pkg-config --cflags --libs libspngstatic
-
-      # - run: git config --global core.autocrlf input
-      # - uses: cygwin/cygwin-install-action@master
-
-      # - shell: bash
-      #   run: |
-      #     echo "LIBPNG_CFLAGS=lol" >> $GITHUB_ENV
-      #     echo "LIBPNG_LIBS=lol" >> $GITHUB_ENV
-      #     echo "LIBTIFF_LIBS=lol" >> $GITHUB_ENV
-      #     echo "LIBTIFF_CFLAGS=lol" >> $GITHUB_ENV
-      #     echo "LIBJPEG_CFLAGS=lol" >> $GITHUB_ENV
-      #     echo "LIBJPEG_LIBS=lol" >> $GITHUB_ENV
-      #
-      #     # curl -L -o opam64.tar.xz https://github.com/fdopen/opam-repository-mingw/releases/download/0.0.0.2/opam64.tar.xz
-      #     # tar -xf opam64.tar.xz
-      # bash opam64/install.sh
+          echo "PKG_CONFIG_PATH=${GITHUB_WORKSPACE}\vcpkg_installed\${VCPKG_DEFAULT_TRIPLET}\lib\pkgconfig" >> $GITHUB_ENV
+
+      - run: |
+          choco install pkgconfiglite
+
+      - shell: bash
+        run: |
+          echo "LIBPNG_CFLAGS=$(pkg-config --cflags libspng_static)" >> $GITHUB_ENV
+          echo "LIBPNG_LIBS=$(pkg-config --libs libspng_static)" >> $GITHUB_ENV
+          echo "LIBTIFF_LIBS=$(pkg-config --libs libtiff-4)" >> $GITHUB_ENV
+          echo "LIBTIFF_CFLAGS=$(pkg-config --cflags libtiff-4)" >> $GITHUB_ENV
+          echo "LIBJPEG_CFLAGS=$(pkg-config --cflags libturbojpeg)" >> $GITHUB_ENV
+          echo "LIBJPEG_LIBS=$(pkg-config --libs libturbojpeg)" >> $GITHUB_ENV
 
       - uses: ocaml/setup-ocaml@v3
         with:
-          ocaml-compiler: "5.2.0"
+          ocaml-compiler: "arch-x86_64 system-mingw ocaml.5.2.0"
           opam-disable-sandboxing: true
           dune-cache: false
-          # opam-repositories: |
-          #   default: git+https://github.com/fdopen/opam-repository-mingw.git#opam2
-
-      - run: opam switch create 5.2.0-mingw64 arch-x86_64 system-mingw ocaml.5.2.0
 
       - name: Install deps & build
         run: |
-          opam switch 5.2.0-mingw64
-          opam install .  --with-test
           opam exec -- dune build --verbose
 
       - run: opam exec -- dune build --verbose