Merge #3687

3687: Install libsecp256k1 on Windows  r=amesgen a=amesgen

Closes #3678, alternative to #3683

This installs the prebuilt libsecp256k1 DLL built via input-output-hk/haskell.nix#1424.

Co-authored-by: Alexander Esgen <alexander.esgen@iohk.io>
Co-authored-by: Marcin Szamotulski <coot@coot.me>
Co-authored-by: iohk-bors[bot] <43231472+iohk-bors[bot]@users.noreply.github.com>

.github/workflows/build.yml

@@ -68,7 +68,7 @@ jobs:
         tar zxvf libsodium-1.0.18-mingw.tar.gz
         sed -i "s|/d/a/1/s/|$RUNNER_TEMP_FWD\/|g" libsodium-win64/lib/pkgconfig/libsodium.pc
 
-        export PKG_CONFIG_PATH="$(readlink -f libsodium-win64/lib/pkgconfig)"
+        export PKG_CONFIG_PATH="$(readlink -f libsodium-win64/lib/pkgconfig | sed 's|^/d|D:|g' | tr / '\\')"
         echo "PKG_CONFIG_PATH=$PKG_CONFIG_PATH"
         echo "PKG_CONFIG_PATH=$PKG_CONFIG_PATH" >> $GITHUB_ENV
 
@@ -105,6 +105,34 @@ jobs:
         sudo make install
         cd ../..
 
+    - name: Install secp256k1 (Windows)
+      if: matrix.os == 'windows-latest'
+      env:
+        RUNNER_TEMP: ${{ runner.temp }}
+      run: |
+        echo "RUNNER_TEMP=$RUNNER_TEMP"
+        cd "$RUNNER_TEMP"
+
+        RUNNER_TEMP_FWD="$(echo "$RUNNER_TEMP" | sed 's|\\|/|g')"
+
+        curl -Ls \
+          --connect-timeout 5 \
+          --max-time 10 \
+          --retry 5 \
+          --retry-delay 0 \
+          --retry-max-time 40 \
+          https://hydra.iohk.io/job/Cardano/haskell-nix/windows-secp256k1/latest/download/1 -o secp256k1.zip
+        mkdir secp256k1
+        cd secp256k1
+        unzip ../secp256k1.zip
+        cd ..
+        export PKG_CONFIG_PATH="$PKG_CONFIG_PATH;$(readlink -f secp256k1/lib/pkgconfig | sed 's|^/d|D:|g' | tr / '\\')"
+        echo "PKG_CONFIG_PATH=$PKG_CONFIG_PATH"
+        echo "PKG_CONFIG_PATH=$PKG_CONFIG_PATH" >> $GITHUB_ENV
+        export SECP256K1_PATH="$(readlink -f secp256k1/bin | sed 's|^/d|D:|g' | tr / '\\')"
+        echo "SECP256K1_PATH=$SECP256K1_PATH"
+        echo "$SECP256K1_PATH" >> $GITHUB_PATH
+
     - name: Set up temp directory
       env:
         RUNNER_TEMP: ${{ runner.temp }}

bors.toml

@@ -1,5 +1,7 @@
 status = [
   "ci/hydra:Cardano:ouroboros-network:required",
+  "build (8.10.7, ubuntu-20.04)",
+  "build (8.10.7, windows-latest)",
 ]
 timeout_sec = 7200
 required_approvals = 1