setup-ocaml 3.0.0

Author: cknitt

.github/workflows/ci.yml

@@ -248,30 +248,19 @@ jobs:
             .opam-env
             D:\cygwin
             D:\.opam
-          key: opam-env-v8-${{ matrix.os }}-${{ hashFiles('dune-project') }}
+          key: opam-env-v10-${{ matrix.os }}-${{ hashFiles('dune-project') }}
 
       - name: Use OCaml ${{matrix.ocaml_compiler}}
-        uses: ocaml/setup-ocaml@v2
-        if: steps.cache-opam-env.outputs.cache-hit != 'true' && matrix.os != 'windows-latest'
+        uses: ocaml/setup-ocaml@v3.0.0
+        if: steps.cache-opam-env.outputs.cache-hit != 'true'
         with:
           ocaml-compiler: ${{matrix.ocaml_compiler}}
+          allow-prerelease-opam: true
           opam-pin: false
-          opam-depext: false
-
-      - name: Use OCaml ${{matrix.ocaml_compiler}} (Windows)
-        uses: ocaml/setup-ocaml@v2
-        if: steps.cache-opam-env.outputs.cache-hit != 'true' && matrix.os == 'windows-latest'
-        with:
-          ocaml-compiler: ocaml-variants.5.2.0+options,ocaml-option-mingw
-          opam-pin: false
-          opam-depext: false
-          opam-repositories: |
-            windows-5.0: https://github.com/dra27/opam-repository.git#windows-5.0
-            sunset: https://github.com/ocaml-opam/opam-repository-mingw.git#sunset
-            default: https://github.com/ocaml/opam-repository.git
 
       - name: Get OPAM environment
         if: steps.cache-opam-env.outputs.cache-hit != 'true'
+        shell: bash
         run: |
           command -v opam | tee .opam-path
           opam env > .opam-env
@@ -292,7 +281,7 @@ jobs:
             .opam-env
             D:\cygwin
             D:\.opam
-          key: opam-env-v8-${{ matrix.os }}-${{ hashFiles('dune-project') }}
+          key: opam-env-v9-${{ matrix.os }}-${{ hashFiles('dune-project') }}
 
       - name: Use cached OPAM environment
         if: steps.cache-opam-env.outputs.cache-hit == 'true'
@@ -365,6 +354,8 @@ jobs:
       - name: "Check if syntax subfolder has changed"
         id: syntax-diff
         shell: bash
+        env:
+          SHELLOPTS: igncr # see https://github.com/ocaml/setup-ocaml/issues/815
         run: |
           if git diff --name-only --exit-code HEAD^ HEAD -- jscomp/syntax; then
             echo "syntax_status=unchanged" >> $GITHUB_ENV