fix ci

.github/workflows/action.yml

@@ -0,0 +1,67 @@
+name: Builds, tests, lints
+
+on:
+  - push
+  - pull_request
+
+permissions: read-all
+
+jobs:
+  build:
+    strategy:
+      fail-fast: true
+      matrix:
+        os:
+          - ubuntu-latest
+        ocaml-version:
+          - 4.14
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - name: Checkout tree
+        uses: actions/checkout@v4
+
+      - name: Set-up OCaml
+        uses: ocaml/setup-ocaml@v3
+        with:
+          ocaml-compiler: ${{ matrix.ocaml-version }}
+
+      - run: opam install . --deps-only --with-test
+
+      - run: opam exec -- dune build
+
+      - run: opam exec -- dune runtest
+
+  lint-doc:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout tree
+        uses: actions/checkout@v4
+      - name: Set-up OCaml
+        uses: ocaml/setup-ocaml@v3
+        with:
+          ocaml-compiler: ${{ matrix.ocaml-version }}
+      - uses: ocaml/setup-ocaml/lint-doc@v3
+
+  lint-fmt:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout tree
+        uses: actions/checkout@v4
+      - name: Set-up OCaml
+        uses: ocaml/setup-ocaml@v3
+        with:
+          ocaml-compiler: ${{ matrix.ocaml-version }}
+      - uses: ocaml/setup-ocaml/lint-fmt@v3
+
+  lint-opam:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout tree
+        uses: actions/checkout@v4
+      - name: Set-up OCaml
+        uses: ocaml/setup-ocaml@v3
+        with:
+          ocaml-compiler: ${{ matrix.ocaml-version }}
+      - uses: ocaml/setup-ocaml/lint-opam@v3