Revert github workflow for 4.14

Author: davesnx

.github/workflows/build-and-test.yml

@@ -4,7 +4,7 @@ on:
   pull_request:
   push:
     branches:
-      - master
+      - 414-LTS
   schedule:
     # Prime the caches every Monday
     - cron: 0 1 * * MON
@@ -20,6 +20,8 @@ jobs:
           - ubuntu-latest
           - macos-latest
           - windows-latest
+        ocaml-compiler:
+          - "4.14"
 
     runs-on: ${{ matrix.os }}
 
@@ -40,33 +42,36 @@ jobs:
           node-version: lts/*
 
       - name: Install npm packages
-        run: yarn install --frozen-lockfile
+        run: yarn --frozen-lockfile
+        working-directory: ocaml-lsp-server/test/e2e
 
       - name: Set-up OCaml
         uses: ocaml/setup-ocaml@v3
         with:
-          ocaml-compiler: "ocaml-base-compiler.5.3.0"
+          ocaml-compiler: ${{ matrix.ocaml-compiler }}
 
       # Remove this pin once a compatible version of Merlin has been released
       - name: Pin dev Merlin
-        run: opam --cli=2.1 pin --with-version=5.6-504 https://github.com/voodoos/merlin.git#main
+        run: opam pin --with-version 4.19-414 https://github.com/voodoos/merlin.git#414-4.19-backports
 
       - name: Build and install dependencies
         run: opam install .
 
-      # the makefile explains why we don't use --with-test
-      # ppx expect is not yet compatible with 5.1 and test output vary from one
-      # compiler to another. We only test on 4.14.
+      # the makefile explains why we don't use test dependencies
       - name: Install test dependencies
+        if: matrix.ocaml-compiler == '4.14'
         run: opam exec -- make install-test-deps
 
       - name: Run build @all
+        if: matrix.ocaml-compiler == '4.14'
         run: opam exec -- make all
 
       - name: Run the unit tests
+        if: matrix.ocaml-compiler == '4.14'
         run: opam exec -- make test-ocaml
 
       - name: Run the template integration tests
+        if: matrix.ocaml-compiler == '4.14'
         run: opam exec -- make test-e2e
 
   coverage:
@@ -81,17 +86,13 @@ jobs:
       - name: Set-up OCaml
         uses: ocaml/setup-ocaml@v3
         with:
-          ocaml-compiler: "ocaml-base-compiler.5.3.0"
+          ocaml-compiler: "4.14"
 
       - name: Set git user
         run: |
           git config --global user.name github-actions[bot]
           git config --global user.email github-actions[bot]@users.noreply.github.com
 
-      # Remove this pin once a compatible version of Merlin has been released
-      - name: Pin dev Merlin
-        run: opam --cli=2.1 pin --with-version=5.6-504 https://github.com/voodoos/merlin.git#main
-
       - name: Install dependencies
         run: |
           opam install . --deps-only