ci: split ci.yml into a test workflow and a build test workflow (#22302)

Having a workflow that only builds neovim without running all of the
tests is a cheap way to test the build still works without burning too
much CI time.

8 files changed, 137 insertions, 146 deletions

diff --git a/.github/actions/cache/action.yml b/.github/actions/cache/action.yml
index 819380f351..da36c71a1d 100644
--- a/.github/actions/cache/action.yml
+++ b/.github/actions/cache/action.yml
@@ -18,5 +18,5 @@ runs:
       with:
         path: ${{ env.DEPS_BUILD_DIR }}
         key: ${{ env.CACHE_KEY }}-${{ hashFiles('cmake**', 'ci/**',
-          '.github/workflows/ci.yml', 'CMakeLists.txt',
+          '.github/workflows/test.yml', 'CMakeLists.txt',
           'runtime/CMakeLists.txt', 'src/nvim/**/CMakeLists.txt') }}
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 0000000000..43e91d9ed4
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,118 @@
+name: build
+on:
+  pull_request:
+    branches:
+      - 'master'
+      - 'release-[0-9]+.[0-9]+'
+    paths:
+      - '**.cmake'
+      - '**/CMakeLists.txt'
+      - '**/CMakePresets.json'
+      - 'cmake.*/**'
+      - '.github/**'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref }}
+  cancel-in-progress: true
+
+
+env:
+  BIN_DIR: ${{ github.workspace }}/bin
+  INSTALL_PREFIX: ${{ github.workspace }}/nvim-install
+
+jobs:
+  macos-universal:
+    runs-on: macos-latest
+    timeout-minutes: 20
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Install dependencies
+        run: ./.github/scripts/install_deps.sh
+
+      - run: printf 'NVIM_BUILD_TYPE=Release\n' >> $GITHUB_ENV
+
+      - name: Build universal binary
+        run: ./.github/scripts/build_universal_macos.sh
+
+  old-cmake:
+    name: Test oldest supported cmake
+    runs-on: ubuntu-22.04
+    timeout-minutes: 15
+    env:
+      CMAKE_URL: 'https://cmake.org/files/v3.10/cmake-3.10.0-Linux-x86_64.sh'
+      CMAKE_VERSION: '3.10.0'
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set up environment
+        run: echo "$BIN_DIR" >> $GITHUB_PATH
+
+      - name: Install dependencies
+        run: ./.github/scripts/install_deps.sh
+
+      - name: Install minimum required version of cmake
+        run: |
+          curl --retry 5 --silent --show-error --fail -o /tmp/cmake-installer.sh "$CMAKE_URL"
+          mkdir -p "$BIN_DIR" /opt/cmake-custom
+          chmod a+x /tmp/cmake-installer.sh
+          /tmp/cmake-installer.sh --prefix=/opt/cmake-custom --skip-license
+          ln -sfn /opt/cmake-custom/bin/cmake "$BIN_DIR/cmake"
+          cmake_version="$(cmake --version | head -1)"
+          echo "$cmake_version" | grep -qF "cmake version $CMAKE_VERSION" || {
+            echo "Unexpected CMake version: $cmake_version"
+            exit 1
+          }
+
+      - name: Build dependencies
+        run: make deps
+
+      - name: Build
+        run: make CMAKE_FLAGS="-D CI_BUILD=ON -D CMAKE_INSTALL_PREFIX:PATH=$INSTALL_PREFIX"
+
+      - name: Install
+        run: make install
+
+  with-external-deps:
+    runs-on: ubuntu-22.04
+    timeout-minutes: 10
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Install dependencies
+        run: |
+          sudo add-apt-repository ppa:neovim-ppa/stable
+          ./.github/scripts/install_deps.sh
+          sudo apt-get install -y \
+            libluajit-5.1-dev \
+            libmsgpack-dev \
+            libtermkey-dev \
+            libtree-sitter-dev \
+            libunibilium-dev \
+            libuv1-dev \
+            lua-busted \
+            lua-filesystem \
+            lua-inspect \
+            lua-lpeg \
+            lua-nvim \
+            luajit
+            # libvterm-dev \
+            # lua-luv-dev
+
+            # Remove comments from packages once we start using these external
+            # dependencies.
+
+      - name: Build third-party deps
+        run: |
+          # Ideally all dependencies should external for this job, but some
+          # dependencies don't have the required version available. We use the
+          # bundled versions for these with the hopes of being able to remove them
+          # later on.
+          cmake -S cmake.deps -B .deps -G Ninja -D USE_BUNDLED=OFF -D USE_BUNDLED_LUV=ON -D USE_BUNDLED_LIBVTERM=ON
+          cmake --build .deps
+
+      - name: Build
+        run: |
+          cmake -B build -G Ninja
+          cmake --build build
+
diff --git a/.github/workflows/ci.yml b/.github/workflows/test.yml
index 455c712948..bfe6a22390 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/test.yml
@@ -1,4 +1,4 @@
-name: CI
+name: test
 on:
   push:
     branches:
@@ -99,6 +99,13 @@ jobs:
         run: cmake --build build --target lintsh
 
       - if: success() || failure() && steps.abort_job.outputs.status == 'success'
+        name: clint.py
+        run: cmake --build build --target lintc-clint
+
+      - if: success() || failure() && steps.abort_job.outputs.status == 'success'
+        run: cmake --build build --target clang-tidy
+
+      - if: success() || failure() && steps.abort_job.outputs.status == 'success'
         name: uncrustify
         run: |
           ${{ env.CACHE_UNCRUSTIFY }} -c ./src/uncrustify.cfg -q --replace --no-backup $(find ./src/nvim -name "*.[ch]")
@@ -115,69 +122,6 @@ jobs:
         name: check uncrustify
         run: git diff --color --exit-code
 
-  lintc:
-    # This job tests two things: it lints the code but also builds neovim using
-    # system dependencies instead of bundled dependencies. This is to make sure
-    # we are able to build neovim without pigeonholing ourselves into specifics
-    # of the bundled dependencies.
-
-    if: (github.event_name == 'pull_request' && github.base_ref == 'master') || (github.event_name == 'push' && github.ref == 'refs/heads/master')
-    runs-on: ubuntu-22.04
-    timeout-minutes: 10
-    steps:
-      - uses: actions/checkout@v3
-
-      - name: Install dependencies
-        run: |
-          sudo add-apt-repository ppa:neovim-ppa/stable
-          ./.github/scripts/install_deps.sh
-          sudo apt-get install -y \
-            libluajit-5.1-dev \
-            libmsgpack-dev \
-            libtermkey-dev \
-            libtree-sitter-dev \
-            libunibilium-dev \
-            libuv1-dev \
-            lua-busted \
-            lua-filesystem \
-            lua-inspect \
-            lua-lpeg \
-            lua-nvim \
-            luajit
-            # libvterm-dev \
-            # lua-luv-dev
-
-            # Remove comments from packages once we start using these external
-            # dependencies.
-
-      - uses: ./.github/actions/cache
-
-      - name: Build third-party deps
-        run: |
-          # Ideally all dependencies should external for this job, but some
-          # dependencies don't have the required version available. We use the
-          # bundled versions for these with the hopes of being able to remove them
-          # later on.
-          cmake -S cmake.deps -B $DEPS_BUILD_DIR -G Ninja -D USE_BUNDLED=OFF -D USE_BUNDLED_LUV=ON -D USE_BUNDLED_LIBVTERM=ON
-          cmake --build $DEPS_BUILD_DIR
-
-      - name: Build
-        run: |
-          cmake -B build -G Ninja
-          cmake --build build
-
-      - if: "!cancelled()"
-        name: Determine if run should be aborted
-        id: abort_job
-        run: echo "status=${{ job.status }}" >> $GITHUB_OUTPUT
-
-      - if: success() || failure() && steps.abort_job.outputs.status == 'success'
-        name: clint.py
-        run: cmake --build build --target lintc-clint
-
-      - if: success() || failure() && steps.abort_job.outputs.status == 'success'
-        run: cmake --build build --target clang-tidy
-
   posix:
     name: ${{ matrix.runner }} ${{ matrix.flavor }} (cc=${{ matrix.cc }})
     strategy:
@@ -352,46 +296,6 @@ jobs:
           echo 'Core dumps found'
           exit 1
 
-  old_cmake:
-    name: Test oldest supported cmake
-    runs-on: ubuntu-22.04
-    timeout-minutes: 15
-    env:
-      CMAKE_URL: 'https://cmake.org/files/v3.10/cmake-3.10.0-Linux-x86_64.sh'
-      CMAKE_VERSION: '3.10.0'
-    steps:
-      - uses: actions/checkout@v3
-
-      - name: Set up environment
-        run: echo "$BIN_DIR" >> $GITHUB_PATH
-
-      - name: Install dependencies
-        run: ./.github/scripts/install_deps.sh
-
-      - name: Install minimum required version of cmake
-        run: |
-          curl --retry 5 --silent --show-error --fail -o /tmp/cmake-installer.sh "$CMAKE_URL"
-          mkdir -p "$BIN_DIR" /opt/cmake-custom
-          chmod a+x /tmp/cmake-installer.sh
-          /tmp/cmake-installer.sh --prefix=/opt/cmake-custom --skip-license
-          ln -sfn /opt/cmake-custom/bin/cmake "$BIN_DIR/cmake"
-          cmake_version="$(cmake --version | head -1)"
-          echo "$cmake_version" | grep -qF "cmake version $CMAKE_VERSION" || {
-            echo "Unexpected CMake version: $cmake_version"
-            exit 1
-          }
-
-      - uses: ./.github/actions/cache
-
-      - name: Build dependencies
-        run: make deps
-
-      - name: Build
-        run: make CMAKE_FLAGS="-D CI_BUILD=ON -D CMAKE_INSTALL_PREFIX:PATH=$INSTALL_PREFIX"
-
-      - name: Install
-        run: make install
-
   windows:
     runs-on: windows-2019
     timeout-minutes: 45
diff --git a/.github/workflows/universal_macos.yml b/.github/workflows/universal_macos.yml
deleted file mode 100644
index 765cea63c1..0000000000
--- a/.github/workflows/universal_macos.yml
+++ /dev/null
@@ -1,32 +0,0 @@
-name: macos-universal
-on:
-  pull_request:
-    branches:
-      - 'master'
-      - 'release-[0-9]+.[0-9]+'
-    paths:
-      - '**.cmake'
-      - '**/CMakeLists.txt'
-      - '**/CMakePresets.json'
-      - 'cmake.*/**'
-      - '.github/scripts/build_universal_macos.sh'
-      - '.github/workflow/universal_macos.yml'
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.head_ref }}
-  cancel-in-progress: true
-
-jobs:
-  macos-universal:
-    runs-on: macos-latest
-    timeout-minutes: 20
-    steps:
-      - uses: actions/checkout@v3
-
-      - name: Install dependencies
-        run: ./.github/scripts/install_deps.sh
-
-      - run: printf 'NVIM_BUILD_TYPE=Release\n' >> $GITHUB_ENV
-
-      - name: Build universal binary
-        run: ./.github/scripts/build_universal_macos.sh
diff --git a/CMakeLists.txt b/CMakeLists.txt
index d12b71a651..a608e42dab 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -3,7 +3,7 @@
 #   best practices (3.0+): https://gist.github.com/mbinna/c61dbb39bca0e4fb7d1f73b0d66a4fd1
 #   pitfalls: https://izzys.casa/2019/02/everything-you-never-wanted-to-know-about-cmake/
 
-# Version should match the tested CMAKE_URL in .github/workflows/ci.yml.
+# Version should match the tested CMAKE_URL in .github/workflows/build.yml.
 cmake_minimum_required(VERSION 3.10)
 
 # Can be removed once minimum version is at least 3.15
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index fe2cdb8a36..ca13e1b956 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -130,7 +130,7 @@ Each pull request must pass the automated builds on [Cirrus CI] and [GitHub Acti
   [style](#style). (See [#3174][3174] for background.)
 - CI for FreeBSD runs on [Cirrus CI].
 - To see CI results faster in your PR, you can temporarily set `TEST_FILE` in
-  [ci.yml](https://github.com/neovim/neovim/blob/e35b9020b16985eee26e942f9a3f6b045bc3809b/.github/workflows/ci.yml#L205).
+  [test.yml](https://github.com/neovim/neovim/blob/e35b9020b16985eee26e942f9a3f6b045bc3809b/.github/workflows/test.yml#L29).
 
 ### Clang scan-build
 
diff --git a/MAINTAIN.md b/MAINTAIN.md
index 1b3176f4ff..629327a67a 100644
--- a/MAINTAIN.md
+++ b/MAINTAIN.md
@@ -117,12 +117,13 @@ our CI strategy be. The following guidelines have worked well for us so far:
   prefer `-latest` tags so we don't need to manually bump the versions. An
   example of a special-purpose workflow is `labeler.yml`.
 
-* For our testing jobs, which is currently only `ci.yml`, prefer to use the
-  latest stable (i.e. non-beta) version explicitly. Avoid using the `-latest`
-  tags here as it makes it difficult to determine from an unrelated PR if a
-  failure is due to the PR itself or due to GitHub bumping the `-latest` tag
-  without our knowledge. There's also a high risk that automatic bumping the CI
-  versions will fail due to manual work being required from experience.
+* For our testing jobs, which are in `test.yml` and `build.yml`, prefer to use
+  the latest stable (i.e. non-beta) version explicitly. Avoid using the
+  `-latest` tags here as it makes it difficult to determine from an unrelated
+  PR if a failure is due to the PR itself or due to GitHub bumping the
+  `-latest` tag without our knowledge. There's also a high risk that automatic
+  bumping the CI versions will fail due to manual work being required from
+  experience.
 
 * For our release job, which is `release.yml`, prefer to use the oldest stable
   (i.e. non-deprecated) versions available. The reason is that we're trying to
diff --git a/README.md b/README.md
index 3f2e158900..0ccb097ee1 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@
   <a href="https://app.element.io/#/room/#neovim:matrix.org">Chat</a>
 </h1>
 
-[![GitHub CI](https://github.com/neovim/neovim/actions/workflows/ci.yml/badge.svg?event=push&branch=master)](https://github.com/neovim/neovim/actions?query=workflow%3ACI+branch%3Amaster+event%3Apush)
+[![GitHub CI](https://github.com/neovim/neovim/actions/workflows/build.yml/badge.svg?event=push&branch=master)](https://github.com/neovim/neovim/actions?query=workflow%3ACI+branch%3Amaster+event%3Apush)
 [![Coverity Scan analysis](https://scan.coverity.com/projects/2227/badge.svg)](https://scan.coverity.com/projects/2227)
 [![Clang analysis](https://neovim.io/doc/reports/clang/badge.svg)](https://neovim.io/doc/reports/clang)
 [![PVS-Studio analysis](https://neovim.io/doc/reports/pvs/badge.svg)](https://neovim.io/doc/reports/pvs/PVS-studio.html.d)