ci(cache): remove ccache

It was never in action since migrating from travis to github actions.

.github/workflows/ci.yml

@@ -42,7 +42,6 @@ jobs:
             autoconf \
             automake \
             build-essential \
-            ccache \
             cmake \
             flake8 \
             gettext \
@@ -97,7 +96,6 @@ jobs:
         with:
           path: |
             ${{ env.CACHE_NVIM_DEPS_DIR }}
-            ~/.ccache
           key: lint-${{ hashFiles('cmake/*', '**/CMakeLists.txt', '!cmake.deps/**CMakeLists.txt') }}-${{ github.base_ref }}
 
       - name: Build third-party deps
@@ -190,7 +188,7 @@ jobs:
         if: matrix.os == 'linux'
         run: |
           sudo apt-get update
-          sudo apt-get install -y autoconf automake build-essential ccache cmake cpanminus cscope gcc-multilib gdb gettext language-pack-tr libtool-bin locales ninja-build pkg-config python3 python3-pip python3-setuptools unzip valgrind xclip
+          sudo apt-get install -y autoconf automake build-essential cmake cpanminus cscope gcc-multilib gdb gettext language-pack-tr libtool-bin locales ninja-build pkg-config python3 python3-pip python3-setuptools unzip valgrind xclip
 
       - name: Install minimum required version of cmake
         if: matrix.cmake == 'minimum_required'
@@ -222,7 +220,7 @@ jobs:
         if: matrix.os == 'osx'
         run: |
           brew update --quiet
-          brew install automake ccache cpanminus ninja
+          brew install automake cpanminus ninja
 
       - name: Setup interpreter packages
         run: ./ci/install.sh
@@ -232,7 +230,6 @@ jobs:
         with:
           path: |
             ${{ env.CACHE_NVIM_DEPS_DIR }}
-            ~/.ccache
           key: ${{ matrix.runner }}-${{ matrix.flavor }}-${{ matrix.cc }}-${{ hashFiles('cmake/*', 'cmake.deps/**', '**/CMakeLists.txt') }}-${{ github.base_ref }}
 
       - name: Build third-party deps

.github/workflows/env.sh

@@ -8,7 +8,6 @@ $HOME/.local/bin
 EOF
 
 cat <<EOF >> "$GITHUB_ENV"
-CACHE_ENABLE=true
 CI_BUILD_DIR=$GITHUB_WORKSPACE
 BUILD_DIR=$GITHUB_WORKSPACE/build
 DEPS_BUILD_DIR=$HOME/nvim-deps
@@ -20,10 +19,6 @@ CACHE_NVIM_DEPS_DIR=$HOME/.cache/nvim-deps
 CACHE_MARKER=$HOME/.cache/nvim-deps/.ci_cache_marker
 CACHE_UNCRUSTIFY=$HOME/.cache/uncrustify
 UNCRUSTIFY_VERSION=uncrustify-0.75.0
-CCACHE_BASEDIR=$GITHUB_WORKSPACE
-CCACHE_COMPRESS=1
-CCACHE_SLOPPINESS=time_macros,file_macro
-CCACHE_DIR=$HOME/.ccache
 EOF
 
 DEPS_CMAKE_FLAGS=

ci/before_cache.sh

@@ -12,11 +12,6 @@ mkdir -p "${HOME}/.cache"
 echo "before_cache.sh: cache size"
 du -chd 1 "${HOME}/.cache" | sort -rh | head -20
 
-echo "before_cache.sh: ccache stats"
-ccache -s 2>/dev/null || true
-# Do not keep ccache stats (uploaded to cache otherwise; reset initially anyway).
-find "${HOME}/.ccache" -name stats -delete
-
 # Update the third-party dependency cache only if the build was successful.
 if ended_successfully && [ -d "${DEPS_BUILD_DIR}" ]; then
   # Do not cache downloads.  They should not be needed with up-to-date deps.

ci/before_script.sh

@@ -16,11 +16,6 @@ if [[ -n "${LLVM_SYMBOLIZER}" ]] && [[ ! $(type -P "${LLVM_SYMBOLIZER}") ]]; the
   exit 1
 fi
 
-echo "before_script.sh: ccache stats (will be cleared)"
-ccache -s
-# Reset ccache stats for real results in before_cache.
-ccache --zero-stats
-
 # Compile dependencies.
 build_deps
 

ci/common/build.sh

@@ -24,9 +24,7 @@ build_deps() {
   mkdir -p "${DEPS_BUILD_DIR}"
 
   # Use cached dependencies if $CACHE_MARKER exists.
-  if test "${CACHE_ENABLE}" = "false" ; then
-    export CCACHE_RECACHE=1
-  elif test -f "${CACHE_MARKER}" ; then
+  if test -f "${CACHE_MARKER}"; then
     echo "Using third-party dependencies from cache (last update: $(_stat "${CACHE_MARKER}"))."
     cp -a "${CACHE_NVIM_DEPS_DIR}"/. "${DEPS_BUILD_DIR}"
   fi