From da2969008bd888dc085e93cb247b3d42cb607e89 Mon Sep 17 00:00:00 2001
From: ayeteadoe <ayeteadoe@gmail.com>
Date: Sun, 3 Aug 2025 16:57:18 -0700
Subject: [PATCH] CI: Enable compiler cache for Windows

---
 .github/actions/cache-restore/action.yml | 27 ++++++++++++++++++++----
 .github/actions/cache-save/action.yml    |  8 +++++--
 .github/workflows/lagom-template.yml     |  6 +++---
 3 files changed, 32 insertions(+), 9 deletions(-)

diff --git a/.github/actions/cache-restore/action.yml b/.github/actions/cache-restore/action.yml
index adea9a2ccdb..0ea1d3aafaa 100644
--- a/.github/actions/cache-restore/action.yml
+++ b/.github/actions/cache-restore/action.yml
@@ -67,16 +67,35 @@ runs:
           "ccache" | "${{ inputs.os }}" | "${{ inputs.arch }}" | "${{ inputs.toolchain }}" | "${{ inputs.cache_key_extra }}" | "${{ inputs.ccache_version }}"
 
     - name: 'Configure Compiler Cache'
-      if: ${{ inputs.ccache_path != '' }}
+      if: ${{ inputs.os != 'Windows' && inputs.ccache_path != '' }}
       shell: bash
+      env:
+        CCACHE_DIR: ${{ inputs.ccache_path }}
       run: |
-          CCACHE_DIR=${{ inputs.ccache_path }} ccache -M 0
+          ccache -M 0
 
           # Reset all ccache modification dates to a known epoch. This provides a baseline that we can prune against.
           find ${{ inputs.ccache_path }} | tac | xargs touch -a -m -d "2018-10-10T09:53:07Z"
 
-          CCACHE_DIR=${{ inputs.ccache_path }} ccache -s
-          CCACHE_DIR=${{ inputs.ccache_path }} ccache -z
+          ccache -s
+          ccache -z
+
+    - name: 'Configure Compiler Cache (Windows)'
+      if: ${{ inputs.os == 'Windows' && inputs.ccache_path != '' }}
+      shell: pwsh
+      env:
+        CCACHE_DIR: ${{ inputs.ccache_path }}
+      run: |
+        ccache -M 0
+        
+        # Reset all ccache modification dates to a known epoch. This provides a baseline that we can prune against.
+        Get-ChildItem -Path "${{ inputs.ccache_path }}" -Recurse | Sort-Object FullName -Descending | ForEach-Object { 
+            $_.LastWriteTime = [DateTime]::Parse("2018-10-10T09:53:07Z")
+            $_.LastAccessTime = [DateTime]::Parse("2018-10-10T09:53:07Z")
+        }
+        
+        ccache -s
+        ccache -z
 
     - name: 'Restore vcpkg cache'
       uses: actions/cache/restore@v4
diff --git a/.github/actions/cache-save/action.yml b/.github/actions/cache-save/action.yml
index 1100ef15b71..09d52497b75 100644
--- a/.github/actions/cache-save/action.yml
+++ b/.github/actions/cache-save/action.yml
@@ -32,9 +32,11 @@ runs:
   steps:
     - name: 'Prune obsolete ccache files'
       shell: bash
+      env:
+        CCACHE_DIR: ${{ inputs.ccache_path }}
       if: ${{ inputs.ccache_path != '' }}
       run: |
-        CCACHE_DIR=${{ inputs.ccache_path }} ccache --evict-older-than=1d
+        ccache --evict-older-than=1d
 
     - name: 'Compiler Cache'
       uses: actions/cache/save@v4
@@ -45,9 +47,11 @@ runs:
 
     - name: 'Cache Stats'
       shell: bash
+      env:
+        CCACHE_DIR: ${{ inputs.ccache_path }}
       if: ${{ inputs.ccache_path != '' }}
       run: |
-        CCACHE_DIR=${{ inputs.ccache_path }} ccache -s
+        ccache -s
 
     - name: 'vcpkg binary cache'
       uses: actions/cache/save@v4
diff --git a/.github/workflows/lagom-template.yml b/.github/workflows/lagom-template.yml
index d86124588f5..6c1f9474e5c 100644
--- a/.github/workflows/lagom-template.yml
+++ b/.github/workflows/lagom-template.yml
@@ -28,7 +28,7 @@ env:
   # github.workspace = /home/runner/work/ladybird/ladybird
   LADYBIRD_SOURCE_DIR: ${{ github.workspace }}
   CCACHE_DIR: ${{ github.workspace }}/.ccache
-  VCPKG_ROOT:  ${{ github.workspace }}/Build/vcpkg
+  VCPKG_ROOT: ${{ github.workspace }}/Build/vcpkg
 
   # Use the compiler version for the ccache compiler hash. Otherwise, if plugins are enabled, the plugin .so files
   # are included in the hash. This results in clean builds on every run as the .so files are rebuilt.
@@ -109,7 +109,7 @@ jobs:
           arch: ${{ inputs.arch }}
           toolchain: ${{ inputs.toolchain }}
           cache_key_extra: ${{ inputs.os_name == 'Windows' && inputs.build_preset || steps.build-parameters.outputs.ccache_key }}
-          ccache_path: ${{ inputs.os_name != 'Windows' && env.CCACHE_DIR }}
+          ccache_path: ${{ env.CCACHE_DIR }}
           download_cache_path: ${{ github.workspace }}/Build/caches
           vcpkg_cache_path: ${{ github.workspace }}/Build/caches/vcpkg-binary-cache
 
@@ -189,7 +189,7 @@ jobs:
         with:
           runner_labels: ${{ inputs.runner_labels }}
           arch: ${{ inputs.arch }}
-          ccache_path: ${{ inputs.os_name != 'Windows' && env.CCACHE_DIR }}
+          ccache_path: ${{ env.CCACHE_DIR }}
           ccache_primary_key: ${{ steps.cache-restore.outputs.ccache_primary_key }}
           vcpkg_cache_path: ${{ github.workspace }}/Build/caches/vcpkg-binary-cache
           vcpkg_cache_primary_key: ${{ steps.cache-restore.outputs.vcpkg_cache_primary_key }}