From c300d8fcc7cbd386557e9dd2026db5011b52256d Mon Sep 17 00:00:00 2001
From: Egor Tensin <Egor.Tensin@gmail.com>
Date: Sat, 13 Mar 2021 19:11:26 +0300
Subject: workflows: cache Boost downloads

---
 .github/actions/download-boost/action.yml | 20 ++++++++++----------
 .github/workflows/basic.yml               |  8 +++++++-
 .github/workflows/boost_clang_windows.yml |  6 ++++++
 .github/workflows/boost_toolsets.yml      |  6 ++++++
 4 files changed, 29 insertions(+), 11 deletions(-)

diff --git a/.github/actions/download-boost/action.yml b/.github/actions/download-boost/action.yml
index fc0be88..95f5793 100644
--- a/.github/actions/download-boost/action.yml
+++ b/.github/actions/download-boost/action.yml
@@ -11,30 +11,30 @@ runs:
       shell: pwsh
     - run: |
         $parent_dir = Split-Path $env:GITHUB_WORKSPACE
-        $unpack_dir = Join-Path $parent_dir 'boost'
-        echo "BOOST_UNPACK_DIR=$unpack_dir" >> $env:GITHUB_ENV
+        $cache_dir = Join-Path $parent_dir 'boost'
+        echo "BOOST_CACHE_DIR=$cache_dir" >> $env:GITHUB_ENV
       shell: pwsh
     - run: |
         $dir_name = "boost_$($env:BOOST_VERSION.Replace('.', '_'))"
-        $dir = Join-Path $env:BOOST_UNPACK_DIR $dir_name
+        $dir = Join-Path $env:BOOST_CACHE_DIR $dir_name
         echo "BOOST_DIR=$dir" >> $env:GITHUB_ENV
       shell: pwsh
     - run: |
         echo ''
         echo '----------------------------------------------------------------'
-        echo "BOOST_VERSION:    $env:BOOST_VERSION"
-        echo "BOOST_UNPACK_DIR: $env:BOOST_UNPACK_DIR"
-        echo "BOOST_DIR:        $env:BOOST_DIR"
+        echo "BOOST_VERSION:   $env:BOOST_VERSION"
+        echo "BOOST_CACHE_DIR: $env:BOOST_CACHE_DIR"
+        echo "BOOST_DIR:       $env:BOOST_DIR"
         echo '----------------------------------------------------------------'
-        New-Item $env:BOOST_UNPACK_DIR -Type Directory | Out-Null
+        New-Item $env:BOOST_CACHE_DIR -Force -Type Directory | Out-Null
 
         $python = 'python'
-        $unpack_dir = $env:BOOST_UNPACK_DIR
+        $cache_dir = $env:BOOST_CACHE_DIR
 
         if ($env:CI_HOST_CYGWIN) {
             $python = 'python3'
-            $unpack_dir = cygpath.exe -ua $unpack_dir
+            $cache_dir = cygpath.exe -ua $cache_dir
         }
 
-        & $python -m project.boost.download --unpack $unpack_dir -- $env:BOOST_VERSION
+        & $python -m project.boost.download --cache $cache_dir -- $env:BOOST_VERSION
       shell: pwsh
diff --git a/.github/workflows/basic.yml b/.github/workflows/basic.yml
index 6cdf983..2b29792 100644
--- a/.github/workflows/basic.yml
+++ b/.github/workflows/basic.yml
@@ -36,9 +36,15 @@ jobs:
         with:
           python-version: '3.x'
 
+      - name: Cache Boost
+        uses: actions/cache@v2
+        with:
+          path: boost_*.tar.gz
+          key: boost-1.72.0
+
       - name: Build Boost
         run: |
-          python -m project.boost.download 1.72.0
+          python -m project.boost.download --cache . 1.72.0
           python -m project.boost.build -- boost_1_72_0 --with-filesystem
 
       - name: Build example project
diff --git a/.github/workflows/boost_clang_windows.yml b/.github/workflows/boost_clang_windows.yml
index d988269..dca79aa 100644
--- a/.github/workflows/boost_clang_windows.yml
+++ b/.github/workflows/boost_clang_windows.yml
@@ -34,6 +34,12 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
 
+      - name: Cache Boost
+        uses: actions/cache@v2
+        with:
+          path: '${{ runner.workspace }}/boost/boost_*.tar.gz'
+          key: boost-${{ matrix.boost-version }}
+
       - name: Clean up PATH
         uses: egor-tensin/cleanup-path@v1
         if: runner.os == 'Windows'
diff --git a/.github/workflows/boost_toolsets.yml b/.github/workflows/boost_toolsets.yml
index 1319264..165bc47 100644
--- a/.github/workflows/boost_toolsets.yml
+++ b/.github/workflows/boost_toolsets.yml
@@ -110,6 +110,12 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
 
+      - name: Cache Boost
+        uses: actions/cache@v2
+        with:
+          path: '${{ runner.workspace }}/boost/boost_*.tar.gz'
+          key: 'boost-${{ matrix.boost-version }}'
+
       - name: Clean up PATH
         uses: egor-tensin/cleanup-path@v1
         if: runner.os == 'Windows'
-- 
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