[openwrt/openwrt] CI: build: disable cache of external toolchain/sdk

[LEDE Commits]

ansuel pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/a2973060ea354647e9684c5a386252cce965fcbc

commit a2973060ea354647e9684c5a386252cce965fcbc
Author: Christian Marangi <ansuelsmth at gmail.com>
AuthorDate: Wed Mar 22 00:45:06 2023 +0100

    CI: build: disable cache of external toolchain/sdk
    
    Our buildbot build a different external toolchain/sdk for each build.
    This cause the idea of using the tar hash to cache it broken and wrong.
    This makes the github cache bloated and remove space for ccache cache.
    
    Drop cache for external toolchain/sdk as the feature is broken and cause
    problems to ccache cache.
    
    Signed-off-by: Christian Marangi <ansuelsmth at gmail.com>
---
 .github/workflows/build.yml | 15 ++-------------
 1 file changed, 2 insertions(+), 13 deletions(-)

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 19d3c23403..22286c054e 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -198,13 +198,11 @@ jobs:
           if curl $SUMS_FILE | grep -q ".*openwrt-toolchain.*tar.xz"; then
             TOOLCHAIN_STRING="$( curl $SUMS_FILE | grep ".*openwrt-toolchain.*tar.xz")"
             TOOLCHAIN_FILE=$(echo "$TOOLCHAIN_STRING" | sed -n -e 's/.*\(openwrt-toolchain.*\).tar.xz/\1/p')
-            TOOLCHAIN_SHA256=$(echo "$TOOLCHAIN_STRING" | cut -d ' ' -f 1)
             
             echo "toolchain-type=external_toolchain" >> $GITHUB_OUTPUT
           elif curl $SUMS_FILE | grep -q ".*openwrt-sdk.*tar.xz"; then
             TOOLCHAIN_STRING="$( curl $SUMS_FILE | grep ".*openwrt-sdk.*tar.xz")"
             TOOLCHAIN_FILE=$(echo "$TOOLCHAIN_STRING" | sed -n -e 's/.*\(openwrt-sdk.*\).tar.xz/\1/p')
-            TOOLCHAIN_SHA256=$(echo "$TOOLCHAIN_STRING" | cut -d ' ' -f 1)
 
             echo "toolchain-type=external_sdk" >> $GITHUB_OUTPUT
           else
@@ -212,17 +210,8 @@ jobs:
           fi
 
           echo "TOOLCHAIN_FILE=$TOOLCHAIN_FILE" >> "$GITHUB_ENV"
-          echo "TOOLCHAIN_SHA256=$TOOLCHAIN_SHA256" >> "$GITHUB_ENV"
           echo "TOOLCHAIN_PATH=$TOOLCHAIN_PATH" >> "$GITHUB_ENV"
 
-      - name: Cache external toolchain/sdk
-        if: inputs.build_toolchain == false && steps.parse-toolchain.outputs.toolchain-type != 'internal'
-        id: cache-external-toolchain
-        uses: actions/cache at v3
-        with:
-          path: openwrt/${{ env.TOOLCHAIN_FILE }}
-          key: ${{ env.TOOLCHAIN_FILE }}-${{ steps.parse-toolchain.outputs.toolchain-type }}-${{ env.TOOLCHAIN_SHA256 }}
-
       - name: Cache ccache
         uses: actions/cache at v3
         with:
@@ -232,7 +221,7 @@ jobs:
             ccache-kernel-${{ env.TARGET }}/${{ env.SUBTARGET }}-
 
       - name: Download external toolchain/sdk
-        if: inputs.build_toolchain == false && steps.cache-external-toolchain.outputs.cache-hit != 'true' && steps.parse-toolchain.outputs.toolchain-type != 'internal'
+        if: inputs.build_toolchain == false && steps.parse-toolchain.outputs.toolchain-type != 'internal'
         shell: su buildbot -c "sh -e {0}"
         working-directory: openwrt
         run: |
@@ -284,7 +273,7 @@ jobs:
             --config ${{ env.TARGET }}/${{ env.SUBTARGET }}
 
       - name: Adapt external sdk to external toolchain format
-        if: inputs.build_toolchain == false && steps.parse-toolchain.outputs.toolchain-type == 'external_sdk' && steps.cache-external-toolchain.outputs.cache-hit != 'true'
+        if: inputs.build_toolchain == false && steps.parse-toolchain.outputs.toolchain-type == 'external_sdk'
         shell: su buildbot -c "sh -e {0}"
         working-directory: openwrt
         run: |