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Prepare the Aspire CLI bundle once before the CI build, so parallel AppHost builds no longer race to download it #424

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Merged
Vulthil merged 1 commit into from
Sep 30, 2026
Merged

Prepare the Aspire CLI bundle once before the CI build, so parallel AppHost builds no longer race to download it #424

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17 changes: 15 additions & 2 deletions .github/actions/setup-build/action.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -18,15 +18,28 @@ runs:
restore-keys: nuget-

# The AppHost projects resolve DCP and the dashboard from the Aspire CLI bundle
# (AspireUseCliBundle); the build downloads it (~300 MB) into ~/.aspire when it is
# missing. The bundle version follows Aspire.AppHost.Sdk in global.json, hence the key.
# (AspireUseCliBundle) in ~/.aspire. The bundle version follows Aspire.AppHost.Sdk in
# global.json, hence the key.
- uses: actions/cache@v6
id: aspire-bundle
with:
path: |
~/.aspire/versions
~/.aspire/bundle
key: aspire-bundle-${{ runner.os }}-${{ hashFiles('global.json') }}

# On a cache miss the bundle (~300 MB) is prepared here, in one process. Left to the
# build, every AppHost of the parallel build runs the setup itself, and their concurrent
# dnx downloads of the same CLI package collide in the NuGet cache ("being used by
# another process"), which fails the build with ASPIRE009.
- name: Prepare the Aspire CLI bundle
if: steps.aspire-bundle.outputs.cache-hit != 'true'
shell: bash
run: >-
"$DOTNET_ROOT/dnx" --yes
"aspire.cli@$(jq -r '."msbuild-sdks"."Aspire.AppHost.Sdk"' global.json)"
-- setup --install-path "$HOME/.aspire"

- name: Restore local dotnet tools
shell: bash
run: dotnet tool restore
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