Avoid attempting to test pkg server on Julia <1.7

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 4 to 5.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](https://github.com/actions/setup-python/compare/v4...v5)

---
updated-dependencies:
- dependency-name: actions/setup-python
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/dependabot.yml

@@ -0,0 +1,12 @@
+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for all configuration options:
+# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+
+version: 2
+updates:
+  # Keep dependencies for GitHub Actions up-to-date
+  - package-ecosystem: 'github-actions'
+    directory: '/'
+    schedule:
+      interval: 'daily'

.github/workflows/backup.yml

@@ -12,7 +12,7 @@ jobs:
 
     steps:
       - name: Configure cache
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         with:
           path: |
             ${{ env.GITHUB_WORKSPACE }}
@@ -20,7 +20,7 @@ jobs:
           key: ${{ runner.os }}
 
       - name: Install the correct Python version
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v5
         with:
           python-version: '3.x'
 

.github/workflows/ci.yml

@@ -4,7 +4,6 @@ on:
   push:
     branches:
       - "main"
-      - "master"
     paths-ignore:
       - "README.md"
       - "LICENSE"
@@ -17,10 +16,11 @@ jobs:
   test:
     runs-on: ${{ matrix.os }}
     strategy:
-      fail-fast: false
+      fail-fast: ${{ github.event_name == 'pull_request' }}
       matrix:
         version:
           - "1.0"
+          - "1.6" # Long-term support (LTS) release of Julia
           - "1" # automatically expands to the latest stable 1.x release of Julia
           - nightly
         os:
@@ -33,14 +33,19 @@ jobs:
         pkg-server:
           - ""
           - "pkg.julialang.org"
-        # 32-bit Julia binaries are not available on macOS
         exclude:
+          # 32-bit Julia binaries are not available on macOS
           - os: macOS-latest
             arch: x86
+          # Only Julia 1.7+ can use the package server
+          - version: "1.0"
+            pkg-server: "pkg.julialang.org"
+          - version: "1.6"
+            pkg-server: "pkg.julialang.org"
 
     steps:
       - name: Checkout Example.jl
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           repository: julia-actions/Example.jl
 
@@ -49,7 +54,7 @@ jobs:
         shell: bash
 
       - name: Checkout julia-buildpkg
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           path: ./.github/actions/julia-buildpkg
 
@@ -58,26 +63,28 @@ jobs:
           version: ${{ matrix.version }}
           arch: ${{ matrix.arch }}
 
-      - uses: actions/cache@v1
-        env:
-          cache-name: cache-artifacts
-        with:
-          path: ~/.julia/artifacts
-          key: ${{ runner.os }}-test-${{ env.cache-name }}-${{ hashFiles('**/Project.toml') }}
-          restore-keys: |
-            ${{ runner.os }}-test-${{ env.cache-name }}-
-            ${{ runner.os }}-test-
-            ${{ runner.os }}-
-
       - uses: ./.github/actions/julia-buildpkg
+        with:
+          ignore-no-cache: true
+          localregistry: |
+            https://github.com/JuliaRegistries/General.git
         env:
           JULIA_PKG_SERVER: ${{ matrix.pkg-server }}
 
+      # When using the Pkg server the `Pkg.Registry.add("General")` will add the General registry
+      # via Pkg servers. Using `localregistry` to clone the General registry via HTTPS should be
+      # skipped.
+      - name: Test skipping registry cloning of duplicate repos
+        if: ${{ matrix.pkg-server == 'pkg.julialang.org' }}
+        shell: bash
+        run: |
+          ! test -d $HOME/.julia/registries/General
+
       - uses: julia-actions/julia-runtest@v1
 
       - uses: julia-actions/julia-processcoverage@v1
 
-      - uses: codecov/codecov-action@v1
+      - uses: codecov/codecov-action@v3
         with:
           file: lcov.info
 

action.yml

@@ -21,6 +21,9 @@ inputs:
     description: 'Determine if Pkg uses the cli git executable (Julia >= 1.7). Might be necessary for more complicated SSH setups.
                   Options: true | false. Default : false'
     default: 'false'
+  ignore-no-cache:
+    description: 'Whether to ignore if there appears to be no depot caching. Silences an action notice recommending `julia-actions/cache`.'
+    default: 'false'
 
 runs:
   using: 'composite'
@@ -29,31 +32,46 @@ runs:
     run: echo "JULIA_PKG_SERVER_REGISTRY_PREFERENCE=${JULIA_PKG_SERVER_REGISTRY_PREFERENCE:-eager}" >> ${GITHUB_ENV}
     shell: bash
   - run: |
+      if "${{ inputs.ignore-no-cache }}" == "false" && !isdir(DEPOT_PATH[1])
+          println("::notice title=[julia-buildpkg] Caching of the julia depot was not detected ::Consider using `julia-actions/cache` to speed up runs https://github.com/julia-actions/cache. To ignore, set input `ignore-no-cache: true` ")
+      end
       import Pkg
-      
+
       # Determine if Pkg uses git-cli executable instead of LibGit2
       VERSION >= v"1.7-" && (ENV["JULIA_PKG_USE_CLI_GIT"] = ${{ inputs.git_cli }})
 
       if VERSION < v"1.7-" && ${{ inputs.git_cli }} == true
-        printstyled("::notice::JULIA_PKG_USE_CLI_GIT requires Julia >= 1.7. Using default LibGit2 git-interface instead! \n"; color = :yellow)
+          printstyled("::notice::JULIA_PKG_USE_CLI_GIT requires Julia >= 1.7. Using default LibGit2 git-interface instead! \n"; color = :yellow)
       end
 
-
       if VERSION >= v"1.5-"
-          Pkg.Registry.add("General")
+          function reachable_registries()
+              return if VERSION >= v"1.7-"
+                  Pkg.Registry.reachable_registries()
+              else
+                  [(; name=r.name, repo=r.url) for r in Pkg.Types.collect_registries()]
+              end
+          end
+
+          if !any(r -> r.name == "General", reachable_registries())
+              Pkg.Registry.add("General")
+          end
 
           # If provided add local registries
-          if !isempty("${{ inputs.localregistry }}")
+          if !isempty(ENV["LOCAL_REGISTRY"])
-            local_repos = split("${{ inputs.localregistry }}", "\n") .|> string   
+              local_repos = split(ENV["LOCAL_REGISTRY"], "\n"; keepempty=false) .|> string
-            for repo_url in local_repos
+              for repo_url in local_repos
-              isempty(repo_url) && continue
+                  # https://github.com/JuliaLang/Pkg.jl/issues/3753
-              Pkg.Registry.add(Pkg.RegistrySpec(; url = repo_url))
+                  if !any(r -> r.repo == repo_url, reachable_registries())
-            end
+                      Pkg.Registry.add(Pkg.RegistrySpec(; url = repo_url))
+                  end
+              end
           end
       end
-      
+
       VERSION >= v"1.1.0-rc1" ? retry(Pkg.build)(verbose=true) : retry(Pkg.build)()
     shell: julia --color=yes --project=${{ inputs.project }} {0}
     env:
       JULIA_PKG_PRECOMPILE_AUTO: "${{ inputs.precompile }}"
       GITHUB_TOKEN: ${{ github.token }}
+      LOCAL_REGISTRY: ${{ inputs.localregistry }}