fix: install the default registries for version > 1.8 (#55)

Bumps [julia-actions/setup-julia](https://github.com/julia-actions/setup-julia) from 1 to 2.
- [Release notes](https://github.com/julia-actions/setup-julia/releases)
- [Commits](https://github.com/julia-actions/setup-julia/compare/v1...v2)

---
updated-dependencies:
- dependency-name: julia-actions/setup-julia
  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/workflows/backup.yml

@@ -12,7 +12,7 @@ jobs:
 
     steps:
       - name: Configure cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: |
             ${{ env.GITHUB_WORKSPACE }}

.github/workflows/ci.yml

@@ -4,6 +4,7 @@ on:
   push:
     branches:
       - "main"
+      - "master"
     paths-ignore:
       - "README.md"
       - "LICENSE"
@@ -16,11 +17,10 @@ jobs:
   test:
     runs-on: ${{ matrix.os }}
     strategy:
-      fail-fast: ${{ github.event_name == 'pull_request' }}
+      fail-fast: false
       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:
@@ -33,15 +33,10 @@ 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
@@ -58,7 +53,7 @@ jobs:
         with:
           path: ./.github/actions/julia-buildpkg
 
-      - uses: julia-actions/setup-julia@v1
+      - uses: julia-actions/setup-julia@v2
         with:
           version: ${{ matrix.version }}
           arch: ${{ matrix.arch }}
@@ -66,20 +61,9 @@ jobs:
       - 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

action.yml

@@ -33,7 +33,7 @@ runs:
     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` ")
+          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
 
@@ -41,31 +41,25 @@ runs:
       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-"
-          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())
+      if VERSION >= v"1.5-"
+          if VERSION >= v"1.8-"
+              # Install the default registries
+              Pkg.Registry.add()
+          else
               Pkg.Registry.add("General")
           end
 
           # If provided add local registries
-          if !isempty(ENV["LOCAL_REGISTRY"])
-              local_repos = split(ENV["LOCAL_REGISTRY"], "\n"; keepempty=false) .|> string
-              for repo_url in local_repos
-                  # https://github.com/JuliaLang/Pkg.jl/issues/3753
-                  if !any(r -> r.repo == repo_url, reachable_registries())
-                      Pkg.Registry.add(Pkg.RegistrySpec(; url = repo_url))
-                  end
-              end
+          if !isempty("${{ inputs.localregistry }}")
+            local_repos = split("${{ inputs.localregistry }}", "\n") .|> string
+            for repo_url in local_repos
+              isempty(repo_url) && continue
+              Pkg.Registry.add(Pkg.RegistrySpec(; url = repo_url))
+            end
           end
       end
 
@@ -74,4 +68,3 @@ runs:
     env:
       JULIA_PKG_PRECOMPILE_AUTO: "${{ inputs.precompile }}"
       GITHUB_TOKEN: ${{ github.token }}
-      LOCAL_REGISTRY: ${{ inputs.localregistry }}