From 83bc71acf0577f450c9467312d1a2cf7c135d6ac Mon Sep 17 00:00:00 2001
From: Stefan Krastanov <stefan@krastanov.org>
Date: Fri, 26 Jan 2024 21:15:58 -0500
Subject: [PATCH] start using julia-actions/cache and clean up buildkite (#230)

---
 .buildkite/pipeline.yml                | 20 ++++++++++++++++++--
 .github/workflows/ci-julia-nightly.yml | 11 +----------
 .github/workflows/ci.yml               | 12 ++----------
 .github/workflows/downgrade.yml        |  1 +
 .github/workflows/invalidations.yml    |  1 +
 5 files changed, 23 insertions(+), 22 deletions(-)

diff --git a/.buildkite/pipeline.yml b/.buildkite/pipeline.yml
index 0fd0fc630..93758d30b 100644
--- a/.buildkite/pipeline.yml
+++ b/.buildkite/pipeline.yml
@@ -5,7 +5,7 @@ env:
   PYCALL_DEBUG_BUILD: yes
   
 steps:
-  - label: "CI Buildkite"
+  - label: "Package Tests CI on Buildkite"
     plugins:
       - JuliaCI/julia#v1:
           version: "1"
@@ -24,6 +24,22 @@ steps:
         Pkg.build("PyCall");
         println("and now we dev the current package");
         pkg"dev .";'
+  - label: "Downstream Breakage CI on Buildkite"
+    plugins:
+      - JuliaCI/julia#v1:
+          version: "1"
+      - QuantumSavory/julia-xvfb#v1:
+    command:
+      - echo "Julia depot path $${JULIA_DEPOT_PATH}"
+      - mkdir -p "$${JULIA_DEPOT_PATH}/conda/3/x86_64"
+      - julia --project='~' -e '
+        using Pkg;
+        ENV["PYTHON"] = "";
+        Pkg.add("Conda");
+        Pkg.add("PyCall");
+        Pkg.build("PyCall");
+        println("and now we dev the current package");
+        pkg"dev .";'
       - julia --project='~' -e '
         using Pkg;
         ENV["PYTHON"] = "";
@@ -32,4 +48,4 @@ steps:
         Pkg.test("QuantumSavory");
         Pkg.add("BPGates");
         Pkg.build("BPGates");
-        Pkg.test("BPGates");'
\ No newline at end of file
+        Pkg.test("BPGates");'
diff --git a/.github/workflows/ci-julia-nightly.yml b/.github/workflows/ci-julia-nightly.yml
index 999662b4c..1203529a1 100644
--- a/.github/workflows/ci-julia-nightly.yml
+++ b/.github/workflows/ci-julia-nightly.yml
@@ -30,16 +30,7 @@ jobs:
         with:
           version: ${{ matrix.version }}
           arch: ${{ matrix.arch }}
-      - uses: actions/cache@v4
-        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: julia-actions/cache@v1
       - uses: julia-actions/julia-buildpkg@v1
       - uses: julia-actions/julia-runtest@v1
         env:
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e45f8971a..6ada5649f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -29,16 +29,7 @@ jobs:
         with:
           version: ${{ matrix.version }}
           arch: ${{ matrix.arch }}
-      - uses: actions/cache@v4
-        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: julia-actions/cache@v1
       - uses: julia-actions/julia-buildpkg@v1
       - uses: julia-actions/julia-runtest@v1
         env:
@@ -55,6 +46,7 @@ jobs:
       - uses: julia-actions/setup-julia@v1
         with:
           version: '1'
+      - uses: julia-actions/cache@v1
       - uses: julia-actions/julia-buildpkg@v1
       - uses: julia-actions/julia-docdeploy@v1
         env:
diff --git a/.github/workflows/downgrade.yml b/.github/workflows/downgrade.yml
index 761a4961a..b12c8448c 100644
--- a/.github/workflows/downgrade.yml
+++ b/.github/workflows/downgrade.yml
@@ -24,5 +24,6 @@ jobs:
       - uses: cjdoris/julia-downgrade-compat-action@v1
         with:
           skip: Pkg,TOML,InteractiveUtils,Random,LinearAlgebra
+      - uses: julia-actions/cache@v1
       - uses: julia-actions/julia-buildpkg@v1
       - uses: julia-actions/julia-runtest@v1
\ No newline at end of file
diff --git a/.github/workflows/invalidations.yml b/.github/workflows/invalidations.yml
index 7e0aefe01..e6aade0e6 100644
--- a/.github/workflows/invalidations.yml
+++ b/.github/workflows/invalidations.yml
@@ -20,6 +20,7 @@ jobs:
       with:
         version: '1'
     - uses: actions/checkout@v4
+    - uses: julia-actions/cache@v1
     - uses: julia-actions/julia-buildpkg@v1
     - uses: julia-actions/julia-invalidations@v1
       id: invs_pr