respect current juliaup depot path

.github/workflows/tests.yml

@@ -18,6 +18,8 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
         pyversion: ["3.x", "3.8"]
+    env:
+      JULIA_DEPOT_PATH: ${{ github.workspace }}/julia_depot
     steps:
       - uses: actions/checkout@v3
       - name: Set up Python ${{ matrix.pyversion }}
@@ -33,9 +35,15 @@ jobs:
         run: |
           ruff format --check
           ruff check
+      - name: Install juliaup (Linux and macOS only)
+        if: runner.os != 'Windows'
+        shell: bash
+        run: |
+          curl -fsSL https://install.julialang.org | sh -s -- -y
+          export PATH=/home/runner/.juliaup/bin:$PATH
       - name: Test with pytest
         run: |
-          pytest --cov=src test
+          pytest -s --cov=src test
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v4
         env:

src/juliapkg/find_julia.py

@@ -172,7 +172,12 @@ def ju_find_julia(compat=None, install=False):
 
 
 def ju_find_julia_noinstall(compat=None):
-    judir = os.path.join(STATE["depot"], "juliaup")
+    # juliaup does not follow JULIA_DEPOT_PATH, but instead defines its
+    # own env var for overriding ~/.julia
+    ju_depot_path = os.getenv("JULIAUP_DEPOT_PATH")
+    if not ju_depot_path:
+        ju_depot_path = os.path.abspath(os.path.join(os.path.expanduser("~"), ".julia"))
+    judir = os.path.join(ju_depot_path, "juliaup")
     metaname = os.path.join(judir, "juliaup.json")
     arch = get_short_arch()
     if os.path.exists(metaname):