replace conda with uv

Author: lachlangrose

.github/workflows/tester.yml

@@ -7,39 +7,53 @@ on:
     paths:
       - '**.py'
       - .github/workflows/tester.yml
-
   pull_request:
     branches:
       - master
     paths:
       - '**.py'
       - .github/workflows/tester.yml
   workflow_dispatch:
+
 jobs:
   continuous-integration:
     name: Continuous integration ${{ matrix.os }} python ${{ matrix.python-version }}
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
-        os: ${{ fromJSON(vars.BUILD_OS)}}
-        python-version: ${{ fromJSON(vars.PYTHON_VERSIONS)}}
+        os: ${{ fromJSON(vars.BUILD_OS) }}
+        python-version: ${{ fromJSON(vars.PYTHON_VERSIONS) }}
+        
     steps:
       - uses: actions/checkout@v4
-      - uses: conda-incubator/setup-miniconda@v3
 
+      # 1. Setup uv instantly (replaces the heavy setup-miniconda)
+      - name: Set up uv
+        uses: astral-sh/setup-uv@v3
         with:
-          python-version: ${{ matrix.python }}
-      - name: Installing dependencies
-        shell: bash -l {0}
-        run: |
-          conda install -c conda-forge numpy scipy scikit-image scikit-learn pytest networkx osqp matplotlib -y
-      - name: Building and install
-        shell: bash -l {0}
+          version: "latest"
+
+      # 2. Pin the exact Python version from your matrix variable
+      - name: Set up Python ${{ matrix.matrix.python-version }}
+        run: uv python install ${{ matrix.python-version }}
+
+      # 3. Create a clean virtual environment and install everything at once
+      - name: Install dependencies and library
         run: |
-          pip install . --user
-          pip install geoh5py --user
+          uv pip install --system \
+            numpy \
+            scipy \
+            scikit-image \
+            scikit-learn \
+            pytest \
+            networkx \
+            osqp \
+            matplotlib \
+            geoh5py \
+            -e .
+
+      # 4. Run pytest directly inside the environment
       - name: pytest
-        shell: bash -l {0}
         run: |
           pytest