[CI] Remove 3.8 jobs

ghstack-source-id: f3abf910bbbb3e8c128e851fec96ca2e358cf818
Pull Request resolved: #2412

.github/workflows/benchmarks.yml

@@ -27,7 +27,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-python@v4
         with:
-          python-version: 3.8
+          python-version: 3.9
       - name: Setup Environment
         run: |
           python3 -m pip install --pre torch --index-url https://download.pytorch.org/whl/nightly/cpu -U 
@@ -84,7 +84,7 @@ jobs:
       - name: Python Setup
         uses: actions/setup-python@v4
         with:
-          python-version: 3.8
+          python-version: 3.9
       - name: Setup git
         run: git config --global --add safe.directory /__w/rl/rl
       - name: setup Path

.github/workflows/benchmarks_pr.yml

@@ -26,7 +26,7 @@ jobs:
       - name: Python Setup
         uses: actions/setup-python@v4
         with:
-          python-version: 3.8
+          python-version: 3.9
       - name: Setup Environment
         run: |
           python3 -m pip install --pre torch --index-url https://download.pytorch.org/whl/nightly/cpu -U 
@@ -95,7 +95,7 @@ jobs:
       - name: Python Setup
         uses: actions/setup-python@v4
         with:
-          python-version: 3.8
+          python-version: 3.9
       - name: Setup git
         run: git config --global --add safe.directory /__w/rl/rl
       - name: setup Path

.github/workflows/docs.yml

@@ -50,7 +50,7 @@ jobs:
         conda activate "${env_dir}"
         
         # 2. upgrade pip, ninja and packaging
-        apt-get install python3.8 python3-pip -y
+        apt-get install python3.9 python3-pip -y
         python3 -m pip install --upgrade pip
         python3 -m pip install setuptools ninja packaging -U
         

.github/workflows/nightly_build.yml

@@ -39,7 +39,7 @@ jobs:
     runs-on: ubuntu-20.04
     strategy:
       matrix:
-        python_version: [["3.8", "cp38-cp38"], ["3.9", "cp39-cp39"], ["3.10", "cp310-cp310"], ["3.11", "cp311-cp311"], ["3.12", "cp312-cp312"]]
+        python_version: [["3.9", "cp39-cp39"], ["3.10", "cp310-cp310"], ["3.11", "cp311-cp311"], ["3.12", "cp312-cp312"]]
         cuda_support: [["", "cpu", "cpu"]]
     container: pytorch/manylinux-${{ matrix.cuda_support[2] }}
     steps:
@@ -79,7 +79,7 @@ jobs:
     runs-on: ubuntu-20.04
     strategy:
       matrix:
-        python_version: [["3.8", "cp38-cp38"], ["3.9", "cp39-cp39"], ["3.10", "cp310-cp310"], ["3.11", "cp311-cp311"], ["3.12", "cp312-cp312"]]
+        python_version: [["3.9", "cp39-cp39"], ["3.10", "cp310-cp310"], ["3.11", "cp311-cp311"], ["3.12", "cp312-cp312"]]
         cuda_support: [["", "cpu", "cpu"]]
     container: pytorch/manylinux-${{ matrix.cuda_support[2] }}
     steps:
@@ -110,7 +110,7 @@ jobs:
     runs-on: ubuntu-20.04
     strategy:
       matrix:
-        python_version: [["3.8", "cp38-cp38"], ["3.9", "cp39-cp39"], ["3.10", "cp310-cp310"], ["3.11", "cp311-cp311"], ["3.12", "cp312-cp312"]]
+        python_version: [["3.9", "cp39-cp39"], ["3.10", "cp310-cp310"], ["3.11", "cp311-cp311"], ["3.12", "cp312-cp312"]]
         cuda_support: [["", "cpu", "cpu"]]
     steps:
       - name: Setup Python
@@ -172,7 +172,7 @@ jobs:
     runs-on: windows-latest
     strategy:
       matrix:
-        python_version: [["3.8", "3.8"], ["3.9", "3.9"], ["3.10", "3.10.3"], ["3.11", "3.11"], ["3.12", "3.12"]]
+        python_version: [["3.9", "3.9"], ["3.10", "3.10.3"], ["3.11", "3.11"], ["3.12", "3.12"]]
     steps:
       - name: Setup Python
         uses: actions/setup-python@v5
@@ -205,7 +205,7 @@ jobs:
     runs-on: windows-latest
     strategy:
       matrix:
-        python_version: [["3.8", "3.8"], ["3.9", "3.9"], ["3.10", "3.10.3"], ["3.11", "3.11"], ["3.12", "3.12"]]
+        python_version: [["3.9", "3.9"], ["3.10", "3.10.3"], ["3.11", "3.11"], ["3.12", "3.12"]]
     steps:
       - name: Setup Python
         uses: actions/setup-python@v5
@@ -262,7 +262,7 @@ jobs:
     runs-on: windows-latest
     strategy:
       matrix:
-        python_version: [["3.8", "3.8"], ["3.9", "3.9"], ["3.10", "3.10.3"], ["3.11", "3.11"], ["3.12", "3.12"]]
+        python_version: [["3.9", "3.9"], ["3.10", "3.10.3"], ["3.11", "3.11"], ["3.12", "3.12"]]
     steps:
       - name: Checkout torchrl
         uses: actions/checkout@v3

.github/workflows/test-linux.yml

@@ -22,7 +22,7 @@ jobs:
   tests-cpu:
     strategy:
       matrix:
-        python_version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        python_version: ["3.9", "3.10", "3.11", "3.12"]
       fail-fast: false
     uses: pytorch/test-infra/.github/workflows/linux_job.yml@main
     with:
@@ -155,7 +155,7 @@ jobs:
   tests-optdeps:
     strategy:
       matrix:
-        python_version: ["3.10"] # "3.8", "3.9", "3.10", "3.11"
+        python_version: ["3.10"] # "3.9", "3.10", "3.11"
         cuda_arch_version: ["12.1"] # "11.6", "11.7"
       fail-fast: false
     uses: pytorch/test-infra/.github/workflows/linux_job.yml@main
@@ -193,7 +193,7 @@ jobs:
   tests-stable-gpu:
     strategy:
       matrix:
-        python_version: ["3.10"] # "3.8", "3.9", "3.10", "3.11"
+        python_version: ["3.10"] # "3.9", "3.10", "3.11"
         cuda_arch_version: ["11.8"] # "11.6", "11.7"
       fail-fast: false
     uses: pytorch/test-infra/.github/workflows/linux_job.yml@main

.github/workflows/wheels-legacy.yml

@@ -19,7 +19,7 @@ jobs:
     runs-on: windows-latest
     strategy:
       matrix:
-        python_version: [["3.8", "3.8"], ["3.9", "3.9"], ["3.10", "3.10.3"], ["3.11", "3.11"],  ["3.12", "3.12"]]
+        python_version: [["3.9", "3.9"], ["3.10", "3.10.3"], ["3.11", "3.11"],  ["3.12", "3.12"]]
     steps:
       - name: Setup Python
         uses: actions/setup-python@v2
@@ -51,7 +51,7 @@ jobs:
     needs: build-wheel-windows
     strategy:
       matrix:
-        python_version: [ "3.8", "3.9", "3.10", "3.11", "3.12" ]
+        python_version: ["3.9", "3.10", "3.11", "3.12" ]
     runs-on: windows-latest
     steps:
       - name: Setup Python