Circumvent conda install bug in >= 23.10.0 (#2146)

Summary:
In newer conda versions, some packages end up not being installed correctly: conda/conda#13412

Selecting the classic solver fixes this issue. This does this for all conda github workflows. Once this is fixed in conda itself we can remove this setting again.

Pull Request resolved: #2146

Reviewed By: saitcakmak

Differential Revision: D52006981

Pulled By: Balandat

fbshipit-source-id: 45e4512b0041d70630e8b0eaf3fc5bdc58ef6809

.github/workflows/deploy_on_release.yml

@@ -82,6 +82,8 @@ jobs:
     - name: Install dependencies
       shell: bash -l {0}
       run: |
+        # avoid conda bug in >=23.10.0: https://github.com/conda/conda/issues/13412
+        conda config --set solver classic
         conda install -y setuptools_scm conda-build conda-verify anaconda-client
         conda install -y scipy sphinx pytest flake8 multipledispatch
         conda install -y -c pytorch pytorch cpuonly

.github/workflows/nightly.yml

@@ -106,6 +106,8 @@ jobs:
       # Don't need most deps for conda build, but need them for testing
       # We do need setuptools_scm though to properly parse the version
       run: |
+        # avoid conda bug in >=23.10.0: https://github.com/conda/conda/issues/13412
+        conda config --set solver classic
         conda install -y scipy multipledispatch setuptools_scm conda-build conda-verify
         conda config --set anaconda_upload no
         conda install -y -c pytorch-nightly pytorch cpuonly

.github/workflows/test.yml

@@ -59,6 +59,8 @@ jobs:
       env:
         ALLOW_LATEST_GPYTORCH_LINOP: true
       run: |
+        # avoid conda bug in >=23.10.0: https://github.com/conda/conda/issues/13412
+        conda config --set solver classic
         conda install pytorch torchvision -c pytorch
         conda install -y pip scipy sphinx pytest flake8
         pip install git+https://github.com/cornellius-gp/linear_operator.git

.github/workflows/test_stable.yml

@@ -45,6 +45,8 @@ jobs:
     - name: Install dependencies
       shell: bash -l {0}
       run: |
+        # avoid conda bug in >=23.10.0: https://github.com/conda/conda/issues/13412
+        conda config --set solver classic
         conda install -y -c pytorch pytorch cpuonly
         conda install -y pip scipy pytest
         conda install -y -c gpytorch gpytorch