pin setuptools to < 60.0 (#113)

* pin setuptools to < 60.0

* typo

* try again

* change conda setuptools

* fix py 3.8

* remove old MANIFEST file

.github/workflows/build.yml

@@ -43,7 +43,7 @@ jobs:
           channels: conda-forge,anaconda
       - name: Install dependencies
         run: |
-          conda install scipy numpy pytest
+          conda install scipy numpy pytest 'setuptools<=60'
       - name: Test
         run: |
           python legacy_setup.py install --scs --openmp
@@ -92,7 +92,9 @@ jobs:
           else
             BLAS_PKGS="blas-devel=*=*openblas"
           fi
-          if [[ "$PYTHON_VERSION" == "3.8" ]] || [[ "$PYTHON_VERSION" == "3.9" ]]; then
+          if [[ "$PYTHON_VERSION" == "3.8" ]]; then
+            conda install scipy=1.5 numpy=1.19 pytest $BLAS_PKGS pkg-config 'setuptools<=60'
+          elif [[ "$PYTHON_VERSION" == "3.9" ]]; then
             conda install scipy=1.5 numpy=1.19 pytest $BLAS_PKGS pkg-config
           elif [[ "$PYTHON_VERSION" == "3.10" ]]; then
             conda install scipy=1.7 numpy=1.21 pytest $BLAS_PKGS pkg-config