Add separate step for reticulate to prefer the Miniconda environment

Author: juliasilge

.github/workflows/R-CMD-check.yaml

@@ -25,15 +25,11 @@ jobs:
           - {os: ubuntu-16.04,   r: 'release', rspm: "https://packagemanager.rstudio.com/cran/__linux__/xenial/latest"}
           - {os: ubuntu-16.04,   r: 'oldrel',  rspm: "https://packagemanager.rstudio.com/cran/__linux__/xenial/latest"}
           - {os: ubuntu-16.04,   r: '3.5',     rspm: "https://packagemanager.rstudio.com/cran/__linux__/xenial/latest"}
-        include:
-          - os: macOS-latest
-            miniconda: '../miniconda/'
 
     env:
       R_REMOTES_NO_ERRORS_FROM_WARNINGS: true
       RSPM: ${{ matrix.config.rspm }}
       GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
-      RETICULATE_MINICONDA_PATH: ${{ matrix.miniconda }}
 
     steps:
       - uses: actions/checkout@v2
@@ -74,19 +70,18 @@ jobs:
           remotes::install_cran("rcmdcheck")
         shell: Rscript {0}
 
-      - name: Install TensorFlow on macOS
-        if: runner.os == 'macOS'
+      - name: Install Miniconda
         run: |
-          reticulate::install_miniconda()
-          reticulate::conda_create('r-reticulate', packages = 'python==3.6.9', conda = '../miniconda/bin/conda')
-          tensorflow::install_tensorflow(version='1.14.0', conda = '../miniconda/bin/conda')
-        shell: Rscript {0}
+          Rscript -e "remotes::install_github('rstudio/reticulate')"
+          Rscript -e "reticulate::install_miniconda()"
+
+      - name: Find Miniconda on macOS
+        if: runner.os == 'macOS'
+        run: echo "options(reticulate.conda_binary = reticulate:::miniconda_conda())" >> .Rprofile
 
-      - name: Install TensorFlow on Windows and Ubuntu
-        if: runner.os != 'macOS'
+      - name: Install TensorFlow
         run: |
-          reticulate::install_miniconda()
-          reticulate::conda_create('r-reticulate', packages = 'python==3.6.9')
+          reticulate::conda_create('r-reticulate', packages = c('python==3.6.9'))
           tensorflow::install_tensorflow(version='1.14.0')
         shell: Rscript {0}