Try fixing coverage again...

.github/workflows/test-coverage.yaml

@@ -12,15 +12,15 @@ name: test-coverage
 
 jobs:
   test-coverage:
-    runs-on: ubuntu-18.04
+    runs-on: macOS-latest
     env:
       GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
     steps:
       - uses: actions/checkout@v2
 
-      - uses: r-lib/actions/setup-r@master
+      - uses: r-lib/actions/setup-r@v1
 
-      - uses: r-lib/actions/setup-pandoc@master
+      - uses: r-lib/actions/setup-pandoc@v1
 
       - name: Query dependencies
         run: |
@@ -29,8 +29,8 @@ jobs:
           writeLines(sprintf("R-%i.%i", getRversion()$major, getRversion()$minor), ".github/R-version")
         shell: Rscript {0}
 
-      - name: Cache R packages
-        uses: actions/cache@v1
+      - name: Restore R package cache
+        uses: actions/cache@v2
         with:
           path: ${{ env.R_LIBS_USER }}
           key: ${{ runner.os }}-${{ hashFiles('.github/R-version') }}-1-${{ hashFiles('.github/depends.Rds') }}

DESCRIPTION

@@ -47,8 +47,7 @@ Suggests:
   testthat,
   plotly,
   webshot,
-  mvtnorm,
-  covr
+  mvtnorm
 License: LGPL-3
 URL: https://github.com/UUPharmacometrics/xpose
 BugReports: https://github.com/UUPharmacometrics/xpose/issues