Enable container-based r-ci 'dev' version

Author: eddelbuettel

.github/workflows/ci.yaml

@@ -14,17 +14,22 @@ jobs:
     strategy:
       matrix:
         include:
-          - {os: macOS-latest}
-          - {os: ubuntu-latest}
+          - { name: container, os: ubuntu-latest, container: rocker/r2u4ci }
+          - { name: macos,     os: macos-latest }
+          #- { name: ubuntu,    os: ubuntu-latest }
+
 
     runs-on: ${{ matrix.os }}
+    container: ${{ matrix.container }}
 
     steps:
       - name: Checkout
         uses: actions/checkout@v4
 
       - name: Setup
         uses: eddelbuettel/github-actions/r-ci@master
+        with:
+          dev_version: 'TRUE'
 
       - name: Configure
         run: ./configure; cat src/Makevars

src/Makevars.in

@@ -1,5 +1,4 @@
 ## -*- mode: makefile; -*-
-
 PKG_CPPFLAGS = -I../inst/include -DARMA_USE_CURRENT
 PKG_CXXFLAGS = @OPENMP_FLAG@
 PKG_LIBS= @OPENMP_FLAG@ $(LAPACK_LIBS) $(BLAS_LIBS) $(FLIBS)

src/Makevars.win

@@ -1,4 +1,3 @@
 ## -*- mode: makefile; -*-
-
 PKG_CXXFLAGS = -I../inst/include -I. $(SHLIB_OPENMP_CXXFLAGS) -DARMA_USE_CURRENT
 PKG_LIBS = $(SHLIB_OPENMP_CXXFLAGS) $(LAPACK_LIBS) $(BLAS_LIBS) $(FLIBS)