From 2494b8eb98e239442ee04c23f73260ce1937b23b Mon Sep 17 00:00:00 2001
From: Jim Hester <james.f.hester@gmail.com>
Date: Thu, 17 Oct 2019 09:09:35 -0400
Subject: [PATCH 1/2] Support building R-devel

Martin Maechler, a member of R core provides a daily tarball of R-devel
sources at https://stat.ethz.ch/R/daily. This provides support for
building based on this source if R_VERSION is set to 'devel'
---
 builder/build.sh | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/builder/build.sh b/builder/build.sh
index 01461ef..8dd0012 100755
--- a/builder/build.sh
+++ b/builder/build.sh
@@ -40,7 +40,12 @@ archive_r() {
 
 fetch_r_source() {
   echo "Downloading R-${1}"
-  wget -q "${CRAN}/src/base/R-`echo ${1}| awk 'BEGIN {FS="."} {print $1}'`/R-${1}.tar.gz" -O /tmp/R-${1}.tar.gz
+  if [ "${1}" = devel ]; then
+    # Download the daily tarball of R devel
+    wget -q https://stat.ethz.ch/R/daily/R-devel.tar.gz -O /tmp/R-devel.tar.gz
+  else
+    wget -q "${CRAN}/src/base/R-`echo ${1}| awk 'BEGIN {FS="."} {print $1}'`/R-${1}.tar.gz" -O /tmp/R-${1}.tar.gz
+  fi
   echo "Extracting R-${1}"
   tar xf /tmp/R-${1}.tar.gz -C /tmp
   rm /tmp/R-${1}.tar.gz

From c9ec370dbbf9a2744e6800d2652fa515bb1f1ed1 Mon Sep 17 00:00:00 2001
From: Jim Hester <james.f.hester@gmail.com>
Date: Fri, 1 Nov 2019 14:35:45 -0400
Subject: [PATCH 2/2] Add devel version to the CRAN R versions

---
 handler.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/handler.py b/handler.py
index eaaa00e..ee676d0 100644
--- a/handler.py
+++ b/handler.py
@@ -43,6 +43,7 @@ def _cran_all_r_versions():
     r_versions = []
     r_versions.extend(_cran_r_versions(CRAN_SRC_R3_URL))
     r_versions.extend(_cran_r_versions(CRAN_SRC_R4_URL))
+    r_versions.append('devel')
     return {'r_versions': r_versions}