Install old version of XML package from source.

refs #16586

Arvados-DCO-1.1-Signed-off-by: Tom Clegg <tom@tomclegg.ca>

diff --git a/sdk/R/install_deps.R b/sdk/R/install_deps.R
index 593129bb3ceeb18bbc6cb2520529fd5067b823b1..6c33f97913f83aaeaebf392fec740ba9f9d0d98a 100644 (file)
--- a/sdk/R/install_deps.R
+++ b/sdk/R/install_deps.R
@@ -15,5 +15,11 @@ if (!requireNamespace("knitr")) {
 if (!requireNamespace("markdown")) {
   install.packages("markdown")
 }
+if (!requireNamespace("XML")) {
+  # XML 3.99-0.4 depends on R >= 4.0.0, but we run tests on debian
+  # stable (10) with R 3.5.2 so we install an older version from
+  # source.
+  install.packages("https://cran.r-project.org/src/contrib/Archive/XML/XML_3.99-0.3.tar.gz", repos=NULL, type="source")
+}
 
 devtools::install_dev_deps()