Index: /issm/trunk-jpl/externalpackages/codipack/install.sh
===================================================================
--- /issm/trunk-jpl/externalpackages/codipack/install.sh	(revision 27739)
+++ /issm/trunk-jpl/externalpackages/codipack/install.sh	(revision 27740)
@@ -8,5 +8,5 @@
 
 #Download development version
-svn co https://github.com/SciCompKL/CoDiPack.git/trunk install
+git clone https://github.com/SciCompKL/CoDiPack.git install
 
 ## Download source
Index: /issm/trunk-jpl/externalpackages/medipack/install.sh
===================================================================
--- /issm/trunk-jpl/externalpackages/medipack/install.sh	(revision 27739)
+++ /issm/trunk-jpl/externalpackages/medipack/install.sh	(revision 27740)
@@ -6,3 +6,3 @@
 
 #Download development version
-svn co https://github.com/SciCompKL/MeDiPack/trunk install
+git clone https://github.com/SciCompKL/MeDiPack.git install
Index: /issm/trunk-jpl/externalpackages/petsc/install-3.19-discovery.sh
===================================================================
--- /issm/trunk-jpl/externalpackages/petsc/install-3.19-discovery.sh	(revision 27740)
+++ /issm/trunk-jpl/externalpackages/petsc/install-3.19-discovery.sh	(revision 27740)
@@ -0,0 +1,50 @@
+#!/bin/bash
+set -eu
+
+## Constants
+#
+VER="3.19.1"
+
+PETSC_DIR="${ISSM_DIR}/externalpackages/petsc/src" # DO NOT CHANGE THIS
+PREFIX="${ISSM_DIR}/externalpackages/petsc/install" # Set to location where external package should be installed
+
+# Download source
+$ISSM_DIR/scripts/DownloadExternalPackage.sh "https://ftp.mcs.anl.gov/pub/petsc/release-snapshots/petsc-${VER}.tar.gz" "petsc-${VER}.tar.gz"
+
+# Unpack source
+tar -zxvf petsc-${VER}.tar.gz
+
+# Cleanup
+rm -rf ${PREFIX} ${PETSC_DIR}
+mkdir -p ${PETSC_DIR}
+
+# Move source to $PETSC_DIR
+mv petsc-${VER}/* ${PETSC_DIR}
+rm -rf petsc-${VER}
+
+# Configure
+cd ${PETSC_DIR}
+./config/configure.py \
+	COPTFLAGS="-g -O3" CXXOPTFLAGS="-g -O3" FOPTFLAGS="-g -O3" \
+	--prefix="${PREFIX}" \
+	--PETSC_DIR="${PETSC_DIR}" \
+	--with-make-np=20 \
+	--with-blas-lapack-dir=$MKL_ROOT \
+	--with-mpi-dir="/optnfs/el7/mpich/3.3-intel19.3/" \
+	--known-mpi-shared-libraries=1 \
+	--known-mpi-long-double=1 \
+	--known-mpi-int64_t=1 \
+	--known-mpi-c-double-complex=1 \
+	--with-debugging=0 \
+	--with-valgrind=0 \
+	--with-x=0 \
+	--with-ssl=0 \
+	--with-pic=1 \
+	--download-metis=1 \
+	--download-parmetis=1 \
+	--download-scalapack=1 \
+	--download-mumps=1
+
+# Compile and install
+make
+make install