diff --git a/system/python-3.7.2-0.build.sh b/system/python-3.7.2-0.build.sh
new file mode 100755
index 0000000..584d23a
--- /dev/null
+++ b/system/python-3.7.2-0.build.sh
@@ -0,0 +1,54 @@
+#! /bin/bash
+
+# to build system pyhton:
+#   umask 022
+#   sudo mkdir -p /usr/local/system/python-3.7.2-0
+#   sudo chown build:build /usr/local/system/python-3.7.2-0
+#   sudo -u build ./python-3.7.2-0.build.sh 2>&1 | tee python-3.7.2-0.build.log
+#   sudo chown -R bin:bin /usr/local/system/python-3.7.2-0
+
+PKG=python
+VERSION=3.7.2
+BUILD=0
+URL=https://www.python.org/ftp/python/$VERSION/Python-$VERSION.tgz
+
+PREFIX=/usr/local/system/$PKG-$VERSION-$BUILD
+
+set -xe
+umask 022
+
+BUILD_TMPDIR=/dev/shm/$PKG-$VERSION-$BUILD.build.tmp
+test -d $BUILD_TMPDIR && rm -rf $BUILD_TMPDIR
+mkdir -p $BUILD_TMPDIR/home
+export TMPDIR=$BUILD_TMPDIR
+export HOME=$BUILD_TMPDIR/home
+
+exec </dev/null
+
+mkdir -p $PREFIX
+cat >$PREFIX/profile <<-EOF
+	PATH=$PREFIX/bin:\$PATH
+EOF
+. $PREFIX/profile
+
+export MAKEFLAGS="-j $(nproc)"
+
+BUILDDIR=$PREFIX/build
+
+mkdir -p $BUILDDIR
+cd $BUILDDIR
+
+test -e Python-$VERSION.tgz || wget $URL
+test -d Python-$VERSION || tar xf Python-$VERSION.tgz
+cd Python-$VERSION
+
+./configure --prefix=$PREFIX --enable-shared LDFLAGS=-Wl,-rpath,$PREFIX/lib
+make
+make install
+
+python -m ensurepip
+pip3 install --upgrade pip
+
+pip3 install blink1
+
+exit