Index: PKGBUILD
===================================================================
--- PKGBUILD	(revision 318775)
+++ PKGBUILD	(working copy)
@@ -36,6 +36,29 @@
 }
 
 build() {
+  cp -a postgresql-${pkgver} postgresql-${pkgver}-python3
+  cd postgresql-${pkgver}-python3
+  ./configure \
+    --prefix=/usr \
+    --mandir=/usr/share/man \
+    --datadir=/usr/share/postgresql \
+    --sysconfdir=/etc \
+    --with-gssapi \
+    --with-libxml \
+    --with-openssl \
+    --with-perl \
+    --with-python PYTHON=/usr/bin/python3 \
+    --with-tcl \
+    --with-pam \
+    --with-system-tzdata=/usr/share/zoneinfo \
+    --with-uuid=e2fs \
+    --enable-nls \
+    --enable-thread-safety
+  make world
+  cd ..
+
+  #mv postgresql-${pkgver} postgresql-${pkgver}-python3
+  #mv postgresql-${pkgver}-python2 postgresql-${pkgver}
   cd postgresql-${pkgver}
   ./configure \
     --prefix=/usr \
@@ -116,7 +139,8 @@
   pkgdesc='Sophisticated object-relational DBMS'
   backup=('etc/pam.d/postgresql' 'etc/logrotate.d/postgresql')
   depends=("postgresql-libs>=${pkgver}" 'krb5' 'libxml2' 'readline>=6.0' 'openssl>=1.0.0' 'pam')
-  optdepends=('python2: for PL/Python support'
+  optdepends=('python2: for PL/Python 2 support'
+              'python3: for PL/Python 3 support'
               'perl: for PL/Perl support'
               'tcl: for PL/Tcl support'
               'postgresql-old-upgrade: upgrade from previous major version using pg_upgrade')
@@ -123,6 +147,14 @@
   options=('staticlibs')
   install=postgresql.install
 
+  cd postgresql-${pkgver}-python3
+
+  # install
+  make DESTDIR="${pkgdir}" install
+  make -C contrib DESTDIR="${pkgdir}" install
+  make -C doc/src/sgml DESTDIR="${pkgdir}" install-man
+  cd ..
+
   cd postgresql-${pkgver}
 
   # install