slapos-node package: fixes for python3

Also adapt build.sh for bootstrapping with python3.

This is a fixup of 4b28ab13. See also !1154

component/firewalld/buildout.cfg

@@ -61,6 +61,7 @@ environment =
   DBUS_GLIB_LIBS=-L${dbus-glib:location}/lib -ldbus-glib-1
   CPPFLAGS=-I${glib:location}/include/glib-2.0 -I${glib:location}/lib/glib-2.0/include
   LDFLAGS=-L${glib:location}/lib -Wl,-rpath=${glib:location}/lib -L${gettext:location}/lib -Wl,-rpath=${gettext:location}/lib
+  PYTHON=${buildout:executable}
 
 [gobject-introspection]
 recipe = slapos.recipe.cmmi
@@ -79,6 +80,7 @@ environment =
   FFI_CFLAGS=-I${libffi:location}/include
   FFI_LIBS=-L${libffi:location}/lib -Wl,-rpath=${libffi:location}/lib -lffi
   GIR_DIR=${buildout:parts-directory}/${:_buildout_section_name_}/share/gir-1.0
+  PYTHON=${buildout:executable}
 
 [pygobject3]
 recipe = slapos.recipe.cmmi
@@ -101,6 +103,7 @@ environment =
   GIO_LIBS=-L${glib:location}/lib -lgio-2.0
   GI_CFLAGS=-I${gobject-introspection:location}/include/gobject-introspection-1.0
   GI_LIBS=-L${gobject-introspection:location}/lib -lgirepository-1.0
+  PYTHON=${buildout:executable}
 
 [trusted-config]
 recipe = slapos.recipe.build:download
@@ -114,13 +117,13 @@ python = ${buildout:bin-directory}/${firewalld-eggs:interpreter}
 stop-on-error = True
 command =
   set -e
-  sed -i 's#python2.7#${:python}#' ${firewalld:location}/bin/firewall-applet
-  sed -i 's#python2.7#${:python}#' ${firewalld:location}/bin/firewall-cmd
-  sed -i 's#python2.7#${:python}#' ${firewalld:location}/bin/firewall-config
-  sed -i 's#python2.7#${:python}#' ${firewalld:location}/bin/firewall-offline-cmd
-  sed -i 's#python2.7#${:python}#' ${firewalld:location}/${firewalld:sbin-dir}/firewalld
+  sed -i 's#python3#${:python}#' ${firewalld:location}/bin/firewall-applet
+  sed -i 's#python3#${:python}#' ${firewalld:location}/bin/firewall-cmd
+  sed -i 's#python3#${:python}#' ${firewalld:location}/bin/firewall-config
+  sed -i 's#python3#${:python}#' ${firewalld:location}/bin/firewall-offline-cmd
+  sed -i 's#python3#${:python}#' ${firewalld:location}/${firewalld:sbin-dir}/firewalld
 
-  sed -i 's#python2.7 /usr/bin/firewall-config#${:python} ${firewalld:location}/bin/firewall-config#' ${firewalld:etc-dir}/lockdown-whitelist.xml
+  sed -i 's#python3 /usr/bin/firewall-config#${:python} ${firewalld:location}/bin/firewall-config#' ${firewalld:etc-dir}/lockdown-whitelist.xml
 
   sed -i 's#DefaultZone=public#DefaultZone=trusted#' ${firewalld:etc-dir}/firewalld.conf
   sed -i 's#FirewallBackend=nftables#FirewallBackend=iptables#' ${firewalld:etc-dir}/firewalld.conf

component/nftables/buildout.cfg

@@ -49,4 +49,5 @@ configure-options =
   --enable-python
   --with-json
   --without-cli
+  --with-python-bin=${buildout:executable}
 

component/slapos/build.sh

@@ -3,22 +3,18 @@
 # This simple script to buildout slapos from source using 1.0 branch on
 # /opt/slapos folder, adapt this script as you please.
 #
-# Be carefull to not run this script were the script is already installed.
+# Be carefull to not run this script where slapos-node is already installed.
 #
 # Before run this script, ensure dependencies are installed, on debian, you can
 # use the command bellow:
 #
-# apt-get install python gcc g++ make uml-utilities bridge-utils patch wget
+# apt-get install python3 gcc g++ make patch wget curl
 #
 
 # Use sudo or superuser and create slapos directory (you can pick a different directory)
-mkdir -p /opt/slapos/log/
+mkdir -p /opt/slapos
 cd /opt/slapos/
-
-# Create buildout.cfg SlapOS bootstrap file
-echo "[buildout]
-extends = https://lab.nexedi.com/nexedi/slapos/raw/1.0/component/slapos/buildout.cfg
-" > buildout.cfg
+mkdir -p eggs log download-cache/dist
 
 # Required in some distros such as Mandriva
 unset PYTHONPATH
@@ -26,17 +22,51 @@ unset PYTHONDONTWRITEBYTECODE
 unset CONFIG_SITE
 
 #
-# Bootstrap SlapOS, using forked version of buildout.
+# Bootstrap buildout.
 #
-wget https://bootstrap.pypa.io/bootstrap-buildout.py
-python -S bootstrap-buildout.py --buildout-version 2.5.2+slapos013 \
-  -f http://www.nexedi.org/static/packages/source/slapos.buildout/
+cat > buildout.cfg <<EOF
+[buildout]
+extends = https://lab.nexedi.com/nexedi/slapos/raw/1.0/component/slapos/buildout.cfg
+download-cache = download-cache
+parts =
+  zc.buildout
+
+[zc.buildout]
+recipe = zc.recipe.egg
+eggs =
+  zc.buildout
+EOF
+
+rm -f bootstrap.py
+wget https://lab.nexedi.com/nexedi/slapos.buildout/raw/master/bootstrap/bootstrap.py
+python3 -S bootstrap.py \
+  --setuptools-version 40.8.0 \
+  --setuptools-to-dir eggs
+sed -i '1s/$/ -S/' bin/buildout
+bin/buildout buildout:newest=true -v
+
+# Install slapos.libnetworkcache (outside of system libraries, see python -S)
+cat > buildout.cfg <<EOF
+[buildout]
+extends = https://lab.nexedi.com/nexedi/slapos/raw/1.0/component/slapos/buildout.cfg
+download-cache = download-cache
+parts =
+  networkcached
+
+[networkcached]
+recipe = zc.recipe.egg
+eggs =
+  slapos.libnetworkcache
+  zc.buildout
+EOF
+sed -i '1s/$/ -S/' bin/buildout
+bin/buildout buildout:newest=true -v
 
 #
-# Warning:Depending on your distribution you might need to
-# replace python by python2 in the last command. This happens when your
-# distribution considers that the standard python is the 3.x branch.
+# Finally start the big build
 #
-# Finally start to build
-
-bin/buildout -v
+echo "[buildout]
+extends = https://lab.nexedi.com/nexedi/slapos/raw/1.0/component/slapos/buildout.cfg
+download-cache = download-cache
+" > buildout.cfg
+bin/buildout buildout:newest=true -v

component/slapos/buildout.cfg

@@ -19,14 +19,17 @@ parts =
   py
   firewalld-patch
 
+[python]
+part = python3
+
 [environment]
 # Note: For now original PATH is appended to the end, as not all tools are
 #       provided by SlapOS
-PATH=${bison:location}/bin:${bzip2:location}/bin:${gettext:location}/bin:${glib:location}/bin:${libxml2:location}/bin:${libxslt:location}/bin:${m4:location}/bin:${ncurses:location}/bin:${openssl:location}/bin:${pkgconfig:location}/bin:${python2.7:location}/bin:${readline:location}/bin:${sqlite3:location}/bin:${swig:location}/bin:${buildout:bin-directory}:${patch:location}/bin:${socat:location}/bin:$PATH
+PATH=${bison:location}/bin:${bzip2:location}/bin:${gettext:location}/bin:${glib:location}/bin:${libxml2:location}/bin:${libxslt:location}/bin:${m4:location}/bin:${ncurses:location}/bin:${openssl:location}/bin:${pkgconfig:location}/bin:${python:location}/bin:${readline:location}/bin:${sqlite3:location}/bin:${swig:location}/bin:${buildout:bin-directory}:${patch:location}/bin:${socat:location}/bin:$PATH
 CFLAGS=-I${bzip2:location}/include -I${gdbm:location}/include -I${gettext:location}/include -I${glib:location}/include -I${libxml2:location}/include -I${libxslt:location}/include -I${ncurses:location}/include -I${openssl:location}/include -I${readline:location}/include -I${sqlite3:location}/include -I${zlib:location}/include
 CPPFLAGS=${:CFLAGS}
 LDFLAGS=-L${bzip2:location}/lib -Wl,-rpath=${bzip2:location}/lib -L${gdbm:location}/lib -Wl,-rpath=${gdbm:location}/lib -L${gettext:location}/lib -Wl,-rpath=${gettext:location}/lib -L${glib:location}/lib -Wl,-rpath=${glib:location}/lib -L${libxml2:location}/lib -Wl,-rpath=${libxml2:location}/lib -L${libxslt:location}/lib -Wl,-rpath=${libxslt:location}/lib -L${ncurses:location}/lib -Wl,-rpath=${ncurses:location}/lib -L${openssl:location}/lib -Wl,-rpath=${openssl:location}/lib -L${readline:location}/lib -Wl,-rpath=${readline:location}/lib -L${sqlite3:location}/lib -Wl,-rpath=${sqlite3:location}/lib -L${zlib:location}/lib -Wl,-rpath=${zlib:location}/lib
-PKG_CONFIG_PATH=${glib:location}/lib/pkgconfig:${libxml2:location}/lib/pkgconfig:${libxslt:location}/lib/pkgconfig:${openssl:location}/lib/pkgconfig:${pcre:location}/lib/pkgconfig:${python2.7:location}/lib/pkgconfig:${sqlite3:location}/lib/pkgconfig
+PKG_CONFIG_PATH=${glib:location}/lib/pkgconfig:${libxml2:location}/lib/pkgconfig:${libxslt:location}/lib/pkgconfig:${openssl:location}/lib/pkgconfig:${pcre:location}/lib/pkgconfig:${python:location}/lib/pkgconfig:${sqlite3:location}/lib/pkgconfig
 LD_LIBRARY_PATH=${bzip2:location}/lib:${gdbm:location}/lib:${gettext:location}/lib:${glib:location}/lib:${libxml2:location}/lib:${libxslt:location}/lib:${ncurses:location}/lib:${openssl:location}/lib:${readline:location}/lib:${sqlite3:location}/lib:${zlib:location}/lib
 
 [cfg-environment]

component/slapos/obs.cfg

@@ -26,7 +26,6 @@ extends-cache = extends-cache
 download-cache = download-cache
 
 [python]
-part = python3
 init +=
   buildout = self.buildout['buildout']
   assert buildout['directory'] == buildout['destdir'] + buildout['rootdir'], (