Do not harcode version of wanted Python

component/boost-lib/buildout.cfg

@@ -13,7 +13,7 @@ shared = true
 url = http://downloads.sourceforge.net/sourceforge/boost/boost_1_67_0.tar.bz2
 md5sum = ced776cb19428ab8488774e1415535ab
 location = @@LOCATION@@
-configure-command = ./bootstrap.sh --prefix=${:location} --with-python=${python2.7:location}/bin/python2.7 --without-icu
+configure-command = ./bootstrap.sh --prefix=${:location} --without-icu
 make-binary =
 make-options =
 make-targets = for a in $MAKEFLAGS; do case $a in -j*) j=$a; break;; esac; done;

component/defaults.cfg

+[buildout]
+extends =
+  python-2.7/buildout.cfg
+  python3/buildout.cfg
+python = python
+
+[python]
+recipe = slapos.recipe.build
+part = python2.7
+init =
+  python = self.buildout[options['part']]
+  for x in 'location', 'executable', 'version':
+    options[x] = python[x]
+update =
+  import os
+  path, os.environ['PYTHON'] = os.path.split(options['executable'])
+  PATH = os.environ['PATH']
+  if path not in PATH.split(os.pathsep):
+    os.environ['PATH'] = path + os.pathsep + PATH

component/firewalld/buildout.cfg

@@ -35,7 +35,6 @@ environment =
   PATH=${autoconf:location}/bin:${automake:location}/bin:${pkgconfig:location}/bin:${libtool:location}/bin:${intltool:location}/bin:${gettext:location}/bin:${glib:location}/bin:${perl:location}/bin:%(PATH)s
   CPPFLAGS=-I${gettext:location}/include
   LDFLAGS=-L${gettext:location}/lib -Wl,-rpath=${gettext:location}/lib
-  PYTHON=${python2.7:location}/bin/python2.7
   M4=${m4:location}/bin/m4
   ACLOCAL_PATH=${pkgconfig:location}/share/aclocal:${gettext:location}/share/aclocal:${libtool:location}/share/aclocal:${glib:location}/share/aclocal:${intltool:location}/share/aclocal
   FIREWALLD_DEVEL_ENV=${buildout:parts-directory}/${:_buildout_section_name_}/src
@@ -49,14 +48,13 @@ md5sum = 7372a588c83a7232b4e08159bfd48fe5
 python-egg = ${buildout:parts-directory}/${:_buildout_section_name_}/lib/python2.7/site-packages
 environment =
   PKG_CONFIG_PATH=${dbus:location}/lib/pkgconfig:${dbus-glib:location}/lib/pkgconfig:${glib:location}/lib/pkgconfig:${pcre:location}/lib/pkgconfig
-  PATH=${pkgconfig:location}/bin:${python2.7:location}/bin:%(PATH)s
+  PATH=${pkgconfig:location}/bin:%(PATH)s
   DBUS_CFLAGS=-I${dbus:location}/include/dbus-1.0 -I${dbus:location}/lib/dbus-1.0/include
   DBUS_LIBS=-L${dbus:location}/lib -ldbus-1
   DBUS_GLIB_CFLAGS=-I${dbus-glib:location}/include/dbus-1.0
   DBUS_GLIB_LIBS=-L${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
-  PYTHON=${python2.7:location}/bin/python2.7
   PYTHON_INCLUDES=-I${python2.7:location}/include/python2.7
   PYTHON_LIBS=-L${python2.7:location}/lib -lpython2.7 -lpthread -ldl -lutil -lm
 
@@ -72,7 +70,6 @@ environment =
   PKG_CONFIG_PATH=${glib:location}/lib/pkgconfig:${pcre:location}/lib/pkgconfig
   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${libffi:location}/lib -Wl,-rpath=${libffi:location}/lib -lffi
-  PYTHON=${python2.7:location}/bin/python2.7
   GLIB_CFLAGS=-I${glib:location}/include/glib-2.0 -I${glib:location}/lib/glib-2.0/include
   GLIB_LIBS=-L${glib:location}/lib -lglib-2.0 -lintl -lgobject-2.0
   FFI_CFLAGS=-I${libffi:location}/include
@@ -89,12 +86,10 @@ pre-configure =
 configure-options =
   --disable-static
   --disable-cairo
-  --with-python=${python2.7:location}/bin/python2.7
 
 environment =
   PATH=${pkgconfig:location}/bin:${libtool:location}/bin:${glib:location}/bin:${xz-utils:location}/bin:%(PATH)s
   PKG_CONFIG_PATH=${glib:location}/lib/pkgconfig:${gobject-introspection:location}/lib/pkgconfig:${pcre:location}/lib/pkgconfig
-  PYTHON=${python2.7:location}/bin/python2.7
   FFI_CFLAGS=-I${libffi:location}/include
   FFI_LIBS=-L${libffi:location}/lib -Wl,-rpath=${libffi:location}/lib -lffi
   CPPFLAGS=-I${glib:location}/include/glib-2.0 -I${glib:location}/lib/glib-2.0/include -I${gettext:location}/include -I${libffi:location}/include
@@ -115,7 +110,7 @@ md5sum = 893752ba2e93a1e96334dfee19f884ad
 
 [firewalld-patch]
 recipe = plone.recipe.command
-python = ${buildout:directory}/bin/${firewalld-eggs:interpreter}
+python = ${buildout:bin-directory}/${firewalld-eggs:interpreter}
 command =
   sed -i 's#/usr/bin/python -Es#${:python}#' ${firewalld:location}/bin/firewall-cmd
   sed -i 's#/usr/bin/python -Es#${:python}#' ${firewalld:location}/sbin/firewalld

component/glib/buildout.cfg

@@ -6,18 +6,9 @@ extends =
   ../perl/buildout.cfg
   ../xz-utils/buildout.cfg
   ../zlib/buildout.cfg
-  ../python-2.7/buildout.cfg
 parts =
   glib
 
-# --with-python=${buildout:executable} is simpler but we may end up with
-# scripts whose shebang exceeds the kernel limit.
-# And ${buildout:executable}/.. is not a valid $PATH part.
-[glib-python]
-recipe = collective.recipe.shelloutput
-commands =
-  bin-directory = dirname ${buildout:executable}
-
 [glib]
 recipe = slapos.recipe.cmmi
 patches =
@@ -27,7 +18,6 @@ shared = true
 url = https://ftp.gnome.org/pub/gnome/sources/glib/2.56/glib-2.56.4.tar.xz
 md5sum = 17c3dca43d99a4882384f1a7b530b80b
 configure-options =
-  --with-python=python
   --disable-libmount
   --disable-static
   --disable-selinux
@@ -35,7 +25,7 @@ configure-options =
   --disable-xattr
   --disable-man
 environment =
-  PATH=${glib-python:bin-directory}:${gettext:location}/bin:${perl:location}/bin:${xz-utils:location}/bin:%(PATH)s
+  PATH=${gettext:location}/bin:${perl:location}/bin:${xz-utils:location}/bin:%(PATH)s
   CPPFLAGS=-I${gettext:location}/include -I${zlib:location}/include
   LDFLAGS=-L${gettext:location}/lib -Wl,-rpath=${gettext:location}/lib -L${zlib:location}/lib -Wl,-rpath=${zlib:location}/lib
   LIBFFI_CFLAGS=-I${libffi:location}/include

component/gtk-2/buildout.cfg

@@ -107,7 +107,6 @@ shared = true
 url = https://download.gnome.org/sources/atk/2.28/atk-2.28.1.tar.xz
 md5sum = dfb5e7474220afa3f4ca7e45af9f3a11
 configure-options =
-  --with-python=${python2.7:location}/bin/python2.7
   --disable-gtk-doc-html
 environment =
   PATH=${gettext:location}/bin:${glib:location}/bin:${pkgconfig:location}/bin:${xz-utils:location}/bin:%(PATH)s

component/jupyter/buildout.cfg

@@ -4,7 +4,6 @@ extends =
   ../matplotlib/buildout.cfg
   ../ipython/buildout.cfg
   ../python-pyzmq/buildout.cfg
-  ../python-2.7/buildout.cfg
   ../scipy/buildout.cfg
   ../scikit-learn/buildout.cfg
   ../pandas/buildout.cfg

component/nghttp2/buildout.cfg

 [buildout]
-extends = 
+extends =
   ../automake/buildout.cfg
   ../libtool/buildout.cfg
   ../pkgconfig/buildout.cfg
-  ../python-2.7/buildout.cfg
 
 parts =
   nghttp2
@@ -18,4 +17,4 @@ pre-configure =
   automake
   autoconf
 environment =
-  PATH=${autoconf:location}/bin:${automake:location}/bin:${libtool:location}/bin:${m4:location}/bin:${python2.7:location}/bin:%(PATH)s
+  PATH=${autoconf:location}/bin:${automake:location}/bin:${libtool:location}/bin:${m4:location}/bin:%(PATH)s

component/nodejs/buildout.cfg

@@ -57,7 +57,7 @@ configure-options =
   --shared-openssl-libpath=${:openssl_location}/lib
 environment =
   HOME=@@LOCATION@@
-  PATH=${gcc:location}/bin:${pkgconfig:location}/bin:${python2.7:location}/bin/:%(PATH)s
+  PATH=${gcc:location}/bin:${pkgconfig:location}/bin:%(PATH)s
   PKG_CONFIG_PATH=${:openssl_location}/lib/pkgconfig/
   CPPFLAGS=-I${zlib:location}/include
   LDFLAGS=-Wl,-rpath=${gcc:location}/lib -Wl,-rpath=${gcc:location}/lib64 -Wl,-rpath=${:openssl_location}/lib -L${zlib:location}/lib -Wl,-rpath=${zlib:location}/lib

component/python3/buildout.cfg

@@ -54,6 +54,7 @@ environment =
 
 [python3.6]
 <= python3-common
+version = 3.6
 package_version = 3.6.10
 md5sum = 986078f11b39074be22a199e56491d98
 
@@ -62,6 +63,7 @@ md5sum = 986078f11b39074be22a199e56491d98
 # I think gcc 5 may meet the requirement, use gcc 8 all in one step
 [python3.7]
 <= python3-common
+version = 3.7
 package_version = 3.7.2
 md5sum = df6ec36011808205beda239c72f947cb
 patch-options =

component/pytorch/buildout.cfg

@@ -50,7 +50,7 @@ location = ${buildout:parts-directory}/${:_buildout_section_name_}
 recipe = slapos.recipe.build
 egg = ${:_buildout_section_name_}
 workdir = ${pytorch-repository:location}
-egg-name = ${:egg}-${versions:torch}-py2.7-linux-x86_64.egg
+egg-name = ${:egg}-${versions:torch}-py${python:version}-linux-x86_64.egg
 location = ${buildout:eggs-directory}/${:egg-name}
 python-bin = ${buildout:bin-directory}/${pytorch-build-interpreter:interpreter}
 no-cuda = 0

component/re6stnet/buildout.cfg

 [buildout]
 extends =
+  ../defaults.cfg
   ../babeld/buildout.cfg
   ../geoip2/buildout.cfg
   ../openvpn/buildout.cfg
@@ -22,4 +23,4 @@ eggs =
 initialization =
   import os
   os.environ['GEOIP2_MMDB'] = "${geolite2-country:location}/GeoLite2-Country.mmdb"
-  os.environ['PATH'] = "${openvpn:location}/sbin:${babeld:location}/bin:${openssl:location}/bin:${python2.7:location}/bin:" + os.environ.get('PATH', '/usr/sbin:/usr/bin:/sbin:/bin')
+  os.environ['PATH'] = "${openvpn:location}/sbin:${babeld:location}/bin:${openssl:location}/bin:${python:location}/bin:" + os.environ.get('PATH', '/usr/sbin:/usr/bin:/sbin:/bin')

component/tensorboard/buildout.cfg

@@ -24,13 +24,13 @@ command =
 recipe = slapos.recipe.build
 egg = ${:_buildout_section_name_}
 workdir = ${tensorboard-repository:location}
-egg-name = ${:egg}-${versions:tensorflow-tensorboard}-py2.7.egg
+egg-name = ${:egg}-${versions:tensorflow-tensorboard}-py${python:version}.egg
 location = ${buildout:eggs-directory}/${:egg-name}
 gcc-bin = ${gcc:location}/bin
 gcc-lib = ${gcc:location}/lib
 gcc-lib64 = ${gcc:location}/lib64
 numpy-python-command = ${buildout:bin-directory}/${numpy-egg:interpreter}
-python27-lib = ${python2.7:location}/lib
+python-lib = ${python:location}/lib
 java_home_bin = ${bazel:java_home}/bin
 bazel-bin = ${bazel:location}/bin
 install =
@@ -47,7 +47,7 @@ install =
                                   options['gcc-lib64'],
                                   os.environ.get('LIBRARY_PATH') or '']),
          'PYTHON_BIN_PATH':options['numpy-python-command'],
-         'PYTHON_LIB_PATH':options['python27-lib'],
+         'PYTHON_LIB_PATH':options['python-lib'],
          }
   env['LD_LIBRARY_PATH'] = env['LIBRARY_PATH']
   bazel_command = ['bazel', 'build', '--spawn_strategy=standalone', '--verbose_failures', '--sandbox_debug', '//tensorboard/pip_package:build_pip_package']

component/tensorflow/buildout.cfg

@@ -45,13 +45,13 @@ cudnn_install_path = /usr/local/cuda
 recipe = slapos.recipe.build
 egg = ${:_buildout_section_name_}
 workdir = ${tensorflow-repository:location}
-egg-name = ${:egg}-${versions:tensorflow}-py2.7-linux-x86_64.egg
+egg-name = ${:egg}-${versions:tensorflow}-py${python:version}-linux-x86_64.egg
 location = ${buildout:eggs-directory}/${:egg-name}
 gcc-bin = ${gcc:location}/bin
 gcc-lib = ${gcc:location}/lib
 gcc-lib64 = ${gcc:location}/lib64
 numpy-python-command = ${buildout:bin-directory}/${numpy-egg:interpreter}
-python27-lib = ${python2.7:location}/lib
+python-lib = ${python:location}/lib
 java_home_bin = ${bazel:java_home}/bin
 bazel_bin = ${bazel:location}/bin
 need_cuda = ${cuda:cuda_toolkit_path}
@@ -72,7 +72,7 @@ install =
                                   options['gcc-lib64'],
                                   os.environ.get('LIBRARY_PATH') or '']),
          'PYTHON_BIN_PATH':options['numpy-python-command'],
-         'PYTHON_LIB_PATH':options['python27-lib'],
+         'PYTHON_LIB_PATH':options['python-lib'],
          'CC_OPT_FLAGS':'-march=native',
          'TF_NEED_JEMALLOC':'1',
          'TF_ENABLE_XLA':'0',

component/wget/buildout.cfg

@@ -26,6 +26,10 @@ configure-options =
   --with-zlib-lib=${zlib:location}
 
 environment =
+# Python 3 is used for things we don't need. This is an optional dependency,
+# unless PYTHON is set (previously set by [python]): wget complains (rightly)
+# if it points to Python 2.7 (which we may still use).
+  PYTHON=
   PATH=${gettext:location}/bin:${lunzip:location}/bin:${patch:location}/bin:${perl:location}/bin:${pkgconfig:location}/bin:%(PATH)s
   PKG_CONFIG_PATH=${openssl:location}/lib/pkgconfig
   LDFLAGS=-L${zlib:location}/lib -Wl,-rpath=${zlib:location}/lib -L${openssl:location}/lib -L${pcre:location}/lib -Wl,-rpath=${pcre:location}/lib -Wl,-rpath=${openssl:location}/lib

software/davstorage/common.cfg

@@ -8,7 +8,6 @@ extends =
   ../../component/dcron/buildout.cfg
   ../../component/logrotate/buildout.cfg
   ../../component/lxml-python/buildout.cfg
-  ../../component/python-2.7/buildout.cfg
   ../../component/gzip/buildout.cfg
 
 parts =
@@ -24,7 +23,6 @@ module = davstorage
 
 [instance-recipe-egg]
 recipe = zc.recipe.egg
-python = python2.7
 eggs = ${instance-recipe:egg}
 
 [application]

software/etherpad-lite/common.cfg

@@ -11,7 +11,6 @@ extends =
   ../../component/dcron/buildout.cfg
   ../../component/logrotate/buildout.cfg
   ../../component/lxml-python/buildout.cfg
-  ../../component/python-2.7/buildout.cfg
   ../../component/gzip/buildout.cfg
   ../../component/git/buildout.cfg
   ../../component/nodejs/buildout.cfg

software/gateone/software.cfg

@@ -11,7 +11,6 @@ extends =
   ../../component/python-kerberos/buildout.cfg
   ../../component/gateone/buildout.cfg
   ../../component/dtach/buildout.cfg
-  ../../component/python-2.7/buildout.cfg
   ../../component/nginx/buildout.cfg
   ../../stack/slapos.cfg
 

software/hellorina/instance-root.cfg.in

@@ -32,7 +32,7 @@ return =
 
 [proxy]
 recipe = slapos.cookbook:wrapper
-command-line = {{ python_location }}/bin/python2.7 {{ rina_proxy }} ${server:instance-guid} ${:ipv6} ${:port}
+command-line = {{ python_executable }} {{ rina_proxy }} ${server:instance-guid} ${:ipv6} ${:port}
 wrapper-path = ${directory:service}/proxy
 environment =
   PATH={{ rina_tools_location }}/bin:%(PATH)s

software/hellorina/instance.cfg.in

@@ -28,7 +28,7 @@ template = {{ instance_root }}
 extra-context =
     import urlparse urlparse
     key ipv6 slap-configuration:ipv6-random
-    raw python_location {{ python_location }}
+    raw python_executable {{ python_executable }}
     raw rina_proxy {{ rina_proxy }}
 
 [server]

software/hellorina/software.cfg

@@ -9,13 +9,13 @@ parts =
 [template]
 recipe = slapos.recipe.template:jinja2
 template = ${:_profile_base_location_}/instance.cfg.in
-md5sum = e513082329961dfbbcec94e817f1e3bc
+md5sum = f6c61225990986d94d0017b07b873aa7
 # XXX: "template.cfg" is hardcoded in instanciation recipe
 rendered = ${buildout:directory}/template.cfg
 context =
     key develop_eggs_directory buildout:develop-eggs-directory
     key eggs_directory buildout:eggs-directory
-    key python_location python2.7:location
+    key python_executable python:executable
     key rina_tools_location rina-tools:location
     key instance_root instance-root:target
     key instance_server instance-server:target
@@ -29,7 +29,7 @@ mode = 644
 
 [instance-root]
 <= download-base
-md5sum = 8ba6905c430e69a14db1be386f932c0f
+md5sum = f647054be67998f9eece174f106c4464
 
 [instance-server]
 <= download-base

software/kvm/software-py3.cfg

 [buildout]
 extends =
-  ../../component/python3/buildout.cfg
   software.cfg
 
-python = python3
-
 # Ignore these for now
 common-parts -=
   rdiff-backup
+
+[python]
+part = python3

software/monitor/software.cfg

@@ -8,8 +8,6 @@ extends =
   ../../stack/slapos.cfg
   ../../component/python3/buildout.cfg
 
-python = python3
-
 parts =
   slapos-cookbook
   network-bench-cfg
@@ -19,6 +17,9 @@ parts =
   template-monitor
   monitor-collect-csv-dump
 
+[python]
+part = python3
+
 [template]
 recipe = slapos.recipe.template
 url = ${:_profile_base_location_}/${:filename}

software/neotest/buildout.hash.cfg

@@ -14,7 +14,7 @@
 # not need these here).
 [neotest-env.sh]
 filename = neotest-env.sh.in
-md5sum = 595eebbbcb56b6a8464d48833cfae57b
+md5sum = bd46e95f1cea62c3b0082fe8c0c9c90b
 
 [neotest]
 filename = neotest.in

software/neotest/neotest-env.sh.in

@@ -9,7 +9,7 @@ PATH="${ioping:location}/bin:$PATH"
 PATH="${lmbench:location}/bin:$PATH"
 PATH="${mariadb:location}/bin:$PATH"
 PATH="${mariadb:location}/scripts:$PATH"
-PATH="${python2.7:location}/bin:$PATH"
+PATH="${python:location}/bin:$PATH"
 
 # add all eggs and develop-eggs to py path
 #

software/nextcloud/software.cfg

@@ -2,7 +2,6 @@
 extends =
   buildout.hash.cfg
   ../../component/redis/buildout.cfg
-  ../../component/python3/buildout.cfg
   ../../stack/lamp/buildout.cfg
 
 [nc-download-base]

software/slapos-sr-testing/software-py3.cfg

 [buildout]
-
 extends =
-  ../../component/python3/buildout.cfg
   software.cfg
 
-python = python3
+[python]
+part = python3
 
 [eggs]
 eggs -=

software/slapos-testing/software-py3.cfg

 [buildout]
 extends =
-  ../../component/python3/buildout.cfg
   software.cfg
-python = python3
 
-[nghttp2]
-environment =
-  PATH=${autoconf:location}/bin:${automake:location}/bin:${libtool:location}/bin:${m4:location}/bin:${python3:location}/bin:%(PATH)s
+[python]
+part = python3
 
 [supervisor-repository]
 <= git-clone-repository

software/slaprunner/buildout.hash.cfg

@@ -18,7 +18,7 @@ md5sum = ec70348dd71b319590a5c5837f3d2e45
 
 [template-runner]
 filename = instance-runner.cfg
-md5sum = f342daca2e87f8fa44fd7b6a2a1c22f8
+md5sum = 7100c6678576c285322f1445029cd4f2
 
 [template-runner-import-script]
 filename = template/runner-import.sh.jinja2

software/slaprunner/instance-runner.cfg

@@ -692,7 +692,7 @@ hash-existing-files = $${buildout:directory}/software_release/buildout.cfg
 
 [shell-environment]
 shell = ${bash:location}/bin/bash
-path = ${nano:location}/bin:${vim:location}/bin:${screen:location}/bin:${tmux:location}/bin:${git:location}/bin:${curl:location}/bin:${python2.7:location}/bin:${tig:location}/bin:${zip:location}/bin:${mosh:location}/bin:${bash:location}/bin:${fish-shell:location}/bin:$${directory:bin}:/usr/bin:/bin/
+path = ${nano:location}/bin:${vim:location}/bin:${screen:location}/bin:${tmux:location}/bin:${git:location}/bin:${curl:location}/bin:${python:location}/bin:${tig:location}/bin:${zip:location}/bin:${mosh:location}/bin:${bash:location}/bin:${fish-shell:location}/bin:$${directory:bin}:/usr/bin:/bin/
 
 [prepare-software]
 recipe = slapos.cookbook:wrapper

software/slaprunner/software-py3.cfg

 [buildout]
 extends =
-  ../../component/python3/buildout.cfg
   software.cfg
 
-python = python3
-
 # Ignore these for now
 common-parts -=
   rdiff-backup
 
+[python]
+part = python3
+
 [python-with-eggs]
 eggs -=
 # futures is a backport of Py3's concurrent.futures module

software/slaprunner/software.cfg

@@ -18,7 +18,6 @@ extends =
   ../../component/mosh/buildout.cfg
   ../../component/rsync/buildout.cfg
   ../../component/pycurl/buildout.cfg
-  ../../component/python-2.7/buildout.cfg
   ../../component/screen/buildout.cfg
   ../../component/shellinabox/buildout.cfg
   ../../component/vim/buildout.cfg

software/theia/software.cfg

 [buildout]
 extends =
-   ../../component/python3/buildout.cfg
-   ../../component/python-2.7/buildout.cfg
    ../../component/nodejs/buildout.cfg
    ../../component/caddy/buildout.cfg
    ../../component/git/buildout.cfg
@@ -56,7 +54,7 @@ mode = 0644
 [theia]
 recipe = plone.recipe.command
 command = ${bash:location}/bin/bash -c "
-  export TMPDIR=${:location}/tmp PATH=${nodejs:location}/bin/:${python2.7:location}/bin/:$PATH &&
+  export TMPDIR=${:location}/tmp PATH=${nodejs:location}/bin:$PATH &&
   mkdir -p ${:location} && \
   mkdir -p \$TMPDIR && \
   mkdir -p ${:THEIA_DEFAULT_PLUGINS} && \

software/varnish/software.cfg

@@ -8,7 +8,6 @@ extends =
   ../../component/gzip/buildout.cfg
   ../../component/logrotate/buildout.cfg
   ../../component/pycurl/buildout.cfg
-  ../../component/python-2.7/buildout.cfg
   ../../component/stunnel/buildout.cfg
   ../../component/varnish/buildout.cfg
   ../../component/wget/buildout.cfg

stack/cloudooo.cfg

@@ -23,7 +23,6 @@ extends =
   ../component/mesa/buildout.cfg
   ../component/onlyoffice-core/buildout.cfg
   ../component/poppler/buildout.cfg
-  ../component/python-2.7/buildout.cfg
   ../component/rdiff-backup/buildout.cfg
   ../component/xorg/buildout.cfg
 

stack/slapos.cfg

@@ -2,8 +2,6 @@
 # Software Releases or Stacks can safely extend this stack.
 
 [buildout]
-python = python2.7
-
 # Developers need to add explicitely this part in their software profile
 # parts = slapos-cookbook
 # Note that if you want a develop version of slapos-cookbook from a git
@@ -22,9 +20,9 @@ allow-picked-versions = false
 
 # Use shacache and lxml
 extends =
+  ../component/defaults.cfg
   ../component/git/buildout.cfg
   ../component/lxml-python/buildout.cfg
-  ../component/python-2.7/buildout.cfg
   ../component/python-cffi/buildout.cfg
   ../component/python-cliff/buildout.cfg
   ../component/python-cachecontrol/buildout.cfg