diff --git a/stack/erp5/buildout.cfg b/stack/erp5/buildout.cfg
index 24b4c6973733213944e48d9ddbd388d92ba7f604..edddda3aafc817770ed6f3ae7809dbbb0d40ca89 100644
--- a/stack/erp5/buildout.cfg
+++ b/stack/erp5/buildout.cfg
@@ -5,12 +5,8 @@ extends =
   ztk-versions.cfg
   zope-versions.cfg
   buildout.hash.cfg
-  ../../component/cups/buildout.cfg
-  ../../component/dbus/buildout.cfg
-  ../../component/file/buildout.cfg
   ../../component/fonts/buildout.cfg
   ../../component/gcc/buildout.cfg
-  ../../component/ghostscript/buildout.cfg
   ../../component/git/buildout.cfg
   ../../component/graphviz/buildout.cfg
   ../../component/gzip/buildout.cfg
@@ -19,13 +15,9 @@ extends =
   ../../component/findutils/buildout.cfg
   ../../component/librsvg/buildout.cfg
   ../../component/imagemagick/buildout.cfg
-  ../../component/inkscape/buildout.cfg
   ../../component/kumo/buildout.cfg
   ../../component/libdmtx/buildout.cfg
-  ../../component/libffi/buildout.cfg
-  ../../component/libpng/buildout.cfg
   ../../component/matplotlib/buildout.cfg
-  ../../component/mesa/buildout.cfg
   ../../component/numpy/buildout.cfg
   ../../component/statsmodels/buildout.cfg
   ../../component/h5py/buildout.cfg
@@ -44,7 +36,6 @@ extends =
   ../../component/subversion/buildout.cfg
   ../../component/tesseract/buildout.cfg
   ../../component/w3m/buildout.cfg
-  ../../component/xorg/buildout.cfg
   ../../component/poppler/buildout.cfg
   ../../component/zabbix/buildout.cfg
   ../../component/sed/buildout.cfg
@@ -56,11 +47,9 @@ extends =
   ../../component/aspell/buildout.cfg
   ../../component/jsl/buildout.cfg
   ../../component/6tunnel/buildout.cfg
-  ../../component/findutils/buildout.cfg
   ../../component/userhosts/buildout.cfg
   ../../component/postfix/buildout.cfg
   ../../component/zbarlight/buildout.cfg
-  ../../component/perl/buildout.cfg
   ../../component/pylint/buildout.cfg
   ../../stack/caucase/buildout.cfg
   ../../software/jupyter/software.cfg
@@ -71,52 +60,20 @@ parts +=
   erp5-util-develop
   slapos-cookbook
   rdiff-backup
-  aspell
   aspell-en-dictionary
-  apache
   apache-antiloris
-  file
-  findutils
-  graphviz
-  haproxy
-  jsl
-  w3m
-  poppler
-  libpng
-  ghostscript
   mroonga-mariadb
-  imagemagick
-  inkscape
-  libdmtx
-  dmtx-utils
-  kumo
   tesseract
   tesseract-eng-traineddata
   tesseract-osd-traineddata
-  scipy
-  ocropy
   hookbox
-  percona-toolkit
   zabbix-agent
-  dash
-  bash
-  wget
-  userhosts
-  postfix
 
 # Buildoutish
-  eggs
   eggs-all-scripts
   testrunner
   test_suite_runner
 
-# basic Xorg
-  libXdmcp
-  libXext
-  libXau
-  libSM
-  libXrender
-
 # fonts
   liberation-fonts
   ipaex-fonts
@@ -124,9 +81,7 @@ parts +=
   ocrb-fonts
   android-fonts
 
-
 # get git repositories
-  erp5
   genbt5list
 
 # some additional utils
@@ -136,9 +91,7 @@ parts +=
   template
 
 # jupyter
-  jupyter
   jupyter-notebook-initialized-scripts
-  instance-jupyter-notebook
 
 # override python2.7 to add SlapOS libstdc++ in RPATH.
 [python2.7]
@@ -225,47 +178,24 @@ context =
     key mariadb_link_binary template-mariadb:link-binary
     key zope_link_binary template-zope:link-binary
     key apache_location apache:location
-    key aspell_location aspell:location
     key bin_directory buildout:bin-directory
     key buildout_bin_directory buildout:bin-directory
-    key cairo_location cairo:location
     key caucase_jinja2_library caucase-jinja2-library:target
     key coreutils_location coreutils:location
-    key cups_location cups:location
     key curl_location curl:location
     key cyrus_sasl_location cyrus-sasl:location
     key dash_location dash:location
     key bash_location bash:location
-    key dbus_glib_location dbus-glib:location
-    key dbus_location dbus:location
     key dcron_location dcron:location
     key default_cloudooo_url erp5-defaults:cloudooo-connection-url
     key erp5_location erp5:location
-    key file_location file:location
     key findutils_location findutils:location
-    key fontconfig_location fontconfig:location
-    key fonts_location fonts:location
-    key freetype_location freetype:location
-    key glib_location glib:location
-    key glu_location glu:location
     key gzip_location gzip:location
     key haproxy_location haproxy:location
-    key imagemagick_location imagemagick:location
     key instance_common_cfg instance-common:rendered
     key jsl_location jsl:location
     key jupyter_enable_default erp5-defaults:jupyter-enable-default
     key kumo_location kumo:location
-    key libICE_location libICE:location
-    key libSM_location libSM:location
-    key libX11_location libX11:location
-    key libXau_location libXau:location
-    key libXdmcp_location libXdmcp:location
-    key libXext_location libXext:location
-    key libXrender_location libXrender:location
-    key libexpat_location libexpat:location
-    key libffi_location libffi:location
-    key librsvg_location librsvg:location
-    key libxcb_location libxcb:location
     key local_bt5_repository local-bt5-repository:list
     key logrotate_location logrotate:location
     key mariadb_location mariadb:location
@@ -273,13 +203,10 @@ context =
     key mariadb_slow_query_report_script mariadb-slow-query-report-script:target
     key mariadb_start_clone_from_backup mariadb-start-clone-from-backup:target
     key matplotlibrc_location matplotlibrc:location
-    key mesa_location mesa:location
     key parts_directory buildout:parts-directory
     key openssl_location openssl:location
     key percona_toolkit_location percona-toolkit:location
     key perl_dbd_mariadb_path perl-DBD-mariadb:perl-PATH
-    key pixman_location pixman:location
-    key poppler_location poppler:location
     key postfix_location postfix:location
     key root_common root-common:target
     key site_zcml site-zcml:target
@@ -306,9 +233,6 @@ context =
     key userhosts_location userhosts:location
     key unixodbc_location unixodbc:location
     key wget_location wget:location
-    key xdamage_location xdamage:location
-    key xfixes_location xfixes:location
-    key zlib_location zlib:location
     key extra_path_list eggs:extra-paths
 
 [template-erp5]