diff --git a/Golden_Repo/a/Autoconf/Autoconf-2.71-GCCcore-11.2.0.eb b/Golden_Repo/a/Autoconf/Autoconf-2.71-GCCcore-11.2.0.eb
deleted file mode 100644
index 680bfb39e579f84be2c165a230e345ec05e518d2..0000000000000000000000000000000000000000
--- a/Golden_Repo/a/Autoconf/Autoconf-2.71-GCCcore-11.2.0.eb
+++ /dev/null
@@ -1,43 +0,0 @@
-easyblock = 'ConfigureMake'
-
-name = 'Autoconf'
-version = '2.71'
-
-homepage = 'https://www.gnu.org/software/autoconf/'
-
-description = """
- Autoconf is an extensible package of M4 macros that produce shell scripts
- to automatically configure software source code packages. These scripts can
- adapt the packages to many kinds of UNIX-like systems without manual user
- intervention. Autoconf creates a configuration script for a package from a
- template file that lists the operating system features that the package can
- use, in the form of M4 macro calls.
-"""
-
-site_contacts = 'sc@fz-juelich.de'
-
-toolchain = {'name': 'GCCcore', 'version': '11.2.0'}
-
-source_urls = [GNU_SOURCE]
-sources = [SOURCELOWER_TAR_GZ]
-checksums = ['431075ad0bf529ef13cb41e9042c542381103e80015686222b8a9d4abef42a1c']
-
-builddependencies = [
-    ('binutils', '2.37'),
-    # non-standard Perl modules are required,
-    # see https://github.com/easybuilders/easybuild-easyconfigs/issues/1822
-    ('Perl', '5.34.0'),
-]
-
-dependencies = [
-    ('M4', '1.4.19'),
-]
-
-sanity_check_paths = {
-    'files': ["bin/%s" % x
-              for x in ["autoconf", "autoheader", "autom4te", "autoreconf",
-                        "autoscan", "autoupdate", "ifnames"]],
-    'dirs': [],
-}
-
-moduleclass = 'devel'
diff --git a/Golden_Repo/a/Automake/Automake-1.16.4-GCCcore-11.2.0.eb b/Golden_Repo/a/Automake/Automake-1.16.4-GCCcore-11.2.0.eb
deleted file mode 100644
index 230fe29833b6e35821bc0f88797ff712b51efb67..0000000000000000000000000000000000000000
--- a/Golden_Repo/a/Automake/Automake-1.16.4-GCCcore-11.2.0.eb
+++ /dev/null
@@ -1,34 +0,0 @@
-easyblock = 'ConfigureMake'
-
-name = 'Automake'
-version = '1.16.4'
-
-homepage = 'https://www.gnu.org/software/automake/automake.html'
-
-description = "Automake: GNU Standards-compliant Makefile generator"
-
-site_contacts = 'sc@fz-juelich.de'
-
-toolchain = {'name': 'GCCcore', 'version': '11.2.0'}
-
-source_urls = [GNU_SOURCE]
-sources = [SOURCELOWER_TAR_GZ]
-checksums = ['8a0f0be7aaae2efa3a68482af28e5872d8830b9813a6a932a2571eac63ca1794']
-
-builddependencies = [
-    ('binutils', '2.37'),
-    # non-standard Perl modules are required,
-    # see https://github.com/easybuilders/easybuild-easyconfigs/issues/1822
-    ('Perl', '5.34.0'),
-]
-
-dependencies = [
-    ('Autoconf', '2.71'),
-]
-
-sanity_check_paths = {
-    'files': ['bin/automake', 'bin/aclocal'],
-    'dirs': []
-}
-
-moduleclass = 'devel'
diff --git a/Golden_Repo/a/Autotools/Autotools-20210726-GCCcore-11.2.0.eb b/Golden_Repo/a/Autotools/Autotools-20210726-GCCcore-11.2.0.eb
deleted file mode 100644
index 9b278afdca11e4b84473a5d33e775d431e6ab2a7..0000000000000000000000000000000000000000
--- a/Golden_Repo/a/Autotools/Autotools-20210726-GCCcore-11.2.0.eb
+++ /dev/null
@@ -1,26 +0,0 @@
-easyblock = 'Bundle'
-
-name = 'Autotools'
-version = '20210726'  # date of the most recent change
-
-homepage = 'https://autotools.io'
-
-description = """
- This bundle collect the standard GNU build tools: Autoconf, Automake
- and libtool
-"""
-
-site_contacts = 'a.strube@fz-juelich.de'
-
-toolchain = {'name': 'GCCcore', 'version': '11.2.0'}
-
-dependencies = [
-    ('Autoconf', '2.71'),    # 20210128
-    ('Automake', '1.16.4'),  # 20210726
-    ('libtool', '2.4.6'),    # 20150215
-]
-
-# Pure bundle -- no need to specify 'binutils' used when building GCCcore
-# toolchain as build dependency
-
-moduleclass = 'devel'
diff --git a/Golden_Repo/l/libpciaccess/libpciaccess-0.16-GCCcore-11.2.0.eb b/Golden_Repo/l/libpciaccess/libpciaccess-0.16-GCCcore-11.2.0.eb
index 56d0c9048de71cfc517ccf83bf70a6a2499825bf..1bc4c4a5a344f37a869006a3b79c53b3322bb71f 100644
--- a/Golden_Repo/l/libpciaccess/libpciaccess-0.16-GCCcore-11.2.0.eb
+++ b/Golden_Repo/l/libpciaccess/libpciaccess-0.16-GCCcore-11.2.0.eb
@@ -14,7 +14,7 @@ checksums = ['84413553994aef0070cf420050aa5c0a51b1956b404920e21b81e96db6a61a27']
 
 builddependencies = [
     ('binutils', '2.37'),
-    ('Autotools', '20210726'),
+    ('Autotools', '20210726', '', SYSTEM),
     ('xorg-macros', '1.19.3'),
 ]
 
diff --git a/Golden_Repo/n/numactl/numactl-2.0.14.eb b/Golden_Repo/n/numactl/numactl-2.0.14.eb
index 9c8c95a57d46329d03c31de84d0332cae0a7b1f9..dc52fd4e58509a584761414acd693be023480cc7 100644
--- a/Golden_Repo/n/numactl/numactl-2.0.14.eb
+++ b/Golden_Repo/n/numactl/numactl-2.0.14.eb
@@ -23,7 +23,7 @@ checksums = ['1ee27abd07ff6ba140aaf9bc6379b37825e54496e01d6f7343330cf1a4487035']
 
 builddependencies = [
     ('binutils', '2.37'),
-    ('Autotools', '20210726'),
+    ('Autotools', '20210726', '', SYSTEM),
 ]
 
 preconfigopts = './autogen.sh && '
diff --git a/Golden_Repo/o/OpenMPI/OpenMPI-4.1.1-GCC-11.2.0.eb b/Golden_Repo/o/OpenMPI/OpenMPI-4.1.1-GCC-11.2.0.eb
index 9822e711da0dc47d7475231103b84aad9e990aed..b0ae5d684a531c124e91f9274f804eacdedc6ceb 100644
--- a/Golden_Repo/o/OpenMPI/OpenMPI-4.1.1-GCC-11.2.0.eb
+++ b/Golden_Repo/o/OpenMPI/OpenMPI-4.1.1-GCC-11.2.0.eb
@@ -24,7 +24,7 @@ osdependencies = [
 ]
 
 builddependencies = [
-    ('Autotools', '20210726'),
+    ('Autotools', '20210726', '', SYSTEM),
     ('pkg-config', '0.29.2'),
 ]
 
diff --git a/Golden_Repo/x/xorg-macros/xorg-macros-1.19.3-GCCcore-11.2.0.eb b/Golden_Repo/x/xorg-macros/xorg-macros-1.19.3-GCCcore-11.2.0.eb
index 7aef6f454d3c6d1628a6b9e2692bf99aed7e595c..bce3cc7a221e95f10a0bba7ae188e6ed9ca2999f 100644
--- a/Golden_Repo/x/xorg-macros/xorg-macros-1.19.3-GCCcore-11.2.0.eb
+++ b/Golden_Repo/x/xorg-macros/xorg-macros-1.19.3-GCCcore-11.2.0.eb
@@ -10,13 +10,15 @@ site_contacts = 'sc@fz-juelich.de'
 
 toolchain = {'name': 'GCCcore', 'version': '11.2.0'}
 
-source_urls = ['https://gitlab.freedesktop.org/xorg/util/macros/-/archive/util-macros-%(version)s']
+source_urls = [
+    'https://gitlab.freedesktop.org/xorg/util/macros/-/archive/util-macros-%(version)s'
+]
 sources = ['macros-util-macros-%(version)s.tar.gz']
 checksums = ['8205d210a580da0938f5ce4392a96b60cf1d9a5f792eaa1474fa4c1977aef4d0']
 
 builddependencies = [
     ('binutils', '2.37'),
-    ('Autotools', '20210726'),
+    ('Autotools', '20210726', '', SYSTEM),
 ]
 
 preconfigopts = './autogen.sh && '