diff --git a/easybuild/framework/easyconfig/easyconfig.py b/easybuild/framework/easyconfig/easyconfig.py
index f4c4be464e..c0e1810021 100644
--- a/easybuild/framework/easyconfig/easyconfig.py
+++ b/easybuild/framework/easyconfig/easyconfig.py
@@ -56,7 +56,6 @@
 from easybuild.framework.easyconfig.format.convert import Dependency
 from easybuild.framework.easyconfig.format.format import DEPENDENCY_PARAMETERS
 from easybuild.framework.easyconfig.format.one import EB_FORMAT_EXTENSION, retrieve_blocks_in_spec
-from easybuild.framework.easyconfig.format.yeb import YEB_FORMAT_EXTENSION, is_yeb_format
 from easybuild.framework.easyconfig.licenses import EASYCONFIG_LICENSES_DICT
 from easybuild.framework.easyconfig.parser import DEPRECATED_PARAMETERS, REPLACED_PARAMETERS
 from easybuild.framework.easyconfig.parser import EasyConfigParser, fetch_parameters_from_easyconfig
@@ -571,10 +570,7 @@ def __str__(self):
     def filename(self):
         """Determine correct filename for this easyconfig file."""
 
-        if is_yeb_format(self.path, self.rawtxt):
-            ext = YEB_FORMAT_EXTENSION
-        else:
-            ext = EB_FORMAT_EXTENSION
+        ext = EB_FORMAT_EXTENSION
 
         return '%s-%s%s' % (self.name, det_full_ec_version(self), ext)
 
diff --git a/easybuild/framework/easyconfig/format/yeb.py b/easybuild/framework/easyconfig/format/yeb.py
deleted file mode 100644
index acfab3fb22..0000000000
--- a/easybuild/framework/easyconfig/format/yeb.py
+++ /dev/null
@@ -1,169 +0,0 @@
-# #
-# Copyright 2013-2023 Ghent University
-#
-# This file is part of EasyBuild,
-# originally created by the HPC team of Ghent University (http://ugent.be/hpc/en),
-# with support of Ghent University (http://ugent.be/hpc),
-# the Flemish Supercomputer Centre (VSC) (https://www.vscentrum.be),
-# Flemish Research Foundation (FWO) (http://www.fwo.be/en)
-# and the Department of Economy, Science and Innovation (EWI) (http://www.ewi-vlaanderen.be/en).
-#
-# https://github.com/easybuilders/easybuild
-#
-# EasyBuild is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation v2.
-#
-# EasyBuild is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with EasyBuild.  If not, see <http://www.gnu.org/licenses/>.
-# #
-"""
-YAML easyconfig format (.yeb)
-Useful: http://www.yaml.org/spec/1.2/spec.html
-
-Authors:
-
-* Caroline De Brouwer (Ghent University)
-* Kenneth Hoste (Ghent University)
-"""
-import copy
-import os
-import platform
-
-from easybuild.base import fancylogger
-from easybuild.framework.easyconfig.format.format import EasyConfigFormat
-from easybuild.framework.easyconfig.format.pyheaderconfigobj import build_easyconfig_constants_dict
-from easybuild.tools import LooseVersion
-from easybuild.tools.py2vs3 import string_type
-from easybuild.tools.utilities import INDENT_4SPACES, only_if_module_is_available, quote_str
-
-
-_log = fancylogger.getLogger('easyconfig.format.yeb', fname=False)
-
-
-YAML_DIR = r'%YAML'
-YAML_SEP = '---'
-YEB_FORMAT_EXTENSION = '.yeb'
-YAML_SPECIAL_CHARS = set(":{}[],&*#?|-<>=!%@\\")
-
-
-def yaml_join(loader, node):
-    """
-    defines custom YAML join function.
-    see http://stackoverflow.com/questions/5484016/
-        how-can-i-do-string-concatenation-or-string-replacement-in-yaml/23212524#23212524
-    :param loader: the YAML Loader
-    :param node: the YAML (sequence) node
-    """
-    seq = loader.construct_sequence(node)
-    return ''.join([str(i) for i in seq])
-
-
-try:
-    import yaml
-    # register the tag handlers
-    if LooseVersion(platform.python_version()) < LooseVersion(u'2.7'):
-        yaml.add_constructor('!join', yaml_join)
-    else:
-        yaml.add_constructor(u'!join', yaml_join, Loader=yaml.SafeLoader)
-except ImportError:
-    pass
-
-
-class FormatYeb(EasyConfigFormat):
-    """Support for easyconfig YAML format"""
-    USABLE = True
-
-    def __init__(self):
-        """FormatYeb constructor"""
-        super(FormatYeb, self).__init__()
-        self.log.experimental("Parsing .yeb easyconfigs")
-
-    def validate(self):
-        """Format validation"""
-        _log.info(".yeb format validation isn't implemented (yet) - validation always passes")
-        return True
-
-    def get_config_dict(self):
-        """
-        Return parsed easyconfig as a dictionary, based on specified arguments.
-        """
-        # avoid passing anything by reference, so next time get_config_dict is called
-        # we can be sure we return a dictionary that correctly reflects the contents of the easyconfig file
-        return copy.deepcopy(self.parsed_yeb)
-
-    @only_if_module_is_available('yaml')
-    def parse(self, txt):
-        """
-        Process YAML file
-        """
-        txt = self._inject_constants_dict(txt)
-        if LooseVersion(platform.python_version()) < LooseVersion(u'2.7'):
-            self.parsed_yeb = yaml.load(txt)
-        else:
-            self.parsed_yeb = yaml.load(txt, Loader=yaml.SafeLoader)
-
-    def _inject_constants_dict(self, txt):
-        """Inject constants so they are resolved when actually parsing the YAML text."""
-        constants_dict = build_easyconfig_constants_dict()
-
-        lines = txt.splitlines()
-
-        # extract possible YAML header, for example
-        # %YAML 1.2
-        # ---
-        yaml_header = []
-        for i, line in enumerate(lines):
-            if line.startswith(YAML_DIR):
-                if lines[i + 1].startswith(YAML_SEP):
-                    yaml_header.extend([lines.pop(i), lines.pop(i)])
-
-        injected_constants = ['__CONSTANTS__: ']
-        for key, value in constants_dict.items():
-            injected_constants.append('%s- &%s %s' % (INDENT_4SPACES, key, quote_str(value)))
-
-        full_txt = '\n'.join(yaml_header + injected_constants + lines)
-
-        return full_txt
-
-    def dump(self, ecfg, default_values, templ_const, templ_val, toolchain_hierarchy=None):
-        """Dump parsed easyconfig in .yeb format"""
-        raise NotImplementedError("Dumping of .yeb easyconfigs not supported yet")
-
-    def extract_comments(self, txt):
-        """Extract comments from easyconfig file"""
-        self.log.debug("Not extracting comments from .yeb easyconfigs")
-
-
-def is_yeb_format(filename, rawcontent):
-    """
-    Determine whether easyconfig is in .yeb format.
-    If filename is None, rawcontent will be used to check the format.
-    """
-    isyeb = False
-    if filename:
-        isyeb = os.path.splitext(filename)[-1] == YEB_FORMAT_EXTENSION
-    else:
-        # if one line like 'name: ' is found, this must be YAML format
-        for line in rawcontent.splitlines():
-            if line.startswith('name: '):
-                isyeb = True
-    return isyeb
-
-
-def quote_yaml_special_chars(val):
-    """
-    Single-quote values that contain special characters, specifically to be used in YAML context (.yeb files)
-    Single quotes inside the string are escaped by doubling them.
-    (see: http://symfony.com/doc/current/components/yaml/yaml_format.html#strings)
-    """
-    if isinstance(val, string_type):
-        if "'" in val or YAML_SPECIAL_CHARS.intersection(val):
-            val = "'%s'" % val.replace("'", "''")
-
-    return val
diff --git a/easybuild/framework/easyconfig/parser.py b/easybuild/framework/easyconfig/parser.py
index fa01d1b297..a9b084cc12 100644
--- a/easybuild/framework/easyconfig/parser.py
+++ b/easybuild/framework/easyconfig/parser.py
@@ -37,7 +37,6 @@
 from easybuild.base import fancylogger
 from easybuild.framework.easyconfig.format.format import FORMAT_DEFAULT_VERSION
 from easybuild.framework.easyconfig.format.format import get_format_version, get_format_version_classes
-from easybuild.framework.easyconfig.format.yeb import FormatYeb, is_yeb_format
 from easybuild.framework.easyconfig.types import PARAMETER_TYPES, check_type_of_param_value
 from easybuild.tools.build_log import EasyBuildError
 from easybuild.tools.filetools import read_file, write_file
@@ -189,11 +188,8 @@ def _get_format_version_class(self):
     def _set_formatter(self, filename):
         """Obtain instance of the formatter"""
         if self._formatter is None:
-            if is_yeb_format(filename, self.rawcontent):
-                self._formatter = FormatYeb()
-            else:
-                klass = self._get_format_version_class()
-                self._formatter = klass()
+            klass = self._get_format_version_class()
+            self._formatter = klass()
         self._formatter.parse(self.rawcontent)
 
     def set_format_text(self):
diff --git a/easybuild/framework/easyconfig/tools.py b/easybuild/framework/easyconfig/tools.py
index 62968f9de0..48dc1910b0 100644
--- a/easybuild/framework/easyconfig/tools.py
+++ b/easybuild/framework/easyconfig/tools.py
@@ -51,7 +51,6 @@
 from easybuild.framework.easyconfig.easyconfig import EASYCONFIGS_ARCHIVE_DIR, ActiveMNS, EasyConfig
 from easybuild.framework.easyconfig.easyconfig import create_paths, det_file_info, get_easyblock_class
 from easybuild.framework.easyconfig.easyconfig import process_easyconfig
-from easybuild.framework.easyconfig.format.yeb import quote_yaml_special_chars
 from easybuild.framework.easyconfig.style import cmdline_easyconfigs_style_check
 from easybuild.tools import LooseVersion
 from easybuild.tools.build_log import EasyBuildError, print_msg, print_warning
@@ -412,7 +411,7 @@ def parse_easyconfigs(paths, validate=True):
     return easyconfigs, generated_ecs
 
 
-def stats_to_str(stats, isyeb=False):
+def stats_to_str(stats):
     """
     Pretty print build statistics to string.
     """
@@ -422,13 +421,7 @@ def stats_to_str(stats, isyeb=False):
     txt = "{\n"
     pref = "    "
     for key in sorted(stats):
-        if isyeb:
-            val = stats[key]
-            if isinstance(val, tuple):
-                val = list(val)
-            key, val = quote_yaml_special_chars(key), quote_yaml_special_chars(val)
-        else:
-            key, val = quote_str(key), quote_str(stats[key])
+        key, val = quote_str(key), quote_str(stats[key])
         txt += "%s%s: %s,\n" % (pref, key, val)
     txt += "}"
     return txt
diff --git a/easybuild/tools/options.py b/easybuild/tools/options.py
index 761cdc262f..100fd6a72f 100644
--- a/easybuild/tools/options.py
+++ b/easybuild/tools/options.py
@@ -55,7 +55,6 @@
 from easybuild.framework.easyconfig.easyconfig import HAVE_AUTOPEP8
 from easybuild.framework.easyconfig.format.one import EB_FORMAT_EXTENSION
 from easybuild.framework.easyconfig.format.pyheaderconfigobj import build_easyconfig_constants_dict
-from easybuild.framework.easyconfig.format.yeb import YEB_FORMAT_EXTENSION
 from easybuild.framework.easyconfig.tools import alt_easyconfig_paths, get_paths_for
 from easybuild.toolchains.compiler.systemcompiler import TC_CONSTANT_SYSTEM
 from easybuild.tools import LooseVersion, build_log, run  # build_log should always stay there, to ensure EasyBuildLog
@@ -1160,11 +1159,11 @@ def _postprocess_config(self):
             # which makes it susceptible to 'eating' the following argument/option;
             # for example: with 'eb -r foo', 'foo' must be an existing directory (or 'eb foo -r' should be used);
             # when multiple directories are specified, we deliberately do not enforce that all of them exist;
-            # if a single argument is passed to --robot/-r that ends with '.eb' or '.yeb', we assume it's an easyconfig
+            # if a single argument is passed to --robot/-r that ends with '.eb' we assume it's an easyconfig
             if len(self.options.robot) == 1:
                 robot_arg = self.options.robot[0]
                 if not os.path.isdir(robot_arg):
-                    if robot_arg.endswith(EB_FORMAT_EXTENSION) or robot_arg.endswith(YEB_FORMAT_EXTENSION):
+                    if robot_arg.endswith(EB_FORMAT_EXTENSION):
                         info_msg = "Sole --robot argument %s is not an existing directory, "
                         info_msg += "promoting it to a stand-alone argument since it looks like an easyconfig file name"
                         self.log.info(info_msg, robot_arg)
diff --git a/easybuild/tools/repository/filerepo.py b/easybuild/tools/repository/filerepo.py
index c7d0cb366d..a35c7054f0 100644
--- a/easybuild/tools/repository/filerepo.py
+++ b/easybuild/tools/repository/filerepo.py
@@ -43,7 +43,6 @@
 
 from easybuild.framework.easyconfig.easyconfig import EasyConfig
 from easybuild.framework.easyconfig.format.one import EB_FORMAT_EXTENSION
-from easybuild.framework.easyconfig.format.yeb import YEB_FORMAT_EXTENSION, is_yeb_format
 from easybuild.framework.easyconfig.tools import stats_to_str
 from easybuild.tools.filetools import copy_file, mkdir, read_file, write_file
 from easybuild.tools.repository.repository import Repository
@@ -85,14 +84,8 @@ def add_easyconfig(self, cfg, name, version, stats, previous):
         # create directory for eb file
         full_path = os.path.join(self.wc, self.subdir, name)
 
-        yeb_format = is_yeb_format(cfg, None)
-        if yeb_format:
-            extension = YEB_FORMAT_EXTENSION
-            prefix = "buildstats: ["
-
-        else:
-            extension = EB_FORMAT_EXTENSION
-            prefix = "buildstats = ["
+        extension = EB_FORMAT_EXTENSION
+        prefix = "buildstats = ["
 
         # destination
         dest = os.path.join(full_path, "%s-%s%s" % (name, version, extension))
@@ -109,10 +102,10 @@ def add_easyconfig(self, cfg, name, version, stats, previous):
         if previous:
             statstxt = statscomment + statsprefix + '\n'
             for entry in previous + [stats]:
-                statstxt += stats_to_str(entry, isyeb=yeb_format) + ',\n'
+                statstxt += stats_to_str(entry) + ',\n'
             statstxt += statssuffix
         else:
-            statstxt = statscomment + statsprefix + stats_to_str(stats, isyeb=yeb_format) + statssuffix
+            statstxt = statscomment + statsprefix + stats_to_str(stats) + statssuffix
 
         txt += statstxt
         write_file(dest, txt)
diff --git a/easybuild/tools/systemtools.py b/easybuild/tools/systemtools.py
index 627da42bb6..cafef4ba73 100644
--- a/easybuild/tools/systemtools.py
+++ b/easybuild/tools/systemtools.py
@@ -211,7 +211,7 @@
     'python-hglib': ('hglib', "using Mercurial repository as easyconfigs archive"),
     'requests': (None, "fallback library for downloading files"),
     'Rich': (None, "eb command rich terminal output"),
-    'PyYAML': ('yaml', "easystack files and .yeb easyconfig format"),
+    'PyYAML': ('yaml', "easystack files easyconfig format"),
     'setuptools': ('pkg_resources', "obtaining information on Python packages via pkg_resources module"),
 }
 
diff --git a/test/framework/easyconfigs/test_ecs/p/Python/Python-2.7.10-intel-2018a.eb b/test/framework/easyconfigs/test_ecs/p/Python/Python-2.7.10-intel-2018a.eb
index b2195b5ce0..a4fba84756 100644
--- a/test/framework/easyconfigs/test_ecs/p/Python/Python-2.7.10-intel-2018a.eb
+++ b/test/framework/easyconfigs/test_ecs/p/Python/Python-2.7.10-intel-2018a.eb
@@ -29,8 +29,7 @@ dependencies = [
     # it's nice to have an up to date openssl for security reasons
 ]
 
-# zlib is only included here for the sake of testing parsing of .yeb easyconfigs!
-osdependencies = ['zlib', ('openssl-devel', 'libssl-dev', 'libopenssl-devel')]
+osdependencies = [('openssl-devel', 'libssl-dev', 'libopenssl-devel')]
 
 # order is important!
 # package versions updated May 28th 2015
diff --git a/test/framework/easyconfigs/yeb/CrayCCE-5.1.29.yeb b/test/framework/easyconfigs/yeb/CrayCCE-5.1.29.yeb
deleted file mode 100644
index 7244848a78..0000000000
--- a/test/framework/easyconfigs/yeb/CrayCCE-5.1.29.yeb
+++ /dev/null
@@ -1,18 +0,0 @@
-easyblock: Toolchain
-
-name: CrayCCE
-version: 5.1.29
-
-homepage: (none)
-description: Toolchain using Cray compiler wrapper, using PrgEnv-cray module.
-
-toolchain: system, system
-
-dependencies:
-    # also loads cray-libsci
-    - name: PrgEnv-cray/5.1.29
-      external_module: true
-    - name: fftw/3.3.4.0
-      external_module: true
-
-moduleclass: toolchain
diff --git a/test/framework/easyconfigs/yeb/Python-2.7.10-intel-2018a.yeb b/test/framework/easyconfigs/yeb/Python-2.7.10-intel-2018a.yeb
deleted file mode 100644
index 527f7bf8a5..0000000000
--- a/test/framework/easyconfigs/yeb/Python-2.7.10-intel-2018a.yeb
+++ /dev/null
@@ -1,131 +0,0 @@
-_internal_variables_:
-    - &numpyversion 1.9.2
-    - &scipyversion 0.15.1
-
-easyblock: ConfigureMake
-
-name: Python
-version: 2.7.10
-
-homepage: http://python.org/
-description: |
-    Python is a programming language that lets you work more quickly and integrate your systems
-    more effectively.
-
-toolchain: {name: intel, version: 2018a}
-toolchainopts: {pic: True, opt: True, optarch: True}
-
-source_urls: ['http://www.python.org/ftp/python/%(version)s/']
-sources: [*SOURCE_TGZ]
-
-# python needs bzip2 to build the bz2 package
-# commented out for testing to avoid having to add them all - dependencies are tested in other files
-dependencies: [
-#    [bzip2, 1.0.6],
-#    [zlib, 1.2.8],
-#    [libreadline, '6.3'],
-#    [ncurses, '5.9'],
-#    [SQLite, 3.8.10.2],
-#    [Tk, 8.6.4, -no-X11],
-#    [OpenSSL, 1.0.1m],  # OS dependency should be preferred if the os version is more recent then this version, its
-#    nice to have an up to date openssl for security reasons
-]
-
-# zlib is only included here for the sake of testing parsing of .yeb easyconfigs!
-osdependencies: [zlib, [openssl-devel, libssl-dev, libopenssl-devel]]
-
-# order is important!
-# package versions updated May 28th 2015
-exts_list: [
-    [setuptools, '16.0', {
-        source_urls: ["https://pypi.python.org/packages/source/s/setuptools/"],
-    }],
-    [pip, 7.0.1, {
-        source_urls: ["https://pypi.python.org/packages/source/p/pip/"],
-    }],
-    [nose, 1.3.6, {
-        source_urls: ["https://pypi.python.org/packages/source/n/nose/"],
-    }],
-    [numpy, *numpyversion, {
-        source_urls: [
-            [!join ["http://sourceforge.net/projects/numpy/files/NumPy/", *numpyversion], download]
-        ],
-        patches: [
-            numpy-1.8.0-mkl.patch, # % numpyversion,
-        ],
-    }],
-    [scipy, *scipyversion, {
-        source_urls: [
-            [!join ["http://sourceforge.net/projects/scipy/files/scipy/", *scipyversion], download]],
-    }],
-    [blist, 1.3.6, {
-        source_urls: ["https://pypi.python.org/packages/source/b/blist/"],
-    }],
-    [mpi4py, 1.3.1, {
-        source_urls: ["http://bitbucket.org/mpi4py/mpi4py/downloads/"],
-    }],
-    [paycheck, 1.0.2, {
-        source_urls: ["https://pypi.python.org/packages/source/p/paycheck/"],
-    }],
-    [argparse, 1.3.0, {
-        source_urls: ["https://pypi.python.org/packages/source/a/argparse/"],
-    }],
-    [pbr, 1.0.1, {
-        source_urls: ["https://pypi.python.org/packages/source/p/pbr/"],
-    }],
-    [lockfile, 0.10.2, {
-        source_urls: ["https://pypi.python.org/packages/source/l/lockfile/"],
-    }],
-    [Cython, '0.22', {
-        source_urls: ["http://www.cython.org/release/"],
-    }],
-    [six, 1.9.0, {
-        source_urls: ["https://pypi.python.org/packages/source/s/six/"],
-    }],
-    [dateutil, 2.4.2, {
-        source_tmpl: python-%(name)s-%(version)s.tar.gz,
-        source_urls: ["https://pypi.python.org/packages/source/p/python-dateutil/"],
-    }],
-    [deap, 1.0.2, {
-        source_tmpl: "%(name)s-%(version)s.post2.tar.gz",
-        source_urls: ["https://pypi.python.org/packages/source/d/deap/"],
-    }],
-    [decorator, 3.4.2, {
-        source_urls: ["https://pypi.python.org/packages/source/d/decorator/"],
-    }],
-    [arff, 2.0.2, {
-        source_tmpl: liac-%(name)s-%(version)s.zip,
-        source_urls: ["https://pypi.python.org/packages/source/l/liac-arff/"],
-    }],
-    [pycrypto, 2.6.1, {
-        modulename: Crypto,
-        source_urls: ["http://ftp.dlitz.net/pub/dlitz/crypto/pycrypto/"],
-    }],
-    [ecdsa, '0.13', {
-        source_urls: ["https://pypi.python.org/packages/source/e/ecdsa/"],
-    }],
-    [paramiko, 1.15.2, {
-        source_urls: ["https://pypi.python.org/packages/source/p/paramiko/"],
-    }],
-    [pyparsing, 2.0.3, {
-        source_urls: ["https://pypi.python.org/packages/source/p/pyparsing/"],
-    }],
-    [netifaces, 0.10.4, {
-        source_urls: ["https://pypi.python.org/packages/source/n/netifaces"],
-    }],
-    [netaddr, 0.7.14, {
-        source_urls: ["https://pypi.python.org/packages/source/n/netaddr"],
-    }],
-    [mock, 1.0.1, {
-        source_urls: ["https://pypi.python.org/packages/source/m/mock"],
-    }],
-    [pytz, '2015.4', {
-        source_urls: ["https://pypi.python.org/packages/source/p/pytz"],
-    }],
-    [pandas, 0.16.1, {
-        source_urls: ["https://pypi.python.org/packages/source/p/pandas"],
-    }],
-]
-
-moduleclass: lang
-
diff --git a/test/framework/easyconfigs/yeb/SQLite-3.8.10.2-foss-2018a.yeb b/test/framework/easyconfigs/yeb/SQLite-3.8.10.2-foss-2018a.yeb
deleted file mode 100644
index a9d0afea39..0000000000
--- a/test/framework/easyconfigs/yeb/SQLite-3.8.10.2-foss-2018a.yeb
+++ /dev/null
@@ -1,32 +0,0 @@
-_internal_variables_:
-    - &versionstr 3081002
-
-easyblock: ConfigureMake
-
-name: SQLite
-version: 3.8.10.2
-
-homepage: http://www.sqlite.org/
-# quotes on description to escape special character :
-description: "SQLite: SQL Database Engine in a C Library"
-
-toolchain: foss, 2018a
-
-# eg. http://www.sqlite.org/2014/sqlite-autoconf-3080600.tar.gz
-source_urls: ["http://www.sqlite.org/2015/"]
-sources: [!join [sqlite-autoconf-, *versionstr, .tar.gz]]
-
-# commented out for testing to avoid having to add them all - dependencies are tested in other files
-dependencies: [
-#    [libreadline, '6.3'],
-#    [Tcl, 8.6.4],
-]
-
-parallel: 1
-
-sanity_check_paths: {
-    files: [bin/sqlite3, include/sqlite3ext.h, include/sqlite3.h, lib/libsqlite3.a, lib/libsqlite3.so],
-    dirs: [lib/pkgconfig],
-}
-
-moduleclass: devel
diff --git a/test/framework/easyconfigs/yeb/bzip-bad-toolchain.yeb b/test/framework/easyconfigs/yeb/bzip-bad-toolchain.yeb
deleted file mode 100644
index f9c0f7f074..0000000000
--- a/test/framework/easyconfigs/yeb/bzip-bad-toolchain.yeb
+++ /dev/null
@@ -1,26 +0,0 @@
-%YAML 1.2
----
-# not really (there's an EB_bzip2 easyblock), but fine for use in unit tests
-easyblock: ConfigureMake
-
-name: bzip2
-version: 1.0.6
-
-homepage: 'http://www.bzip.org/'
-# preserve newlines using '|' to ensure match with description from .eb easyconfig
-description: |
-    bzip2 is a freely available, patent free, high-quality data compressor. It typically
-    compresses files to within 10% to 15% of the best available techniques (the PPM family of statistical
-    compressors), whilst being around twice as fast at compression and six times faster at decompression.
-
-# bad toolchain with four parameters
-toolchain: GCC, 4.9, False, 2
-toolchainopts: {pic: True}
-
-sources:
-    # SOURCE_TAR_GZ is a known constant, hence the *
-    - *SOURCE_TAR_GZ
-source_urls:
-    - http://www.bzip.org/%(version)s
-
-moduleclass: tools
diff --git a/test/framework/easyconfigs/yeb/bzip2-1.0.6-GCC-4.9.2.yeb b/test/framework/easyconfigs/yeb/bzip2-1.0.6-GCC-4.9.2.yeb
deleted file mode 100644
index a2fd43d756..0000000000
--- a/test/framework/easyconfigs/yeb/bzip2-1.0.6-GCC-4.9.2.yeb
+++ /dev/null
@@ -1,28 +0,0 @@
-%YAML 1.2
----
-# not really (there's an EB_bzip2 easyblock), but fine for use in unit tests
-easyblock: ConfigureMake
-
-name: bzip2
-version: 1.0.6
-
-homepage: 'http://www.bzip.org/'
-# preserve newlines using '|' to ensure match with description from .eb easyconfig
-description: |
-    bzip2 is a freely available, patent free, high-quality data compressor. It typically
-    compresses files to within 10% to 15% of the best available techniques (the PPM family of statistical
-    compressors), whilst being around twice as fast at compression and six times faster at decompression.
-
-toolchain: [GCC, 4.9.2]
-toolchainopts: {pic: True}
-
-sources:
-    # SOURCE_TAR_GZ is a known constant, hence the *
-    - *SOURCE_TAR_GZ
-source_urls:
-    - http://www.bzip.org/%(version)s
-
-builddependencies:
-    - gzip: 1.6
-
-moduleclass: tools
diff --git a/test/framework/easyconfigs/yeb/foss-2018a.yeb b/test/framework/easyconfigs/yeb/foss-2018a.yeb
deleted file mode 100644
index 99de832ac9..0000000000
--- a/test/framework/easyconfigs/yeb/foss-2018a.yeb
+++ /dev/null
@@ -1,42 +0,0 @@
-_internal_variables_:
-    - &version 2018a
-
-    - &comp_name GCC
-    - &comp_version 6.4.0-2.28
-    - &comp [*comp_name, *comp_version]
-
-    - &blaslib OpenBLAS
-    - &blasver 0.2.20
-    - &blas !join [*blaslib, -, *blasver]
-
-    - &comp_mpi_tc [gompi, *version]
-
-
-easyblock: Toolchain
-
-name: foss 
-version: *version
-
-homepage: (none)
-description: |
-    GNU Compiler Collection (GCC) based compiler toolchain, including
-    OpenMPI for MPI support, OpenBLAS (BLAS and LAPACK support), FFTW and ScaLAPACK.
-
-toolchain: {name: system, version: system}
-
-# compiler toolchain dependencies
-# we need GCC and OpenMPI as explicit dependencies instead of gompi toolchain
-# because of toolchain preperation functions
-dependencies:
-    - *comp_name: *comp_version
-    - OpenMPI: 2.1.2
-      toolchain: *comp
-    - *blaslib: *blasver
-      toolchain: *comp
-    - FFTW: 3.3.7
-      toolchain: *comp_mpi_tc
-    - ScaLAPACK: 2.0.2
-      versionsuffix: !join [-, *blas]
-      toolchain: *comp_mpi_tc
-
-moduleclass: toolchain
diff --git a/test/framework/easyconfigs/yeb/gzip-1.6-GCC-4.9.2.yeb b/test/framework/easyconfigs/yeb/gzip-1.6-GCC-4.9.2.yeb
deleted file mode 100644
index da64d1518d..0000000000
--- a/test/framework/easyconfigs/yeb/gzip-1.6-GCC-4.9.2.yeb
+++ /dev/null
@@ -1,25 +0,0 @@
-%YAML 1.2
----
-easyblock: ConfigureMake
-
-name: gzip
-version: 1.6
-
-homepage: 'http://www.gnu.org/software/gzip/'
-description:
-    gzip (GNU zip) is a popular data compression program
-    as a replacement for compress
-
-toolchain: {name: GCC, version: 4.9.2}
-
-# http://ftp.gnu.org/gnu/gzip/gzip-1.6.tar.gz
-source_urls: [*GNU_SOURCE]
-sources: ['%(name)s-%(version)s.tar.gz']
-
-# make sure the gzip, gunzip and compress binaries are available after installation
-sanity_check_paths: {
-    files: [bin/gunzip, bin/gzip, bin/uncompress],
-    dirs: [],
-}
-
-moduleclass: tools
diff --git a/test/framework/easyconfigs/yeb/intel-2018a.yeb b/test/framework/easyconfigs/yeb/intel-2018a.yeb
deleted file mode 100644
index c1ec0daf29..0000000000
--- a/test/framework/easyconfigs/yeb/intel-2018a.yeb
+++ /dev/null
@@ -1,24 +0,0 @@
-_internal_variables_:
-    - &compver 2018.1.163
-
-easyblock: Toolchain
-
-name: intel 
-version: 2018a
-
-homepage: http://software.intel.com/en-us/intel-cluster-toolkit-compiler/
-description:
-    Intel Cluster Toolkit Compiler Edition provides Intel C/C++ and Fortran compilers,
-    Intel MPI & Intel MKL.
-
-toolchain: {name: system, version: system}
-
-# fake intel toolchain easyconfig, no dependencies (good enough for testing)
-dependencies: [
-    # [icc, *compver],
-    # [ifort, *compver],
-    # [impi, 2018.1.163],
-    # [imkl, 2018.1.163]
-]
-
-moduleclass: toolchain
diff --git a/test/framework/easyconfigs/yeb/toy-0.0.yeb b/test/framework/easyconfigs/yeb/toy-0.0.yeb
deleted file mode 100644
index 2f5265ea6d..0000000000
--- a/test/framework/easyconfigs/yeb/toy-0.0.yeb
+++ /dev/null
@@ -1,38 +0,0 @@
-%YAML 1.2
----
-
-name: toy
-version: 0.0
-
-homepage: 'https://easybuilders.github.io/easybuild'
-description: "Toy C program, 100% toy."
-
-toolchain: system, system
-
-sources: 
-    - *SOURCE_TAR_GZ
-
-checksums: [[
-    'be662daa971a640e40be5c804d9d7d10',  # default [MD5]
-    '44332000aa33b99ad1e00cbd1a7da769220d74647060a10e807b916d73ea27bc',  # default (SHA256)
-    ['adler32', '0x998410035'],
-    ['crc32', '0x1553842328'],
-    ['md5', 'be662daa971a640e40be5c804d9d7d10'],
-    ['sha1', 'f618096c52244539d0e89867405f573fdb0b55b0'],
-    ['size', 273],
-]]
-
-patches: [
-    'toy-0.0_fix-silly-typo-in-printf-statement.patch',
-    ['toy-extra.txt', 'toy-0.0'],
-]
-
-sanity_check_paths: {
-    files: [['bin/yot', 'bin/toy']],
-    dirs: ['bin'],
-}
-
-postinstallcmds: ["echo TOY > %(installdir)s/README"]
-
-moduleclass: tools
-# trailing comment, leave this here, it may trigger bugs with extract_comments()
diff --git a/test/framework/repository.py b/test/framework/repository.py
index aa1cf402b7..97d3ead259 100644
--- a/test/framework/repository.py
+++ b/test/framework/repository.py
@@ -35,7 +35,6 @@
 from test.framework.utilities import EnhancedTestCase, TestLoaderFiltered
 from unittest import TextTestRunner
 
-import easybuild.tools.build_log
 from easybuild.framework.easyconfig.parser import EasyConfigParser
 from easybuild.tools.build_log import EasyBuildError
 from easybuild.tools.filetools import read_file
@@ -185,23 +184,6 @@ def check_ec(path, expected_buildstats):
         path = repo.add_easyconfig(toy_eb_file, 'test', '1.0', {'time': 1.23, 'size': 123}, [{'time': 0.9, 'size': 2}])
         check_ec(path, [{'time': 0.9, 'size': 2}, {'time': 1.23, 'size': 123}])
 
-        orig_experimental = easybuild.tools.build_log.EXPERIMENTAL
-        easybuild.tools.build_log.EXPERIMENTAL = True
-
-        if 'yaml' in sys.modules:
-            toy_yeb_file = os.path.join(test_easyconfigs, 'yeb', 'toy-0.0.yeb')
-            path = repo.add_easyconfig(toy_yeb_file, 'test', '1.0', {'time': 1.23}, None)
-            check_ec(path, [{'time': 1.23}])
-
-            stats1 = {'time': 1.23, 'size': 123}
-            stats2 = [{'time': 0.9, 'size': 2}]
-            path = repo.add_easyconfig(toy_yeb_file, 'test', '1.0', stats1, stats2)
-            check_ec(path, stats2 + [stats1])
-
-            easybuild.tools.build_log.EXPERIMENTAL = orig_experimental
-        else:
-            print("Skipping .yeb part of test_add_easyconfig (no PyYAML available)")
-
     def tearDown(self):
         """Clean up after test."""
         super(RepositoryTest, self).tearDown()
diff --git a/test/framework/suite.py b/test/framework/suite.py
index 6a40e35754..e109848340 100755
--- a/test/framework/suite.py
+++ b/test/framework/suite.py
@@ -81,7 +81,6 @@
 import test.framework.tweak as tw
 import test.framework.utilities_test as u
 import test.framework.variables as v
-import test.framework.yeb as y
 
 # set plain text key ring to be used,
 # so a GitHub token stored in it can be obtained without having to provide a password
@@ -121,7 +120,7 @@
 # call suite() for each module and then run them all
 # note: make sure the options unit tests run first, to avoid running some of them with a readily initialized config
 tests = [gen, d, bl, o, r, ef, ev, ebco, ep, e, mg, m, mt, f, run, a, robot, b, v, g, tcv, tc, t, c, s, lic, f_c,
-         tw, p, i, pkg, env, et, y, st, h, ct, lib, u, es, ou]
+         tw, p, i, pkg, env, et, st, h, ct, lib, u, es, ou]
 
 SUITE = unittest.TestSuite([x.suite() for x in tests])
 res = unittest.TextTestRunner().run(SUITE)
diff --git a/test/framework/toy_build.py b/test/framework/toy_build.py
index 9d4fdf5de5..be1421ec85 100644
--- a/test/framework/toy_build.py
+++ b/test/framework/toy_build.py
@@ -2562,20 +2562,15 @@ def test_toy_build_enhanced_sanity_check(self):
         del sys.modules['easybuild.easyblocks.toy']
 
     def test_toy_dumped_easyconfig(self):
-        """ Test dumping of file in eb_filerepo in both .eb and .yeb format """
+        """ Test dumping of file in eb_filerepo in both .eb format """
         filename = 'toy-0.0'
         test_ecs_dir = os.path.join(os.path.abspath(os.path.dirname(__file__)), 'easyconfigs')
         paths = [
             os.path.join(test_ecs_dir, 'test_ecs', 't', 'toy', '%s.eb' % filename),
-            os.path.join(test_ecs_dir, 'yeb', '%s.yeb' % filename),
         ]
 
         for path in paths:
 
-            if path.endswith('.yeb') and 'yaml' not in sys.modules:
-                print("Skipping .yeb part of test_toy_dumped_easyconfig (no PyYAML available)")
-                continue
-
             args = [
                 path,
                 '--experimental',
diff --git a/test/framework/yeb.py b/test/framework/yeb.py
deleted file mode 100644
index 74a2a47875..0000000000
--- a/test/framework/yeb.py
+++ /dev/null
@@ -1,214 +0,0 @@
-# #
-# Copyright 2015-2023 Ghent University
-#
-# This file is part of EasyBuild,
-# originally created by the HPC team of Ghent University (http://ugent.be/hpc/en),
-# with support of Ghent University (http://ugent.be/hpc),
-# the Flemish Supercomputer Centre (VSC) (https://www.vscentrum.be),
-# Flemish Research Foundation (FWO) (http://www.fwo.be/en)
-# and the Department of Economy, Science and Innovation (EWI) (http://www.ewi-vlaanderen.be/en).
-#
-# https://github.com/easybuilders/easybuild
-#
-# EasyBuild is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation v2.
-#
-# EasyBuild is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with EasyBuild.  If not, see <http://www.gnu.org/licenses/>.
-# #
-"""
-Unit tests for .yeb easyconfig format
-
-@author: Caroline De Brouwer (Ghent University)
-@author: Kenneth Hoste (Ghent University)
-"""
-import glob
-import os
-import platform
-import sys
-from test.framework.utilities import EnhancedTestCase, TestLoaderFiltered, init_config
-from unittest import TextTestRunner
-
-import easybuild.tools.build_log
-from easybuild.framework.easyconfig.easyconfig import EasyConfig
-from easybuild.framework.easyconfig.format.yeb import is_yeb_format
-from easybuild.tools import LooseVersion
-from easybuild.tools.build_log import EasyBuildError
-from easybuild.tools.config import module_classes
-from easybuild.tools.filetools import read_file
-
-
-try:
-    import yaml
-except ImportError:
-    pass
-
-
-class YebTest(EnhancedTestCase):
-    """ Testcase for run module """
-
-    def setUp(self):
-        """Test setup."""
-        super(YebTest, self).setUp()
-        self.orig_experimental = easybuild.tools.build_log.EXPERIMENTAL
-        easybuild.tools.build_log.EXPERIMENTAL = True
-
-    def tearDown(self):
-        """Test cleanup."""
-        super(YebTest, self).tearDown()
-        easybuild.tools.build_log.EXPERIMENTAL = self.orig_experimental
-
-    def test_parse_yeb(self):
-        """Test parsing of .yeb easyconfigs."""
-        if 'yaml' not in sys.modules:
-            print("Skipping test_parse_yeb (no PyYAML available)")
-            return
-
-        build_options = {
-            'check_osdeps': False,
-            'external_modules_metadata': {},
-            'silent': True,
-            'valid_module_classes': module_classes(),
-        }
-        init_config(build_options=build_options)
-        easybuild.tools.build_log.EXPERIMENTAL = True
-
-        testdir = os.path.dirname(os.path.abspath(__file__))
-        test_easyconfigs = os.path.join(testdir, 'easyconfigs')
-        test_yeb_easyconfigs = os.path.join(testdir, 'easyconfigs', 'yeb')
-
-        # test parsing
-        test_files = [
-            'bzip2-1.0.6-GCC-4.9.2',
-            'gzip-1.6-GCC-4.9.2',
-            'foss-2018a',
-            'intel-2018a',
-            'SQLite-3.8.10.2-foss-2018a',
-            'Python-2.7.10-intel-2018a',
-            'CrayCCE-5.1.29',
-            'toy-0.0',
-        ]
-
-        for filename in test_files:
-            ec_yeb = EasyConfig(os.path.join(test_yeb_easyconfigs, '%s.yeb' % filename))
-            # compare with parsed result of .eb easyconfig
-            ec_file = glob.glob(os.path.join(test_easyconfigs, 'test_ecs', '*', '*', '%s.eb' % filename))[0]
-            ec_eb = EasyConfig(ec_file)
-
-            for key in sorted(ec_yeb.asdict()):
-                eb_val = ec_eb[key]
-                yeb_val = ec_yeb[key]
-                if key == 'description':
-                    # multi-line string is always terminated with '\n' in YAML, so strip it off
-                    yeb_val = yeb_val.strip()
-
-                self.assertEqual(yeb_val, eb_val)
-
-    def test_yeb_get_config_obj(self):
-        """Test get_config_dict method."""
-        testdir = os.path.dirname(os.path.abspath(__file__))
-        test_yeb_easyconfigs = os.path.join(testdir, 'easyconfigs', 'yeb')
-        ec = EasyConfig(os.path.join(test_yeb_easyconfigs, 'toy-0.0.yeb'))
-        ecdict = ec.parser.get_config_dict()
-
-        # changes to this dict should not affect the return value of the next call to get_config_dict
-        fn = 'test.tar.gz'
-        ecdict['sources'].append(fn)
-
-        ecdict_bis = ec.parser.get_config_dict()
-        self.assertIn(fn, ecdict['sources'])
-        self.assertNotIn(fn, ecdict_bis['sources'])
-
-    def test_is_yeb_format(self):
-        """ Test is_yeb_format function """
-        testdir = os.path.dirname(os.path.abspath(__file__))
-        test_yeb = os.path.join(testdir, 'easyconfigs', 'yeb', 'bzip2-1.0.6-GCC-4.9.2.yeb')
-        raw_yeb = read_file(test_yeb)
-
-        self.assertTrue(is_yeb_format(test_yeb, None))
-        self.assertTrue(is_yeb_format(None, raw_yeb))
-
-        test_eb = os.path.join(testdir, 'easyconfigs', 'test_ecs', 'g', 'gzip', 'gzip-1.4.eb')
-        raw_eb = read_file(test_eb)
-
-        self.assertFalse(is_yeb_format(test_eb, None))
-        self.assertFalse(is_yeb_format(None, raw_eb))
-
-    def test_join(self):
-        """ Test yaml_join function """
-        # skip test if yaml module was not loaded
-        if 'yaml' not in sys.modules:
-            print("Skipping test_join (no PyYAML available)")
-            return
-
-        stream = [
-            "variables:",
-            "   - &f foo",
-            "   - &b bar",
-            "",
-            "fb1: !join [foo, bar]",
-            "fb2: !join [*f, bar]",
-            "fb3: !join [*f, *b]",
-        ]
-
-        # import here for testing yaml_join separately
-        from easybuild.framework.easyconfig.format.yeb import yaml_join  # noqa
-        if LooseVersion(platform.python_version()) < LooseVersion(u'2.7'):
-            loaded = yaml.load('\n'.join(stream))
-        else:
-            loaded = yaml.load(u'\n'.join(stream), Loader=yaml.SafeLoader)
-        for key in ['fb1', 'fb2', 'fb3']:
-            self.assertEqual(loaded.get(key), 'foobar')
-
-    def test_bad_toolchain_format(self):
-        """ Test alternate toolchain format name,version """
-        if 'yaml' not in sys.modules:
-            print("Skipping test_parse_yeb (no PyYAML available)")
-            return
-
-        # only test bad cases - the right ones are tested with the test files in test_parse_yeb
-        testdir = os.path.dirname(os.path.abspath(__file__))
-        test_easyconfigs = os.path.join(testdir, 'easyconfigs', 'yeb')
-        expected = r'Can not convert list .* to toolchain dict. Expected 2 or 3 elements'
-        self.assertErrorRegex(EasyBuildError, expected, EasyConfig,
-                              os.path.join(test_easyconfigs, 'bzip-bad-toolchain.yeb'))
-
-    def test_external_module_toolchain(self):
-        """Test specifying external (build) dependencies in yaml format."""
-        if 'yaml' not in sys.modules:
-            print("Skipping test_external_module_toolchain (no PyYAML available)")
-            return
-
-        ecpath = os.path.join(os.path.dirname(__file__), 'easyconfigs', 'yeb', 'CrayCCE-5.1.29.yeb')
-        metadata = {
-            'name': ['foo', 'bar'],
-            'version': ['1.2.3', '3.2.1'],
-            'prefix': '/foo/bar',
-        }
-        build_options = {
-            'external_modules_metadata': {'fftw/3.3.4.0': metadata},
-            'valid_module_classes': module_classes(),
-        }
-        init_config(build_options=build_options)
-        easybuild.tools.build_log.EXPERIMENTAL = True
-
-        ec = EasyConfig(ecpath)
-
-        self.assertEqual(ec.dependencies()[1]['full_mod_name'], 'fftw/3.3.4.0')
-        self.assertEqual(ec.dependencies()[1]['external_module_metadata'], metadata)
-
-
-def suite():
-    """ returns all the testcases in this module """
-    return TestLoaderFiltered().loadTestsFromTestCase(YebTest, sys.argv[1:])
-
-
-if __name__ == '__main__':
-    res = TextTestRunner(verbosity=1).run(suite())
-    sys.exit(len(res.failures))