diff --git a/easybuild/easyconfigs/b/bzip2/bzip2-1.0.8-GCCcore-15.2.0.eb b/easybuild/easyconfigs/b/bzip2/bzip2-1.0.8-GCCcore-15.2.0.eb
new file mode 100644
index 000000000000..deff53ffa836
--- /dev/null
+++ b/easybuild/easyconfigs/b/bzip2/bzip2-1.0.8-GCCcore-15.2.0.eb
@@ -0,0 +1,27 @@
+name = 'bzip2'
+version = '1.0.8'
+
+homepage = 'https://sourceware.org/bzip2'
+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 = {'name': 'GCCcore', 'version': '15.2.0'}
+toolchainopts = {'pic': True}
+
+source_urls = ['https://sourceware.org/pub/%(name)s/']
+sources = [SOURCE_TAR_GZ]
+patches = ['bzip2-%(version)s-pkgconfig.patch']
+checksums = [
+    'ab5a03176ee106d3f0fa90e381da478ddae405918153cca248e682cd0c4a2269',  # bzip2-1.0.8.tar.gz
+    '9299e8ee4d014ea973777b6ea90661fe329dfa991f822add4c763ea9ddb9aab1',  # bzip2-1.0.8-pkgconfig.patch
+]
+
+builddependencies = [
+    ('binutils', '2.45'),
+]
+
+moduleclass = 'tools'
diff --git a/easybuild/easyconfigs/n/ncurses/ncurses-6.6-GCCcore-15.2.0.eb b/easybuild/easyconfigs/n/ncurses/ncurses-6.6-GCCcore-15.2.0.eb
new file mode 100644
index 000000000000..90882db31f0c
--- /dev/null
+++ b/easybuild/easyconfigs/n/ncurses/ncurses-6.6-GCCcore-15.2.0.eb
@@ -0,0 +1,55 @@
+easyblock = 'ConfigureMake'
+
+name = 'ncurses'
+version = '6.6'
+
+homepage = 'https://www.gnu.org/software/ncurses/'
+description = """
+ The Ncurses (new curses) library is a free software emulation of curses in
+ System V Release 4.0, and more. It uses Terminfo format, supports pads and
+ color and multiple highlights and forms characters and function-key mapping,
+ and has all the other SYSV-curses enhancements over BSD Curses.
+"""
+
+toolchain = {'name': 'GCCcore', 'version': '15.2.0'}
+toolchainopts = {'pic': True}
+
+source_urls = [GNU_SOURCE]
+sources = [SOURCE_TAR_GZ]
+checksums = ['355b4cbbed880b0381a04c46617b7656e362585d52e9cf84a67e2009b749ff11']
+
+builddependencies = [
+    ('binutils', '2.45'),
+    ('pkgconf', '2.5.1'),
+]
+
+# Avoid ncurses trying to write to system paths if TERMINFO is set
+preconfigopts = "unset TERMINFO && "
+local_common_configopts = "--with-shared --enable-overwrite --without-ada --enable-symlinks --with-versioned-syms "
+local_common_configopts += "--enable-pc-files --with-pkg-config-libdir=%(installdir)s/lib/pkgconfig "
+configopts = [
+    # build ncurses: serial build in default paths with shared libraries
+    local_common_configopts + "--disable-widec",
+    # build ncursesw: serial with UTF-8
+    local_common_configopts + "--enable-ext-colors --enable-widec --includedir=%(installdir)s/include/ncursesw/",
+]
+
+# Symlink libtinfo to libncurses
+# libncurses with this configopts has all the symbols from libtinfo, but some packages look for libtinfo specifically
+postinstallcmds = ['cd %(installdir)s/lib && for l in libncurses{.,_,w}*; do ln -s "${l}" "${l/ncurses/tinfo}"; done']
+
+_target_suffix = ['', 'w']  # '': ncurses, 'w': ncursesw
+_lib_suffix = ['%s%s' % (x, y) for x in _target_suffix for y in ['.a', '_g.a', '.' + SHLIB_EXT]]
+_lib_names = ['form', 'menu', 'ncurses', 'panel', 'tinfo']
+_pc_names = ['form', 'menu', 'ncurses++', 'ncurses', 'panel']
+
+sanity_check_paths = {
+    'files': ['bin/%s' % x for x in ["captoinfo", "clear", "infocmp", "infotocap", "ncurses%(version_major)s-config",
+                                     "reset", "tabs", "tic", "toe", "tput", "tset"]] +
+             ['lib/lib%s%s' % (x, y) for x in _lib_names for y in _lib_suffix] +
+             ['lib/libncurses++%s.a' % x for x in _target_suffix] +
+             ['lib/pkgconfig/%s%s.pc' % (x, y) for x in _pc_names for y in _target_suffix],
+    'dirs': ['include', 'include/ncursesw'],
+}
+
+moduleclass = 'devel'
diff --git a/easybuild/easyconfigs/p/pkgconf/pkgconf-2.5.1-GCCcore-15.2.0.eb b/easybuild/easyconfigs/p/pkgconf/pkgconf-2.5.1-GCCcore-15.2.0.eb
new file mode 100644
index 000000000000..4e02c9a72c9f
--- /dev/null
+++ b/easybuild/easyconfigs/p/pkgconf/pkgconf-2.5.1-GCCcore-15.2.0.eb
@@ -0,0 +1,38 @@
+easyblock = 'ConfigureMake'
+
+name = 'pkgconf'
+version = '2.5.1'
+
+homepage = 'https://github.com/pkgconf/pkgconf'
+
+description = """pkgconf is a program which helps to configure compiler and linker flags for development libraries.
+ It is similar to pkg-config from freedesktop.org."""
+
+toolchain = {'name': 'GCCcore', 'version': '15.2.0'}
+
+source_urls = ['https://github.com/pkgconf/pkgconf/archive/refs/tags/']
+sources = [SOURCE_TAR_GZ]
+checksums = ['79721badcad1987dead9c3609eb4877ab9b58821c06bdacb824f2c8897c11f2a']
+
+builddependencies = [
+    ('binutils', '2.45'),
+    ('Autotools', '20250626'),
+]
+
+preconfigopts = './autogen.sh && '
+
+postinstallcmds = ["cd %(installdir)s/bin && ln -s pkgconf pkg-config"]
+
+sanity_check_paths = {
+    'files': ['bin/pkg-config', 'bin/pkgconf'],
+    'dirs': [],
+}
+
+sanity_check_commands = [
+    "pkg-config --help",
+    "pkgconf --help",
+]
+
+modextravars = {'PKG_CONFIG': '%(installdir)s/bin/pkgconf'}
+
+moduleclass = 'devel'
diff --git a/easybuild/easyconfigs/u/UnZip/UnZip-6.0-GCCcore-15.2.0.eb b/easybuild/easyconfigs/u/UnZip/UnZip-6.0-GCCcore-15.2.0.eb
new file mode 100644
index 000000000000..ec7c1159cd46
--- /dev/null
+++ b/easybuild/easyconfigs/u/UnZip/UnZip-6.0-GCCcore-15.2.0.eb
@@ -0,0 +1,60 @@
+easyblock = 'ConfigureMake'
+
+name = 'UnZip'
+version = '6.0'
+
+homepage = 'http://www.info-zip.org/UnZip.html'
+description = """UnZip is an extraction utility for archives compressed
+in .zip format (also called "zipfiles"). Although highly compatible both
+with PKWARE's PKZIP and PKUNZIP utilities for MS-DOS and with Info-ZIP's
+own Zip program, our primary objectives have been portability and
+non-MSDOS functionality."""
+
+toolchain = {'name': 'GCCcore', 'version': '15.2.0'}
+toolchainopts = {'cstd': 'gnu89'}
+
+source_urls = ['https://download.sourceforge.net/infozip']
+sources = ['%(namelower)s%(version_major)s%(version_minor)s.tar.gz']
+patches = [
+    'UnZip-%(version)s_various-security-and-other-fixes-from-Ubuntu.patch',
+]
+checksums = [
+    '036d96991646d0449ed0aa952e4fbe21b476ce994abc276e49d30e686708bd37',  # unzip60.tar.gz
+    # UnZip-6.0_various-security-and-other-fixes-from-Ubuntu.patch
+    '06b9307fd5aa018896bd4126818c00c1fd284a06cc3681cf0492f951ebb57ffe',
+]
+
+builddependencies = [
+    ('binutils', '2.45'),
+]
+
+dependencies = [
+    ('bzip2', '1.0.8'),
+]
+
+skipsteps = ['configure']
+
+local_cf = ['$CFLAGS', '$CPPFLAGS', '-I.', '-DACORN_FTYPE_NFS', '-DWILD_STOP_AT_DIR', '-DLARGE_FILE_SUPPORT'
+            '-DUNICODE_SUPPORT', '-DUNICODE_WCHAR', '-DUTF8_MAYBE_NATIVE', '-DNO_LCHMOD', '-DDATE_FORMAT=DF_YMD',
+            '-DUSE_BZIP2', '-DIZ_HAVE_UXUIDGID', '-DNOMEMCPY', '-DNO_WORKING_ISPRINT']
+
+buildopts = ' '.join([
+    "-f unix/Makefile",
+    'CC="$CC"',
+    'D_USE_BZ2=-DUSE_BZIP2',
+    'L_BZ2=-lbz2',
+    'LF2="$LDFLAGS"',
+    'CF="%s"' % ' '.join(local_cf),
+    'unzips',
+])
+
+installopts = '-f unix/Makefile prefix=%(installdir)s '
+
+sanity_check_paths = {
+    'files': ['bin/unzip', 'bin/zipinfo'],
+    'dirs': ['man/man1']
+}
+
+sanity_check_commands = ["unzip -v"]
+
+moduleclass = 'tools'