diff --git a/packages/dpkg/build.sh b/packages/dpkg/build.sh
index e66a59bbb00a46..777bb133512313 100644
--- a/packages/dpkg/build.sh
+++ b/packages/dpkg/build.sh
@@ -3,7 +3,7 @@ TERMUX_PKG_DESCRIPTION="Debian package management system"
 TERMUX_PKG_LICENSE="GPL-2.0"
 TERMUX_PKG_MAINTAINER="@termux"
 TERMUX_PKG_VERSION="1.22.6"
-TERMUX_PKG_REVISION=4
+TERMUX_PKG_REVISION=5
 # old tarball are removed in https://mirrors.kernel.org/debian/pool/main/d/dpkg/dpkg_${TERMUX_PKG_VERSION}.tar.xz
 TERMUX_PKG_SRCURL=git+https://salsa.debian.org/dpkg-team/dpkg.git
 TERMUX_PKG_GIT_BRANCH="${TERMUX_PKG_VERSION}"
diff --git a/packages/dpkg/dpkg-perl.subpackage.sh b/packages/dpkg/dpkg-perl.subpackage.sh
index 620e96cf03ec2a..609bff9637db1c 100644
--- a/packages/dpkg/dpkg-perl.subpackage.sh
+++ b/packages/dpkg/dpkg-perl.subpackage.sh
@@ -8,8 +8,10 @@ termux_step_create_subpkg_debscripts() {
 	#!$TERMUX_PREFIX/bin/bash
 	set -e
 
+	export PERL_MM_USE_DEFAULT=1
+
 	echo "Sideloading Perl Locale::gettext ..."
-	cpan -fi Locale::gettext
+	cpan -Ti Locale::gettext
 
 	exit 0
 	POSTINST_EOF
diff --git a/packages/intltool/build.sh b/packages/intltool/build.sh
index 618d9d2cf53d4e..4a580d3134acbf 100644
--- a/packages/intltool/build.sh
+++ b/packages/intltool/build.sh
@@ -3,7 +3,7 @@ TERMUX_PKG_DESCRIPTION="The internationalization tool collection"
 TERMUX_PKG_MAINTAINER="@suhan-paradkar"
 TERMUX_PKG_LICENSE="GPL-2.0"
 TERMUX_PKG_VERSION=0.51.0
-TERMUX_PKG_REVISION=3
+TERMUX_PKG_REVISION=4
 TERMUX_PKG_SRCURL=https://launchpad.net/intltool/trunk/$TERMUX_PKG_VERSION/+download/intltool-$TERMUX_PKG_VERSION.tar.gz
 TERMUX_PKG_SHA256=67c74d94196b153b774ab9f89b2fa6c6ba79352407037c8c14d5aeb334e959cd
 TERMUX_PKG_DEPENDS="perl, clang, make, libexpat"
@@ -14,8 +14,10 @@ termux_step_create_debscripts()  {
 	#!$TERMUX_PREFIX/bin/bash
 	set -e
 
+	export PERL_MM_USE_DEFAULT=1
+
 	echo "Sideloading Perl XML::Parser..."
-	cpan install XML::Parser
+	cpan -Ti XML::Parser
 
 	exit 0
 	POSTINST_EOF
diff --git a/packages/perl/build.sh b/packages/perl/build.sh
index 88cecf53785dbf..07cf85b9c03b5b 100644
--- a/packages/perl/build.sh
+++ b/packages/perl/build.sh
@@ -11,7 +11,7 @@ TERMUX_PKG_MAINTAINER="@termux"
 # - subversion
 TERMUX_PKG_VERSION=(5.40.3
                     1.6.2)
-TERMUX_PKG_REVISION=1
+TERMUX_PKG_REVISION=2
 TERMUX_PKG_SHA256=(65f63b4763ab6cb9bb3d5731dd10369e1705be3c59be9847d453eb60b349ab43
                    f74ab2a6cacc574c98398ae9d36660b4cc0ba0e3d34e87b24d27b9cd2a27787d)
 TERMUX_PKG_SRCURL=(https://www.cpan.org/src/5.0/perl-${TERMUX_PKG_VERSION[0]}.tar.xz
diff --git a/packages/perl/cpan-force-auto-local-lib.patch b/packages/perl/cpan-force-auto-local-lib.patch
new file mode 100644
index 00000000000000..5269c641488c2a
--- /dev/null
+++ b/packages/perl/cpan-force-auto-local-lib.patch
@@ -0,0 +1,10 @@
+--- a/cpan/CPAN/lib/CPAN/FirstTime.pm
++++ b/cpan/CPAN/lib/CPAN/FirstTime.pm
+@@ -904,7 +904,6 @@ sub init {
+     unless ( $matcher
+         || _can_write_to_libdirs() || _using_installbase() || _using_sudo()
+     ) {
+-        local $auto_config = 0; # We *must* ask, even under autoconfig
+         local *_real_prompt;    # We *must* show prompt
+         my_prompt_loop(install_help => 'local::lib', $matcher,
+                    'local::lib|sudo|manual');
diff --git a/packages/sendxmpp/build.sh b/packages/sendxmpp/build.sh
index 252bfed9f67d69..5da9c3871f7017 100644
--- a/packages/sendxmpp/build.sh
+++ b/packages/sendxmpp/build.sh
@@ -3,6 +3,7 @@ TERMUX_PKG_DESCRIPTION="A perl-script to send XMPP (jabber) messages"
 TERMUX_PKG_MAINTAINER="@termux"
 TERMUX_PKG_LICENSE="GPL-2.0"
 TERMUX_PKG_VERSION=1.24
+TERMUX_PKG_REVISION=1
 TERMUX_PKG_SRCURL=https://github.com/lhost/sendxmpp/archive/refs/tags/${TERMUX_PKG_VERSION}.tar.gz
 TERMUX_PKG_SHA256=dfaf735b4585efd6b3b0f95db31203f9ab0fe607b50e75c6951bc18a6269837d
 TERMUX_PKG_DEPENDS="perl, clang, make"
@@ -18,8 +19,10 @@ termux_step_create_debscripts()  {
 	#!$TERMUX_PREFIX/bin/bash
 	set -e
 
+	export PERL_MM_USE_DEFAULT=1
+
 	echo "Sideloading Perl Authen::SASL and Net::XMPP ..."
-	cpan -fi Authen::SASL Net::XMPP
+	cpan -Ti Authen::SASL Net::XMPP
 
 	exit 0
 	POSTINST_EOF
diff --git a/scripts/setup-termux.sh b/scripts/setup-termux.sh
index 30d6f764bd1577..401669409f58ef 100755
--- a/scripts/setup-termux.sh
+++ b/scripts/setup-termux.sh
@@ -8,6 +8,7 @@ PACKAGES+=" gnupg"				# Used in termux_get_repo_files() and build-package.sh.
 PACKAGES+=" lzip"				# Used by tar to extract *.tar.lz source archives.
 PACKAGES+=" patch"				# Used for applying patches on source code.
 PACKAGES+=" python"				# Used buildorder.py core script.
+PACKAGES+=" python-pip" # Necessary to install 'itstool' for on-device-building (since Ubuntu gets it from 'apt')
 PACKAGES+=" unzip"				# Used to extract *.zip source archives.
 PACKAGES+=" jq"					# Used for parsing repo.json.
 PACKAGES+=" binutils-is-llvm"			# Used for checking symbols.
@@ -25,9 +26,11 @@ PACKAGES+=" ed"
 PACKAGES+=" flex"
 PACKAGES+=" gettext"
 PACKAGES+=" git"
+PACKAGES+=" glslang"                    # Needed by mesa
 PACKAGES+=" golang"
 PACKAGES+=" gperf"
 PACKAGES+=" help2man"
+PACKAGES+=" intltool"                   # Needed by qalc
 PACKAGES+=" libtool"
 PACKAGES+=" llvm-tools"		# Needed to build rust
 PACKAGES+=" m4"
@@ -42,11 +45,25 @@ PACKAGES+=" re2c"                       # Needed by kphp-timelib
 PACKAGES+=" rust"
 PACKAGES+=" scdoc"
 PACKAGES+=" texinfo"
+PACKAGES+=" spirv-tools"                # Needed by mesa
 PACKAGES+=" uuid-utils"
 PACKAGES+=" valac"
 PACKAGES+=" xmlto"                      # Needed by git's manpage generation
 PACKAGES+=" zip"
 
+PYTHON_PACKAGES=""
+PYTHON_PACKAGES+=" itstool"      # necessary to build orca and some other packages
+PYTHON_PACKAGES+=" pygments"     # necessary to build mesa (dependency of mako that _must_ be kept `--upgrade`d)
+PYTHON_PACKAGES+=" mako"         # necessary to build mesa
+PYTHON_PACKAGES+=" pyyaml"       # necessary to build mesa
+PYTHON_PACKAGES+=" setuptools"   # necessary to build mesa (explicitly 'system'-wide unlike the setuptools in termux_setup_python_pip)
+# More 'system-wide' python packages should be added here if working towards the goal
+# of setup-termux.sh for on-device building having closer behavior
+# to setup-ubuntu.sh for cross-compilation. If adding packages here, please add a comment
+# for each one naming at least one of its reverse build dependencies, for which least one
+# error during on-device building is solved by installing the dependency through pip.
+#PYTHON_PACKAGES+=" "
+
 # Definition of a package manager
 export TERMUX_SCRIPTDIR=$(dirname "$(realpath "$0")")/../
 . $(dirname "$(realpath "$0")")/properties.sh
@@ -62,3 +79,9 @@ else
 	echo "Error: no package manager defined"
 	exit 1
 fi
+
+# Should not be installed inside venv because on Ubuntu cross-builder image, these
+# particular python packages are installed system-wide,
+# so should be installed Termux-wide for on-device building to be reasonably accurate
+# compared with the behavior of the Ubuntu cross-builder image.
+pip install --upgrade $PYTHON_PACKAGES
diff --git a/x11-packages/xdg-menu/build.sh b/x11-packages/xdg-menu/build.sh
index 8c71cae4db58d4..68649cd323c80f 100644
--- a/x11-packages/xdg-menu/build.sh
+++ b/x11-packages/xdg-menu/build.sh
@@ -3,6 +3,7 @@ TERMUX_PKG_DESCRIPTION="Tool that generates XDG Desktop Menus for icewm and othe
 TERMUX_PKG_LICENSE="GPL-2.0-or-later"
 TERMUX_PKG_MAINTAINER="@termux"
 TERMUX_PKG_VERSION="0.7.6.6"
+TERMUX_PKG_REVISION=1
 TERMUX_PKG_SRCURL="https://arch.p5n.pp.ru/~sergej/dl/2023/arch-xdg-menu-$TERMUX_PKG_VERSION.tar.gz"
 TERMUX_PKG_SHA256=01cbd3749939c180fed33783f0f7c4f47ac9563af2d1c4b39e23cb6cba792b40
 TERMUX_PKG_DEPENDS="perl"
@@ -37,8 +38,10 @@ termux_step_create_debscripts()  {
 	#!$TERMUX_PREFIX/bin/bash
 	set -e
 
+	export PERL_MM_USE_DEFAULT=1
+
 	echo "Sideloading Perl XML::Parser..."
-	cpan install XML::Parser
+	cpan -Ti XML::Parser
 
 	exit 0
 	POSTINST_EOF
diff --git a/x11-packages/xdg-utils/build.sh b/x11-packages/xdg-utils/build.sh
index e2f87371512841..74da6ff3b857ec 100644
--- a/x11-packages/xdg-utils/build.sh
+++ b/x11-packages/xdg-utils/build.sh
@@ -3,6 +3,7 @@ TERMUX_PKG_DESCRIPTION="A set of simple scripts that provide basic desktop integ
 TERMUX_PKG_LICENSE="MIT"
 TERMUX_PKG_MAINTAINER="@termux"
 TERMUX_PKG_VERSION="1.2.1"
+TERMUX_PKG_REVISION=1
 TERMUX_PKG_SRCURL=https://gitlab.freedesktop.org/xdg/xdg-utils/-/archive/v${TERMUX_PKG_VERSION}/xdg-utils-v${TERMUX_PKG_VERSION}.tar.bz2
 TERMUX_PKG_SHA256=93d510dccf328378f012fe195b4574c2fac1cd65a74d0852d6eaa72e5a2065a7
 TERMUX_PKG_AUTO_UPDATE=true
@@ -33,8 +34,10 @@ termux_step_create_debscripts() {
 	#!$TERMUX_PREFIX/bin/bash
 	set -e
 
+	export PERL_MM_USE_DEFAULT=1
+
 	echo "Sideloading Perl File::MimeInfo ..."
-	cpan -fi File::MimeInfo
+	cpan -Ti File::MimeInfo
 
 	exit 0
 	POSTINST_EOF