diff --git a/packages/pari/build.sh b/packages/pari/build.sh
new file mode 100644
index 000000000..c35ebfc59
--- /dev/null
+++ b/packages/pari/build.sh
@@ -0,0 +1,28 @@
+TERMUX_PKG_HOMEPAGE=https://pari.math.u-bordeaux.fr/
+TERMUX_PKG_DESCRIPTION="A computer algebra system designed for fast computations in number theory"
+TERMUX_PKG_LICENSE="GPL-2.0"
+TERMUX_PKG_MAINTAINER="@termux"
+TERMUX_PKG_VERSION=2.13.3
+TERMUX_PKG_SRCURL=https://pari.math.u-bordeaux.fr/pub/pari/unix/pari-${TERMUX_PKG_VERSION}.tar.gz
+TERMUX_PKG_SHA256=ccba7f1606c6854f1443637bb57ad0958d41c7f4753f8ae8459f1d64c267a1ca
+TERMUX_PKG_DEPENDS="gzip, libgmp, readline"
+TERMUX_PKG_BUILD_IN_SRC=true
+TERMUX_PKG_EXTRA_CONFIGURE_ARGS="
+--with-gmp=$TERMUX_PREFIX
+--with-readline=$TERMUX_PREFIX
+"
+
+termux_step_pre_configure() {
+	LD="$CC"
+	case $TERMUX_ARCH_BITS in
+		32) PARI_DOUBLE_FORMAT=1 ;;
+		64) PARI_DOUBLE_FORMAT=- ;;
+	esac
+	export PARI_DOUBLE_FORMAT
+}
+
+termux_step_configure() {
+	./Configure --prefix=$TERMUX_PREFIX --host=$TERMUX_HOST_PLATFORM \
+		$TERMUX_PKG_EXTRA_CONFIGURE_ARGS
+	TERMUX_PKG_EXTRA_MAKE_ARGS="-C $(echo O*)"
+}
diff --git a/packages/pari/config-Makefile.SH.patch b/packages/pari/config-Makefile.SH.patch
new file mode 100644
index 000000000..6b645fd3d
--- /dev/null
+++ b/packages/pari/config-Makefile.SH.patch
@@ -0,0 +1,12 @@
+--- a/config/Makefile.SH
++++ b/config/Makefile.SH
+@@ -130,8 +130,7 @@
+ RUNPTH_FINAL=
+ RUNPTH=
+ if test -n "$runpathprefix"; then
+-  RUNPTH_FINAL=`$config_dir/ldflags "$LDneedsWl" $runpathprefix"$tmp"`
+-  RUNPTH=`$config_dir/ldflags "$LDneedsWl" $runpathprefix\\\$\(TOPDIR\)/$objdir$dir_sep"$tmp"`
++  :
+ fi
+ 
+ if test -z "$DLLD"; then
diff --git a/packages/pari/config-get_cc.patch b/packages/pari/config-get_cc.patch
new file mode 100644
index 000000000..c15c1c731
--- /dev/null
+++ b/packages/pari/config-get_cc.patch
@@ -0,0 +1,20 @@
+--- a/config/get_cc
++++ b/config/get_cc
+@@ -54,7 +54,7 @@
+ cmd="$CC $CFLAGS $extraflag -o $exe ansi.c";
+  . log_cmd
+ if test -s $exe; then
+-  $RUNTEST $exe
++  :
+ fi
+ if test $? != 0 -o ! -s $exe; then cat << EOT
+ ###
+@@ -71,7 +71,7 @@
+   exe=$osname-$arch-gnu$$$exe_suff
+   cmd="$CC $extraflag -o $exe gnu.c"
+   . log_cmd
+-  if $RUNTEST $exe; then
++  if true; then
+     # avoid internationalization trouble by setting LANG=C
+     __gnuc__=`env LANG=C LC_ALL=C LC_MESSAGES=C PATH="$PATH" $CC -v 2>&1 |\
+       grep ' version ' | tr '\n' , | sed -e 's/ *,$//' |\
diff --git a/packages/pari/config-get_double_format.patch b/packages/pari/config-get_double_format.patch
new file mode 100644
index 000000000..a83acbf37
--- /dev/null
+++ b/packages/pari/config-get_double_format.patch
@@ -0,0 +1,11 @@
+--- a/config/get_double_format
++++ b/config/get_double_format
+@@ -1,7 +1,7 @@
+ exe=$osname-$arch-endian$$$exe_suff
+ cmd="$CC $CFLAGS $extraflag endian.c -o $exe"; . log_cmd
+ if test -r $exe; then
+-  doubleformat=`$RUNTEST $exe`;
++  doubleformat=$PARI_DOUBLE_FORMAT;
+ else
+   echo "***************************************************************"
+   echo "Cannot compile endian.c. Aborting. PLEASE REPORT!"
diff --git a/packages/pari/config-get_gmp.patch b/packages/pari/config-get_gmp.patch
new file mode 100644
index 000000000..944da28c0
--- /dev/null
+++ b/packages/pari/config-get_gmp.patch
@@ -0,0 +1,11 @@
+--- a/config/get_gmp
++++ b/config/get_gmp
+@@ -41,7 +41,7 @@
+ fi
+ 
+ if test -r $exe; then
+-  gmp_version=`env LD_LIBRARY_PATH="$LD_LIBRARY_PATH$dir_sep$gmp" $RUNTEST $exe`;
++  gmp_version=6.2.1;
+ fi
+ case "$gmp_version" in
+   unsupported) gmp=
diff --git a/packages/pari/config-get_readline.patch b/packages/pari/config-get_readline.patch
new file mode 100644
index 000000000..d9ea5290d
--- /dev/null
+++ b/packages/pari/config-get_readline.patch
@@ -0,0 +1,11 @@
+--- a/config/get_readline
++++ b/config/get_readline
+@@ -52,7 +52,7 @@
+ 
+ readline_version=
+ if test -r $exe; then
+-  readline_version=`env LD_LIBRARY_PATH="$LD_LIBRARY_PATH$dir_sep$readline" $RUNTEST $exe`;
++  readline_version=8.1;
+ fi
+ . cleanup_exe
+ 
diff --git a/packages/pari/config-paricfg.h.SH.patch b/packages/pari/config-paricfg.h.SH.patch
new file mode 100644
index 000000000..07a07a4ab
--- /dev/null
+++ b/packages/pari/config-paricfg.h.SH.patch
@@ -0,0 +1,26 @@
+--- a/config/paricfg.h.SH
++++ b/config/paricfg.h.SH
+@@ -58,19 +58,19 @@
+   echo '#define ASMINLINE' >> $file
+ fi
+ 
+-if test -n "$gzip"; then
++if test -n "@TERMUX_PREFIX@/bin/gzip"; then
+   cat >> $file << EOT
+ 
+ /*  Location of GNU gzip program (enables reading of .Z and .gz files). */
+ #define GNUZCAT
+-#define ZCAT "$gzip -dc"
++#define ZCAT "@TERMUX_PREFIX@/bin/gzip -dc"
+ 
+ EOT
+-else if test -n "$zcat"; then
++else if test -n "@TERMUX_PREFIX@/bin/zcat"; then
+   cat >> $file << EOT
+ 
+ /*  Location of zcat program (enables reading of .Z files). */
+-#define ZCAT "$zcat"
++#define ZCAT "@TERMUX_PREFIX@/bin/zcat"
+ 
+ EOT
+   fi
diff --git a/packages/pari/src-language-es.c.patch b/packages/pari/src-language-es.c.patch
new file mode 100644
index 000000000..13453f46e
--- /dev/null
+++ b/packages/pari/src-language-es.c.patch
@@ -0,0 +1,13 @@
+--- a/src/language/es.c
++++ b/src/language/es.c
+@@ -4784,8 +4784,8 @@ pari_tmp_dir(void)
+   s = env_ok("TEMP"); if (s) return s;
+ #endif
+ #if defined(UNIX) || defined(__EMX__)
+-  if (pari_is_rwx("/tmp")) return "/tmp";
+-  if (pari_is_rwx("/var/tmp")) return "/var/tmp";
++  if (pari_is_rwx("@TERMUX_PREFIX@/tmp")) return "@TERMUX_PREFIX@/tmp";
++  if (pari_is_rwx("@TERMUX_PREFIX@/var/tmp")) return "@TERMUX_PREFIX@/var/tmp";
+ #endif
+   return ".";
+ }
diff --git a/packages/pari/src-language-gplib.c.patch b/packages/pari/src-language-gplib.c.patch
new file mode 100644
index 000000000..3de8b3d30
--- /dev/null
+++ b/packages/pari/src-language-gplib.c.patch
@@ -0,0 +1,11 @@
+--- a/src/language/gplib.c
++++ b/src/language/gplib.c
+@@ -806,7 +806,7 @@ gprc_get(void)
+     f = gprc_chk(str); /* in $HOME */
+     if (!f) f = gprc_chk(s); /* in . */
+ #ifndef _WIN32
+-    if (!f) f = gprc_chk("/etc/gprc");
++    if (!f) f = gprc_chk("@TERMUX_PREFIX@/etc/gprc");
+ #else
+     if (!f)  /* in basedir */
+     {