Pass patch to make it sort of work in termux. Apply it to /src/password-store.sh and install with `make install`

pass.patch

--- password-store-master/src/password-store.sh	2016-02-07 12:05:52.000000000 +0100
+++ /data/data/com.termux/files/usr/bin/pass	2016-03-07 21:29:27.667761280 +0100
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/data/data/com.termux/files/usr/bin/env bash
 
 # Copyright (C) 2012 - 2014 Jason A. Donenfeld <[email protected]>. All Rights Reserved.
 # This file is licensed under the GPLv2+. Please see COPYING for more information.
@@ -12,7 +12,9 @@
 which gpg2 &>/dev/null && GPG="gpg2"
 [[ -n $GPG_AGENT_INFO || $GPG == "gpg2" ]] && GPG_OPTS+=( "--batch" "--use-agent" )
 
+TERMUXPREFIX=$PREFIX
 PREFIX="${PASSWORD_STORE_DIR:-$HOME/.password-store}"
+
 X_SELECTION="${PASSWORD_STORE_X_SELECTION:-clipboard}"
 CLIP_TIME="${PASSWORD_STORE_CLIP_TIME:-45}"
 GENERATED_LENGTH="${PASSWORD_STORE_GENERATED_LENGTH:-25}"
@@ -133,13 +135,13 @@
 	# variable. Specifically, it cannot store nulls nor (non-trivally) store
 	# trailing new lines.
 	local sleep_argv0="password store sleep on display $DISPLAY"
-	pkill -f "^$sleep_argv0" 2>/dev/null && sleep 0.5
-	local before="$(xclip -o -selection "$X_SELECTION" 2>/dev/null | base64)"
-	echo -n "$1" | xclip -selection "$X_SELECTION" || die "Error: Could not copy data to the clipboard"
+	pgrep -f "^$sleep_argv0" | xargs kill 2>/dev/null && sleep 0.5
+	local before="$(termux-clipboard-get 2>/dev/null | base64)"
+	echo -n "$1" | termux-clipboard-set || die "Error: Could not copy data to the clipboard"
 	(
-		( exec -a "$sleep_argv0" sleep "$CLIP_TIME" )
-		local now="$(xclip -o -selection "$X_SELECTION" | base64)"
-		[[ $now != $(echo -n "$1" | base64) ]] && before="$now"
+		( exec -a "$sleep_argv0" coreutils --coreutils-prog=sleep "$CLIP_TIME" )
+		local now="$(termux-clipboard-get  | base64 )"
+		[[ $now != $(echo "$1" | base64) ]] && before="$now"
 
 		# It might be nice to programatically check to see if klipper exists,
 		# as well as checking for other common clipboard managers. But for now,
@@ -150,7 +152,7 @@
 		# so we axe it here:
 		qdbus org.kde.klipper /klipper org.kde.klipper.klipper.clearClipboardHistory &>/dev/null
 
-		echo "$before" | base64 -d | xclip -selection "$X_SELECTION"
+		echo "$before" | base64 -d| termux-clipboard-set
 	) 2>/dev/null & disown
 	echo "Copied $2 to clipboard. Will clear in $CLIP_TIME seconds."
 }
@@ -174,7 +176,8 @@
 		Are you sure you would like to continue?
 		_EOF
 		)"
-		SECURE_TMPDIR="$(mktemp -d "${TMPDIR:-/tmp}/$template")"
+                echo "mktemp -d ${TMPDIR:-$TERMUXPREFIX/tmp}/$template"
+		SECURE_TMPDIR="$(mktemp -d "${TMPDIR:-$TERMUXPREFIX/tmp}/$template")"
 		shred_tmpfile() {
 			find "$SECURE_TMPDIR" -type f -exec $SHRED {} +
 			rm -rf "$SECURE_TMPDIR"