From 846db7f606b4bea8d064b1c2edcb6a5ecdc4d935 Mon Sep 17 00:00:00 2001
From: Ian Kelling <iank@fsf.org>
Date: Mon, 28 May 2018 18:45:15 -0400
Subject: [PATCH] wait for dpkg locks

---
 src/package-manager-abstractions | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/src/package-manager-abstractions b/src/package-manager-abstractions
index 6d433d2..f70bf1d 100644
--- a/src/package-manager-abstractions
+++ b/src/package-manager-abstractions
@@ -65,14 +65,7 @@ elif command -v apt-get &>/dev/null; then
         if dpkg -s -- "$@" &>/dev/null; then
             return 0
         fi
-        pupdate
-        local s; [[ $EUID != 0 ]] && s=sudo
-        $s apt-get -y install --purge --auto-remove "$@"
-    }
-    pi() {
-        if dpkg -s -- "$@" &>/dev/null; then
-            return 0
-        fi
+        while fuser /var/lib/dpkg/lock &>/dev/null; do sleep 1; done
         pupdate
         local s; [[ $EUID != 0 ]] && s=sudo
         $s $PI_PREFIX apt-get -y install --purge --auto-remove "$@"
@@ -82,6 +75,7 @@ elif command -v apt-get &>/dev/null; then
         if dpkg -s -- "$@" &>/dev/null; then
             return 0
         fi
+        while fuser /var/lib/dpkg/lock &>/dev/null; do sleep 1; done
         pupdate
         local s; [[ $EUID != 0 ]] && s=sudo
         local f=/usr/sbin/policy-rc.d
@@ -109,11 +103,13 @@ EOF
     }
     pu() {
         local s; [[ $EUID != 0 ]] && s=sudo
+        while fuser /var/lib/dpkg/lock &>/dev/null; do sleep 1; done
         $s apt-get -y remove --purge --auto-remove  "$@"
         # seems slightly redundant, but it removes more stuff sometimes.
         $s apt-get -y autoremove
     }
     pup() { # upgrade
+        while fuser /var/lib/dpkg/lock &>/dev/null; do sleep 1; done
         pupdate
         local s; [[ $EUID != 0 ]] && s=sudo
         $s apt-get -y dist-upgrade --purge --auto-remove "$@"
-- 
2.30.2