updatemesagit.sh - Easily update Mesa git from Siduction experimental repo

updatemesagit.sh

#!/bin/bash
# updatemesagit.sh
# Easily update Mesa git from Siduction experimental repo
# Created 2020-04-15 - Updated 2022-05-01
# Written for Siduction (Debian sid based distro)
# By dpanter https://gist.github.com/dpanter


# setting color variables for fancy pants output
WHITE='\e[1;37m'
RED='\e[0;31m'
LRED='\e[1;31m'
GREEN='\e[0;32m'
LGREEN='\e[1;32m'
YELLOW='\e[1;33m'
NC='\e[0m' # No Color, ${NC}


# sanity check if Siduction experimental repo is actually enabled, else abort
CHECKREPO=$(grep -RiH 'siduction' /etc/apt/sources* | grep -E 'deb.*siduction.*experimental' | grep -v "#" | awk -F:deb '{ print "FILE: " $1 " REPO: deb" $2 }')

if [ -z "$CHECKREPO" ]; then
   echo -e "${LRED}\nCannot determine if Siduction experimental repo is enabled."
   echo -e "This is required for updating mesa git. Check your repos!"
   echo -e "Update aborted.\n${NC}"
   exit 1
else
   echo -e "${LGREEN}\nLooks like Siduction experimental repo is enabled:${NC}"
   echo -e "${GREEN}$CHECKREPO\n${NC}"
fi


#update APT cache
echo -e "${YELLOW}Updating APT cache, please wait...\n${NC}"
sudo apt -qq update 2>/dev/null >/dev/null


# check currently installed version
MESAINST=$(apt list -i mesa-va-drivers 2>/dev/null | awk -F' ' '/amd64/ { print $2 }')

# check most recent version in APT cache
MESAUP=$(apt list -a mesa-va-drivers 2>/dev/null | grep -E 'unknown.*git.*amd64' | awk -F' ' '/git/ { print $2 }')

# check if update is possible, else abort
if [ "$MESAUP" == "$MESAINST" ]; then
   echo -e "${WHITE}Already using latest version in cache: ${LGREEN}$MESAINST\n${NC}"
else
# present versions and give choice to update
    echo -e "Installed version: ${GREEN}$MESAINST${NC}"
    echo -e " Update available: ${LGREEN}$MESAUP${NC}"
    read -n 1 -p "Apply update? Press y to proceed. " input
    echo ""
# watch for input "y" to update, else abort
    if [[ $input == y ]]; then
       sudo apt install {mesa-va-drivers,mesa-va-drivers:i386,mesa-vdpau-drivers,mesa-vdpau-drivers:i386,mesa-vulkan-drivers,mesa-vulkan-drivers:i386,libglapi-mesa,libglapi-mesa:i386,libglx-mesa0,libglx-mesa0:i386,libegl-mesa0,libegl-mesa0:i386,libgbm1,libgbm1:i386,libgl1-mesa-dri,libgl1-mesa-dri:i386}="$MESAUP"
    else
        echo -e "${LRED}Update aborted.\n${NC}"
    fi
fi