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[SCRIPT] unmaskmerge (helps merging masked packages)
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TheBunman
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Joined: 05 May 2004
Posts: 28

PostPosted: Tue Dec 23, 2008 7:33 pm    Post subject: [SCRIPT] unmaskmerge (helps merging masked packages) Reply with quote

Hi Folks,

I've written an small bash script that helps me merging (keyworded) packages with (multiple) keyworded dependencies.
Since I used it for some time now, I decided to share it with the community.

For example:
$ unmaskmerge games-sports/ultimatestunts
Quote:
* Execute command 'emerge games-sports/ultimatestunts' ? (y/n) y
[ FAILED ] running 'emerge -pv games-sports/ultimatestunts'

* it seems like games-sports/ultimatestunts is masked by keyword. set keyword? (y/n) y

[ - OK - ] setting keyword for games-sports/ultimatestunts
[ - OK - ] running emerge -pv games-sports/ultimatestunts


These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild N ] games-sports/ultimatestunts-0.7.5 USE="nls" 16,399 kB

Total: 1 package (1 new), Size of downloads: 16,399 kB

* is this ok? (y/n)


If you type y the actual merge process will be started.

When there are more keyworded dependencies you will be asked for each depending package if you want to set the keyword for it.


To install this script, copy the following script into /usr/bin/unmaskmerge
Code:
#!/usr/bin/env bash

# Gentoo unmaskmerge script beta1
# written by Lorenz Werner 2008
# License: none (if you are an nice person you keep my name in the comment above)

# printf colors
RED="\033[31m"
GREEN="\033[32m"
BLUE="\033[34m"
LIGHT_GRAY="\033[37m"

# define some styles for the exit_status function
ASTERISK="$GREEN *$LIGHT_GRAY"
ACTIVE="\r $LIGHT_GRAY[$BLUE ACTIVE $LIGHT_GRAY]"

# check if user has root rights
if [[ $UID -ne 0 ]]; then
   printf $RED"$0 must be run as root\n"
   exit 1
fi

# check if neccessary directories exists
if [ ! -d "/etc/portage/package.keywords/unmaskmerge" ]; then
   printf $RED"$0 missing directory '/etc/portage/package.keywords/unmaskmerge'\n"
   exit 1
fi

# check if an command is provided
if [ "$1" == "" ]; then
   printf $RED"please provide emerge command\n"
   printf $LIGHT_GRAY"eg: $0 -upD world\n"
   exit
fi

# this function provides the OK and FAILED messages
function exit_status() {
   X=$?
   if [ $1 != "" ]; then
      if [ $1 != "exit" ]; then
         STATUS=$1
      else
         STATUS=$X
      fi
   else
      STATUS=$X
   fi
   
   if [ $STATUS == 0 ]; then
      printf "\r $LIGHT_GRAY[ -$GREEN OK $LIGHT_GRAY- ]\n"
   else
      printf "\r $LIGHT_GRAY[$RED FAILED $LIGHT_GRAY]\n"
      if [ $1 == "exit" ]; then
         exit 1
      fi
   fi
}

# confirm the command to be executed
printf "$ASTERISK Execute command 'emerge $@' ? (y/n) "
read OK
if [ "$OK" != "y" ]; then
   exit 1
fi

# emerge pretend the choosen action
printf "$ACTIVE running$GREEN 'emerge -pv $@'"
emerge -pv $@ > /dev/null
STATUS=$?
exit_status $STATUS

LAST_DEPENDENCY=""

# if the exit status from the last emerge command is not 0 check if there are packages to unmask
while [ $STATUS != 0 ]; do
   # parse emerge output for keyworded dependencies
   DEPEND=`emerge -pv $@ | grep "All ebuilds that could satisfy" | grep -o '".*"' | sed -e 's/\"//g'`

   # if depend is empty, then we couldn't find any dependency
   if [ "$DEPEND" == "" ]; then
      printf "\n$RED sorry, it seems like there is some problem, please try running 'emerge $@' by hand.\n"
      exit
   fi

   # if depend is equal to last_dependency, then the keyword we have set doesn't work
   if [ "$LAST_DEPENDENCY" == "$DEPEND" ]; then
      printf "\n$RED sorry, it seems like the package has already been keyworded.\n"
      exit
   fi

   # confirm if keyword should be set
   printf "\n"
   printf "$ASTERISK it seems like $GREEN$DEPEND$LIGHT_GRAY is masked by keyword. set keyword? (y/n) "

   read OK
   if [ "$OK" != "y" ]; then
      printf "$RED aborting ...\n"
      exit
   fi

   # set keyword for package / dependency
   printf "\n$ACTIVE setting keyword for $GREEN$DEPEND"
   DIR="/etc/portage/package.keywords/unmaskmerge/`dirname "$DEPEND" | sed "s/[\>\<\=\~]//g"`"
   FILE="`basename "$DEPEND" | sed "s/[\>\<\=\~]//g"`"
   mkdir -p "$DIR"
   echo "$DEPEND" >> "$DIR/$FILE"
   exit_status exit

   # try to merge the package again
   printf "$ACTIVE running$GREEN emerge -pv $@"
   emerge -pv $@ > /dev/null
   STATUS=$?
   exit_status $STATUS
   
done

printf "\n"

# show user what emerge will actually do
emerge -pv $@

printf "\n"

# confirm if the user wants to run the actual merge
printf "$ASTERISK is this ok? (y/n) "
read OK

if [ "$OK" != "y" ]; then
   printf "$RED aborting ...\n"
   exit
else
   printf "\n$ASTERISK running 'emerge $@'\n\n"
   # start the actual merge
   emerge $@
fi


Then chmod 755 /usr/bin/unmaskmerge to make it executable.

This script needs also the directory /etc/portage/package.keywords/unmaskmerge/ where it creates the files to set the keyword for the packages.

All parameters are passed directly to emerge.
So you can also for example run: unmaskmerge --deep world


If you {like this script, find an bug, have any suggestions} post an comment or patch, and I will update this post.

Greetings
DerBunman
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Naib
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Joined: 21 May 2004
Posts: 4109
Location: Removed by Neddy

PostPosted: Tue Dec 23, 2008 10:19 pm    Post subject: Reply with quote

or... emerge autounmask
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TheBunman
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Joined: 05 May 2004
Posts: 28

PostPosted: Tue Dec 23, 2008 11:18 pm    Post subject: Reply with quote

oh nice :)
i didn't know this tool exists
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