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Thomas De Schampheleire

hooks: make the Python interpreter for Git hooks configurable as 'git_hook_interpreter' (Issue #333)

Commit 5e501b6ee639 introduced the use of 'sys.executable' as interpreter
for git hooks instead of 'python2' with the following argument:

"Windows doesn't necessarily have "python2" available in $PATH, but we
still want to make sure we don't end up invoking a python3. Using the
absolute path seems more safe."

But, sys.executable does not necessarily point to Python. When Kallithea is
started under uWSGI, sys.executable points to the uwsgi executable. As a
result, the interpreter encoded in the git hooks on the server repositories
would be:

#!/path/to/uwsgi

And pushing to such repo would result in following client errors:

$ git push
Password for 'http://user@localhost:5050':
Enumerating objects: 3, done.
Counting objects: 100% (3/3), done.
Writing objects: 100% (3/3), 241 bytes | 241.00 KiB/s, done.
Total 3 (delta 0), reused 0 (delta 0)
remote: unable to load configuration from hooks/pre-receive
To http://localhost:5050/gitrepo-new
! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'http://user@localhost:5050/gitrepo-new'

Fix this problem by introducing a configuration setting 'git_hook_interpreter'
that allow administrators to specify which Python interpreter to use.

A subsequent commit will cause its value to be filled in automatically when
generating a new ini file, but an administrator can always override it.

#!/sbin/runscript
########################################
#### THIS IS AN GENTOO INIT.D SCRIPT####
########################################

APP_NAME="kallithea"
APP_HOMEDIR="username/python_workspace"
APP_PATH="/home/$APP_HOMEDIR/$APP_NAME"

CONF_NAME="production.ini"

PID_PATH="$APP_PATH/$APP_NAME.pid"
LOG_PATH="$APP_PATH/$APP_NAME.log"

PYTHON_PATH="/home/$APP_HOMEDIR/v-env"

RUN_AS="username"

DAEMON="$PYTHON_PATH/bin/gearbox"

DAEMON_OPTS="serve --daemon \
--user=$RUN_AS \
--group=$RUN_AS \
--pid-file=$PID_PATH \
--log-file=$LOG_PATH -c $APP_PATH/$CONF_NAME"

#extra options
opts="${opts} restartdelay"

depend() {
    need nginx
}

start() {
    ebegin "Starting $APP_NAME"
    start-stop-daemon -d $APP_PATH -e PYTHON_EGG_CACHE="/tmp" \
        --start --quiet \
        --pidfile $PID_PATH \
        --user $RUN_AS \
        --exec $DAEMON -- $DAEMON_OPTS
    eend $?
}

stop() {
    ebegin "Stopping $APP_NAME"
    start-stop-daemon -d $APP_PATH \
        --stop --quiet \
        --pidfile $PID_PATH || echo "$APP_NAME - Not running!"
    if [ -f $PID_PATH ]; then
        rm $PID_PATH
    fi
    eend $?
}

restartdelay() {
    #stop()
    echo "sleep3"
    sleep 3

    #start()
}