Shallow git update in bootstrap

[Carles Pina i Estany]

Hi,

This is a wishlist / question regarding using "--depth 2" in "git
submodule init --" in the bootstrap file.

I was building a project that uses gnulib (with bootstrap).

./bootstrap does:

"""
if git_modules_config submodule.gnulib.url >/dev/null; then
    echo "$0: getting gnulib files..."
    git submodule init -- "$gnulib_path" || exit $?
    git submodule update -- "$gnulib_path" || exit $?
"""

The "git submodule update" takes a long time. Would it be possible to
use "--depth 1" there? (and in other "git submodule update"s?

A few lines below it checks if "git clone -h 2>&1" has the option
--depth and use it if possible. Perhaps the same approch could be done
in the "git submodule update"s ? (in my case the default code path uses
"git submodule update" and not "git clone" with the --depth 2)

I wonder if there is any reason not to use the --depth 2 for the update.

When I say "long time" (and data transmission) in my case it's 9
minutes:
-----
carles@pinux:[master]~/git/wget2$ time git submodule update --init 
Cloning into '/home/carles/git/wget2/gnulib'...
Submodule path 'gnulib': checked out '2ae6faf9c78384dc6a2674b62dd56ff153cd51f6'

real    9m1,135s
user    6m24,309s
sys         0m5,020s
-----

Actually, the first time I wondered if the connection or something else
failed.

Thank you very much,

-- 
Carles Pina i Estany
https://carles.pina.cat || Wiktionary translations: https://kamus.pina.cat