On 1/14/15 8:50 AM, Mathias LANG wrote:
IMO helpers (such as git helpers) are not part of the build process, so
they should not be part of the build files. Few people care about make
rebase. I'm not saying we should delete them (they obviously are useful
to you), but moving them to tools might be a good start.
This is about scaling up and passing responsibility around. I could
write a script and then tell whoever maintains dlang.org "first run that
script then run make" etc.
With make it turns out it's dead simple to get parallel rebase going:
REBASE = git pull upstream master --rebase
rebase: rebase-dlang rebase-dmd rebase-druntime rebase-phobos
rebase-dlang: ; $(REBASE)
rebase-dmd: ; cd $(DMD_DIR) && $(REBASE)
rebase-druntime: ; cd $(DRUNTIME_DIR) && $(REBASE)
rebase-phobos: ; cd $(PHOBOS_DIR) && $(REBASE)
So I'm done in 6 lines and it's parallel automatically, no code needed.
With zsh I'd probably go (untested)...
===========================
#/bin/zsh
set -e
function rebase() {
( cd $1 && git pull upstream master --rebase )
}
rebase . &&
rebase ../dmd &&
rebase ../druntime &&
rebase ../phobos &&
wait
===========================
But wait, there's less. The script:
* does not return nonzero if either subtask fails - and doing so needs
e.g. temporary files and takes extra code. So I need to carefully look
at the textual garbled output to make sure it all works.
* does not accept setting variables DMD_DIR etc. It can be made to, but
that's yet more code.
* cannot run serially if I want to debug something, only parallel. It
can be made do, but that's again more code!
So we're looking at an ideological response "don't use make, make sucks"
to a pragmatic matter - I want to get work done, and we shouldn't use
inferior/more intensive technical solutions on an ideological basis
alone. I agree make sucks! But that doesn't suddenly eliminate my common
sense.
For druntime / phobos build... That's really a shame we don't have a
standard D tool to build D code, cross platform.
If we had, not only would we promote an even saner image of our tooling
('hey look, dogfooding'), we won't have to solve the same problems over
and over again, so both druntime / phobos and the tool would benefit
from this, but ofc it will require some initial work.
If someone wants to get this project started, I have a suggestion for
the name: dub
Okay, sarcasms appart, would that be a possibility for us to switch to
dub in the long run ? I'm not sure dub is ready for that ATM, but I'm
confident it could be made ready without much work.
I'd be glad to switch to dub but I confess at this time I can't invest
the time. I'm already spread too thin.
Andrei
