Stephen Lau <stevel at sun.com> writes:

> I'm hacking on 285 right now, and my initial thought is to the following:
>
> in bringover_hg(), after the 'hg pull -u' is done for the open tree, 
> test to see if $CLOSED (defined as $CODEMGR_WS/usr/closed in the env 
> file) exists, and if $PARENT_CLOSED_WS (also defined in the env file) is 
> set.

I *think* PARENT_* is the wrong set of vars.
You want CLONE_ and BRINGOVER_ (see the little dance with those early
in nightly.sh).

> if both conditions are true, then we do the 'pull -u'.  so effectively, 
> nightly will never do the 'hg clone' for you.  this is inconvenient if 
> you want to work on closed code, which afaik, is a good thing. 
> (justification: 'closed source is teh sux0r').

After an initial bringover, $CLOSED will never exist.  
Am I reading the above to mean you're intending to never support an
*initial* bringover of usr/closed?  If that's the case, I disagree.

> but i concede that this is not uber friendly to Sun folks who don't have 
> a choice.  so my other thought is in the codepath where it does:
>          if [[ ! -d $CODEMGR_WS/.hg ]]; then
>                  staffer hg init $CODEMGR_WS
>          fi
> (at the top of bringover_hg), we see if PARENT_CLOSED_WS is set, and 
> also do a 'hg init' for the closed repository (thus causing it to be 
> pulled in in my proposed codepath above).

That I'm happier with.

> I think that should work, the check_closed_tree() check should allow it 
> to go through since the $SRC/Makefile.master check will show that the 
> workspace hasn't been initialised yet.
>
> What is slightly tricky (thanks Rich for pointing this out to me) is 
> that nightly then runs check_closed_tree() again to check again (to deal 
> with pre-split to post-split bringovers).  At this point, 
> CLOSED_IS_PRESENT will have already been set, so it won't actually check 
> it again.  So I think the 'hg clone' of the $PARENT_CLOSED_WS should 
> also explicitly set CLOSED_IS_PRESENT=yes.
>
> Does that make sense?  Or would it help if I just coded this up and 
> webrev'd it?
>

Am I right in thinking the only (current) users of nightly are ON, SFW
and CCD?  If so, I think that probably makes sense.

I'm wondering if there's benefit to generalizing the *destination* of
closed, to deal with other consolidations (such as NWS and Install,
which don't use nightly, but...) that may not follow the
$CODEMGR_WS/usr/*/... layout.

-- Rich

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