Adding MAKE_JOBS_SAFE to pbulk-index

[Jonathan Perkin <jperkin%pkgsrc.org@localhost>]

The next version of bob will include a dynamic scheduler. This will 
automatically tune MAKE_JOBS and WRKOBJDIR based on current and 
historical builds.

In order to correctly allocate MAKE_JOBS per worker I am currently 
discovering whether a package is MAKE_JOBS_SAFE at build time, but this 
is somewhat backwards as the scheduler has already provided the build 
with its recommendation, and is rather inefficient due to requiring an 
extra "show-vars" run for each build.

What I'd like to do is extend the pbulk-index output to include 
MAKE_JOBS_SAFE. That way everything can be done up-front.

  diff -u -U 1 -r1.30 pbulk-index.mk
  --- mk/pbulk/pbulk-index.mk     17 Dec 2024 10:38:10 -0000      1.30
  +++ mk/pbulk/pbulk-index.mk     11 Mar 2026 09:33:04 -0000
  @@ -131,2 +131,3 @@
                  echo "SCAN_DEPENDS="${_PBULK_SCAN_DEPENDS:O:u:Q}; \
  +               echo "MAKE_JOBS_SAFE="${MAKE_JOBS_SAFE:Q}; \
                  [ -z ${PBULK_WEIGHT:Q} ] || echo "PBULK_WEIGHT="${PBULK_WEIGHT:Q}; \

Ok?  As I will need to update pkgsrc-rs[0] to support this, now would be 
an ideal time to add any other fields that people think might be useful.

Thanks,

[0]: https://github.com/jperkin/pkgsrc-rs/blob/master/src/scanindex.rs

--
Jonathan Perkin                    pkgsrc.smartos.org
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