Log message:
Update to 0.42c. From the changelog:

- jobserver.py: _try_read()'s alarm timeout needs to throw an exception.
- Documentation fixes.

pkgsrc changes:

- Avoid CONFLICTS with other redo implementations.

Log message:
Update to 0.42a. From the changelog:

- Add compatibility to Python 3 (and retain Python 2)
    - Remove python<3.0 restriction in setup.py
    - Make compatible to BeautifulSoup4
    - Accept octal representations of Python 2 (0nnn) and Python 3 (0onnn)
    - Prevent iterator being changed while iterating
    - Python 2/3 compatible treatment of max(n, None)
    - Prevent "Exception ... ignored" in `redo-log ... | head`
    - Distinguish byte (python2 str type) and unicode strings (python 3 str type)
    - Set file descriptor as inheritable for all pythons >=3.4
    - Unify print function usage for Python 2 and 3 via __future__ import
    - Run 2to3 utility
    - Remove python interpreter selection
- GettingStarted.md: Add -E option to sudo to preserve environment
- docs/cookbook/c: missing quote char.

Log message:
Update to 0.42. From the git log:

- mkdocs: enforce sufficiently new version, and use mkdocs-exclude.
- cookbook/container: example of building+running docker containers.
- cookbook/container: add missing PS1 to sh example
- Merge pull request #25 from ejona86/missing-ps1
- cookbook/container: remove unexplained "exec >&2" lines.
- cookbook/container: skip on missing cpio and missing kvm kernel image.
- cookbook/container: some minor clarifications.
- cookbook/container: minor proofreading
- Merge pull request #26 from martinmosegaard/proof-cook-container
- Better handling if parent closes REDO_CHEATFDS or MAKEFLAGS fds.
- docs/cookbook/container: don't delete *.out and *.code during build.
- mkdocs: include additional hljs languages.
- Fix builder: Reinstate stderr instead of opening /dev/tty
- Merge pull request #27 from spacefrogg/fix-tty
- cookbook/container/kvm: better handling of \r\n line endings.
- mkdocs: exclude more generated files from cookbook/container.
- Merge remote-tracking branch 'origin/master'
- mkdocs: exclude more generated file types.
- Experimental new redoconf C/C++ build/autoconfiguration system.
- redoconf: avoid sed -E in _objlist().
- redoconf: clock_gettime() detection needs to depend on -lrt.
- redoconf: better handling of required vs optional detectors.
- redoconf: posix.rc: fix abort when timespec is not available.
- Fix some build problems on MacOS X.
- minimal/do: remove dependency on 'seq' command.
- Precompiled headers: supply "-x c-header" or "-x \ 
c++-header" if available.
- docs/cookbook/c/allconfig.do: avoid need for '&' backgrounding.
- mkdocs: don't bother to include cookbook/c/out.*/ dirs.
- redoconf: move -Wl,-rpath flags to shlib.rc and add -Wl,-z,origin.
- minimal/do: remove dependency on 'seq' command.
- Certain redo post-build failures would still mark a target as built.
- Overridden files were accidentally getting reclassified as static.
- If redo searched all the way up to /default.do, it would run ./default.do instead.
- Explicitly reject target/source filenames with newlines in them.
- redo-ifchange regression: if REDO_LOG is not set, assume it's 1.
- builder.py: atomically replace the log for a given target.
- Merge branch 'master' into redoconf
- redoconf: assorted minor fixes.
- redoconf: a stub rc_include() now sources ./redoconf.rc automatically.
- Merge branch 'redoconf'
- logs.py: don't print (unchanged) lines with --no-log unless DEBUG.
- Change -x/-v to only affect top-level targets by default, not recursively.
- redo-log: sometimes print a (resumed) line after ending a level of recursion.
- Minor clarifications to redo install instructions.
- shelltest.od: warning 84 (W84) triggered on *all* shells, not just posh.
- Work around ancient shells where >$3 does not implicitly quote $3.
- docs/cookbook/container: update docker image builder.
- docs/cookbook/redoconf-simple: a simple redoconf C++ project.
- builder.py: create temp log file in the same directory as the final one.
- Unset CDPATH if it is set.
- redo-log: "(resumed)" lines didn't print as often as they should.
- Fix minor pylint warnings.
- redoconf/configure.sh: use "cmp -s" to silence output.
- cookbook/container/default.sha256.do: use explicit close_fds=False.
- Fix more problems with "/usr/bin/env python" picking python3.
- Merge remote-tracking branch 'origin/experimental/dockrepo'
- Oops, redo/whichpython.do would fail if python2.7 didn't exist.
- Disable docker container test from toplevel 'redo test'
- t/103-unicode: workaround unicode normalization on newer macOS.
- t/shelltest.od: Add a new preliminary test for IFS= behaviour.

Log message:
Try to get more info from failing bulk builds.

Log message:
Run self-test verbosely, to try to get more info from failing bulk builds.

Log message:
Initial import of Avery Pennarun's redo implementation.

redo is a competitor to the long-lived, but sadly imperfect, make
program. Unlike other such competitors, redo captures the essential
simplicity and flexibility of make, while avoiding its flaws. It manages
to do this while being simultaneously simpler than make, more flexible
than make, and more powerful than make, and without sacrificing
performance -- a rare combination of features.

The original design for redo comes from Daniel J. Bernstein. This
from-scratch implementation of redo is based on that design.