tz VS polonius

A link was added from "Europe/Kiev" to "Europe/Kyiv" in the included-by-default backward file [0], so that any user that doesn't exclude that file will simply treat the old name as an alias for the new name.

[0] https://github.com/eggert/tz/commit/e13e9c531fc48a04fb8d064a...

timeZone: Determines the current timezone to use to display the time e.g. America/Los_Angeles. Full list can be found on IANA time zone database

"Eire" is in there, for instance, to deal with software that assumes that the "is_dst" half of the year is during the (northern) summer, but Ireland technically does it the other way around -- a distinction relevant only to computers.

https://github.com/eggert/tz/blob/c3e966c59b02b1f47f0b7b0e4a...

The only other timezone that currently has a non-1h offset for DST -- Ireland's is -1 hours -- is Australia/Lord_Howe, which has a 30-min positive leap.

Prof Paul Eggert is currently the editor and coordinator of the Time Zone Database of IANA, which enables timestamps on official documents and photos.

I've looked at it, but wanted to work with the tz source repository directly (I think local-time gets their zone files from Ubuntu). Also getting zic running in a portable way seemed too much of a hassle. The text file format is not all that complicated and documented in the zic manual pretty well. This approach is also chosen by the JDK as far as I can tell.

Subscribe to tz-announce for more fun: https://www.iana.org/time-zones

Unfortunately, you just wait. The person(s) at IANA who manages The Time Zone Database is certainly aware, and from there it "just" has to percolate down to Google and your phone.

most systems use https://www.iana.org/time-zones

And have you looked at the TZ database? My God it's a hot mess, and for good reason: human governments are terrible at creating code. Worse even than beginning CS students, because at least CS students know they don't know what they're doing, while politicians are both stupid and arrogant enough to think they're not stupid.

Correctness prover which uses lifetimes (Polonius).

And, well, polonius (Rust borrow checker magic) I believe is built on datalog-ish concepts: https://github.com/rust-lang/polonius

There is also polonius (https://github.com/rust-lang/polonius) which should replace the borrow checker but does not receive a lot of development resources.

This is eventually going to be a feature-complete compiler, targeting a specific rustc version. I believe the plan is to use polonius [1], presumably as an "optional" feature so they can build a stage 1 without it, use that to build polonius, then build the final compiler with it included.

[1] https://github.com/rust-lang/polonius

E.g. there you may just stop using current borrow-checker and switch to Polonius.

The borrow checker is too dumb (https://github.com/rust-lang/polonius) fixes a lot of this.

It looks like an official borrow checker implementation called Polonius uses it as a dependency, so it makes sense: https://github.com/rust-lang/polonius/blob/981785c101b68ff54...

If you click around a little, you end up on a blog post with this tidbit:

> This project got put together rather suddenly, in response to some work the Rust folks are doing[1] on their new and improved borrow checker.

I don't think I could tell you more than "Frank wrote it to help rust folks who were previously doing work with differential-dataflow directly."

1. https://github.com/rust-lang/polonius/pull/36#issuecomment-3...

Good news is that there's also works going on to relax the restrictions, like polonius. But it seems that it still have a long way to go before it can land in stable Rust...

GCC-rs isn't intended for bootstrapping, it is intended to be an actual fully featured Rust compiler in the future, mrustc is a Rust compiler intended for bootstrapping though. GCC-rs is still very early targeting an older version of the reference compiler without things like a borrow checker, but that's not going to be the case forever. The GCC-rs folks have expressed interest in re-using the borrow checker library used by the reference compiler called polonius enabling them to relatively easily add borrow checking.