David, the idea is creating a dependency chain:
Port rust (version 1.66) depends on rust-1.65 to be build; Port rust-1.65 depends on rust-1.64 to be build; Port rust-1.64 depends on rust-1.63 to be build; ... Port rust-1.56 depends on rust-1.55 to be build; Port rust-1.55 depends on rust-1.54 to be build; Port rust-1.54 depends on mrsutc to be build. :) When someone would like to add rust 1.67, he need to add port rust-1.66 which should be used as bootstrap compiler. I hate this way, but it is the only way to bootstrap it from scratch. When mrust had support new rust, we may cut the tree by removing a lot of unused ports. -- wbr, Kirill > On 13. Dec 2022, at 17:53, David Gilman <davidgilm...@gmail.com> wrote: > > The work on mrustc is novel but I don't think it solves the issues we have > here. On modern systems MacPorts uses bootstrap compilers provided by Rust > upstream. MCL's bootstrap compilers are for older systems. > > To update rust, my understanding is that you have to do the usual work of > rebasing patches (my PR), but you also have to provide the binaries for older > systems which I could not provide. > > > On Tue, Dec 13, 2022, 11:07 AM Kirill A. Korinsky via macports-dev > <macports-dev@lists.macports.org <mailto:macports-dev@lists.macports.org>> > wrote: > Folks, > > From the third hand we may build our own bootstrap chain of rust from scratch. > > Or almost. > > We have a https://ports.macports.org/port/mrustc/details/ > <https://ports.macports.org/port/mrustc/details/> which is able to bootstrap > 1.54 rust on x86_64 and arm64. > > Unfortunately support of i386 isn't yet finished at upstream. I plan to fix > it, but it requires time and availability of hardware to test it :) > > I do have a commits which implements rust bootstrap by cahin: mrustc -> rust > 1.54 -> rust 1.55 -> rust 1.56; I can start to open PRs to move step-by-step > and in month we'll have the last rust via this chain. > > -- > wbr, Kirill > >> On 13. Dec 2022, at 16:49, Christopher Jones <jon...@hep.phy.cam.ac.uk >> <mailto:jon...@hep.phy.cam.ac.uk>> wrote: >> >> Hi, >> >> In my opinion, hosting and maintaining these ‘bootstrap’ compilers outside >> the macports infrastructure was a poor choice, for all the reasons you >> mention below. I thought this at the time it was done, and even more so now. >> >> Personally, I would suggest you think about a change to how the rust >> compiler is package, to mirror a bit how things are done with gcc and clang. >> Namely, move to a model where the version is part of the port name, e.g. the >> current one would be called something like rust-1.61. >> >> The main reason for doing this, is adding a new version would that not >> remove the previous version, and thus you could simple use it as the >> bootstrap compiler. So with the above, when you add rust-1.62 that would >> simple configure itself to bootstrap using the macports rust-1.61 port. >> >> Yes, this will require some work to set up. You will need to make all the >> various rust versions installable along side each other, so some tweaking of >> the install prefix would be needed. >> >> One thing I would do differently though to how gcc/clang do things is I >> would try and have a single rust port file, that implements all the versions >> as sub-ports. I suspect most of what each needs can then just be shared , >> such that what needs to be different for each sub-port is actually not that >> much. >> >> Regarding how users of rust then use these ports, there are a couple options >> >> 1. Add a shim port ‘rust’ which simply installs sym-links etc. to the >> ‘current best version’ that mimics the current installation, i.e. in the >> main prefix. If done well, users should then be blind to the changes above. >> 2. Users that want an older rust could explicitly depend on and use a >> specific versioned rust-N >> >> For me, this approach makes a lot more sense than the current way these >> bootstrap compilers are maintained. >> >> cheers Chris >> >> >>> On 13 Dec 2022, at 2:57 pm, Herby G <herby.gil...@gmail.com >>> <mailto:herby.gil...@gmail.com>> wrote: >>> >>> Hello all, >>> >>> Right now, Rust in MacPorts is severely out of date. It's about 5 versions >>> behind the current release, which at the moment is at 1.65.0. In >>> comparison, MacPorts Rust is currently at 1.61.0. >>> >>> As a core language underlying a lot of other ports, many of these ports >>> cannot be updated to their latest versions because these versions require >>> current versions of Rust. At the time of this writing, 156 ports are being >>> built using Rust ( https://ports.macports.org/port/rust/details/ >>> <https://ports.macports.org/port/rust/details/> ), some quite heavily used >>> by the community, including projects like `git-delta`, `bat` and `fd`. >>> >>> MarcusCalhoun-Lopez's PR here ( >>> https://github.com/macports/macports-ports/pull/14277 >>> <https://github.com/macports/macports-ports/pull/14277> ) heavily rewrote >>> the Rust port to run on older systems, and was very much celebrated and >>> endorsed. However, as a result of this PR, the Rust port became a lot more >>> complicated, and also introduced a new critical bootstrap compiler >>> (referenced in the Rust portgroup here: >>> https://github.com/macports/macports-ports/blob/2d39b30a32fcf0f5e1cff04f172e9d55ae08ba48/_resources/port1.0/group/rust-1.0.tcl#L140 >>> >>> <https://github.com/macports/macports-ports/blob/2d39b30a32fcf0f5e1cff04f172e9d55ae08ba48/_resources/port1.0/group/rust-1.0.tcl#L140>), >>> which is being hosted in MarcusCalhoun-Lopez's personal Github account ( >>> https://github.com/MarcusCalhoun-Lopez/rust/releases >>> <https://github.com/MarcusCalhoun-Lopez/rust/releases> ). Marcus did try >>> to ask about a more official location to host the bootstrap compiler in a >>> macports-dev thread: >>> https://lists.macports.org/pipermail/macports-dev/2022-April/044243.html >>> <https://lists.macports.org/pipermail/macports-dev/2022-April/044243.html> >>> , but ultimately per the responses he decided to just host it in his >>> personal account himself. >>> >>> Since this massive change to the Rust port at 1.60.0, it's only seen one >>> update since then to 1.61.0 ( >>> https://github.com/macports/macports-ports/commit/8431ccb48eec4824736eca51f643523356091cd6 >>> >>> <https://github.com/macports/macports-ports/commit/8431ccb48eec4824736eca51f643523356091cd6> >>> ) >>> >>> David Gilman opened a PR recently attempting to update Rust to 1.64.0 ( >>> https://github.com/macports/macports-ports/pull/16329 >>> <https://github.com/macports/macports-ports/pull/16329> ), but Gilman >>> doesn't have access to update the bootstrap compiler, because as of right >>> now, only MarcusCalhoun-Lopez knows how to build it, and also it's hosted >>> in Calhoun's Github account as mentioned prior. >>> >>> We need to figure out a more sustainable approach for this bootstrap >>> compiler, including how it can be built, and hosting it somewhere where a >>> small set of MacPorts maintainers can build and update it so that we can >>> get MacPorts Rust back on track. As things are today, only >>> MarcusCalhoun-Lopez has all the pieces required to update this port, and >>> there's been no word from him for months now as the Rust port has fallen >>> further and further behind. Being such a critical core language port, it >>> may make sense to create a repo within the MacPorts Github organization >>> where a set of maintainers can host and update the Rust bootstrap compiler. >> >
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