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Re: Scala package
From: |
Leo Prikler |
Subject: |
Re: Scala package |
Date: |
Tue, 18 May 2021 13:36:43 +0200 |
User-agent: |
Evolution 3.34.2 |
Am Dienstag, den 18.05.2021, 07:15 -0400 schrieb Julien Lepiller:
> The old scala is written in a superset of java5, that requires PiCo
> to build, and PiCo was built with JaCo. They were developped at EPFL,
> and you can find a binary for it, but no source:
> http://zenger.org/jaco/
>
> Apparently, JaCo was later reimplemented in Keris, whose source code
> is available. However, KeCo (the Keris compiler) is written in Keris.
>
> It is not even clear that building an old version of scala is going
> to work, as the language evolved a lot since then.
>
> I think the best way to bootstrap would be to reimplement Scala in
> another language. I tried that too, but even the parser is crazy.
Thanks Julien and Ricardo for the detailed explanation of what goes
wrong here.
Would a bootstrap chain from 2.0.x work at least, so that the crazy
Scala parser can target a specific (early) version and we get a
slightly smaller binary or are the gains from that too minimal? This
is also a concern going forward, can we always hope to "bootstrap" the
next Scala version with the one currently packaged in Guix?
> Le 18 mai 2021 05:44:42 GMT-04:00, Ricardo Wurmus <rekado@elephly.net
> > a écrit :
> > Leo Prikler <leo.prikler@student.tugraz.at> writes:
> >
> > > Hi Julien,
> > >
> > > Am Dienstag, den 18.05.2021, 01:01 +0200 schrieb Julien
> > > Lepiller:
> > > > Hi Guix!
> > > >
> > > > I have the attached file that build Scala, although it's not
> > > > bootstrapped at all. It contains %binary-scala, a few
> > > > dependencies of
> > > > Scala we haven't packaged yet, and the final scala, built from
> > > > %binary-scala, without sbt (which requires Scala too).
> > > >
> > > > Since I've tried and failed to bootstrap Scala for so long, I
> > > > think
> > > > it's time to give up. I can't always create miracles.
> > >
> > > Some points relevant to bootstrapping:
> > > - The last version, that ships "scalai" written in Java seems
> > > to
> > > be
> > > v1.4.0+4. Perhaps one can use scalai to bootstrap scalac
> > > within it.
> > > - The last version, that does not "require" sbt is 2.11.x,
> > > though with your workaround we can also build later versions.
> >
> > We tried building a clean bootstrap chain for Scala for years.
> > Back then I went down the rabbit hole and found that early scalac
> > is written in Pizza; but it turned out that Pizza is written in
> > Pizza and is released under the old Artistic License, which is
> > considered non-free.
> >
> > https://logs.guix.gnu.org/guix/2018-04-08.log#230002
> > https://logs.guix.gnu.org/guix/2018-04-09.log#073740
> >
> > I pointed a branch at an old Scala commit that contains the old
> > Socos compiler source, which ostensibly are written in Java, but
> > actually are not:
> >
> > https://github.com/rekado/scala-bootstrap/tree/bootstrap
> >
> > This is at around version 1.4.0.4, as you wrote above.
> >
> > Since the old days Scala Native has grown considerably, and
> > perhaps we can reuse some of its native libraries. I’m not too
> > hopeful, because the bulk of it is still written in Scala,
> > obviously, but there are parts that are written in C / C++, which
> > might come in handy.
> >
> > https://github.com/scala-native/scala-native
- Scala package, Julien Lepiller, 2021/05/17
- Re: Scala package, Leo Prikler, 2021/05/18
- Re: Scala package, Ludovic Courtès, 2021/05/18
- Re: Scala package, Katherine Cox-Buday, 2021/05/19
- Re: Scala package, Shyam Saran, 2021/05/20
- Re: Scala package, Julien Lepiller, 2021/05/20
- Re: Scala package, Shyam Saran, 2021/05/22
- Re: Scala package, Daniel Trujillo Viedma, 2021/05/18